全國熱線：17621202883 24H在線
Q235B特種鋼板-碳素鋼/模具鋼系列
專業(yè)為您提供碳素鋼/模具鋼系列牌號，材質(zhì)單，在線報價單 歡迎選購
Q235B_百度百科 .rc-dialog{margin:10px;position:relative;width:auto}.rc-dialog-wrap{-webkit-overflow-scrolling:touch;bottom:0;left:0;outline:0;overflow:auto;position:fixed;right:0;top:0;z-index:1050}.rc-dialog-title{font-size:14px;font-weight:700;line-height:21px;margin:0}.rc-dialog-content{background-clip:padding-box;background-color:#fff;border:none;border-radius:6px 6px;position:relative}.rc-dialog-close{background:transparent;border:0;color:#000;cursor:pointer;filter:alpha(opacity=20);font-size:21px;font-weight:700;line-height:1;opacity:.2;position:absolute;right:20px;-webkit-text-decoration:none;text-decoration:none;text-shadow:0 1px 0 #fff;top:12px}.rc-dialog-close-x:after{content:"×"}.rc-dialog-close:hover{filter:alpha(opacity=100);opacity:1;-webkit-text-decoration:none;text-decoration:none}.rc-dialog-header{background:#fff;border-bottom:1px solid #e9e9e9;border-radius:5px 5px 0 0;color:#666;padding:13px 20px 14px}.rc-dialog-body{padding:20px}.rc-dialog-footer{border-radius:0 0 5px 5px;border-top:1px solid #e9e9e9;padding:10px 20px;text-align:right}.rc-dialog-zoom-appear,.rc-dialog-zoom-enter{animation-duration:.3s;animation-fill-mode:both;animation-play-state:paused;animation-timing-function:cubic-bezier(.08,.82,.17,1);opacity:0}.rc-dialog-zoom-leave{animation-duration:.3s;animation-fill-mode:both;animation-play-state:paused;animation-timing-function:cubic-bezier(.6,.04,.98,.34)}.rc-dialog-zoom-appear.rc-dialog-zoom-appear-active,.rc-dialog-zoom-enter.rc-dialog-zoom-enter-active{animation-name:rcDialogZoomIn;animation-play-state:running}.rc-dialog-zoom-leave.rc-dialog-zoom-leave-active{animation-name:rcDialogZoomOut;animation-play-state:running}@keyframes rcDialogZoomIn{0%{opacity:0;transform:scale(0)}to{opacity:1;transform:scale(1)}}@keyframes rcDialogZoomOut{0%{transform:scale(1)}to{opacity:0;transform:scale(0)}}@media (min-width:768px){.rc-dialog{margin:30px auto;width:600px}}.rc-dialog-mask{background-color:#373737;background-color:rgba(55,55,55,.6);bottom:0;filter:alpha(opacity=50);height:100%;left:0;position:fixed;right:0;top:0;z-index:1050}.rc-dialog-mask-hidden{display:none}.rc-dialog-fade-appear,.rc-dialog-fade-enter{opacity:0}.rc-dialog-fade-appear,.rc-dialog-fade-enter,.rc-dialog-fade-leave{animation-duration:.3s;animation-fill-mode:both;animation-play-state:paused;animation-timing-function:cubic-bezier(.55,0,.55,.2)}.rc-dialog-fade-appear.rc-dialog-fade-appear-active,.rc-dialog-fade-enter.rc-dialog-fade-enter-active{animation-name:rcDialogFadeIn;animation-play-state:running}.rc-dialog-fade-leave.rc-dialog-fade-leave-active{animation-name:rcDialogFadeOut;animation-play-state:running}@keyframes rcDialogFadeIn{0%{opacity:0}to{opacity:1}}@keyframes rcDialogFadeOut{0%{opacity:1}to{opacity:0}}.bk-dialog{left:50%;margin:0!important;position:absolute!important;top:50%;transform:translate(-50%,-50%)}.bk-dialog .rc-dialog-content{background:#fff;border:1px solid #bbb;border-radius:0}.bk-dialog .rc-dialog-header{background:#fafbfc;border-bottom:1px solid #e5e5e5;padding:10px 20px 9px}.bk-dialog .rc-dialog-title{color:#666;font-size:16px;font-weight:400}.bk-dialog .rc-dialog-close{color:#cbcbcb;font-size:18px;opacity:1}.bk-dialog .rc-dialog-body{padding:26px 50px 35px;text-align:center}.bk-dialog .dialog-title{color:#333;font-size:20px;font-weight:700;line-height:26px;margin-bottom:20px}.bk-dialog .dialog-content{color:#ccc;font-size:16px;line-height:26px}.bk-dialog .dialog-content .alert-content{align-items:center;display:flex;justify-content:center;padding-top:44px;width:378px}.bk-dialog .dialog-content .alert-content.no-icon .msg{max-width:378px}.bk-dialog .dialog-content .alert-content.no-sub-msg .msg h1{line-height:58px}.bk-dialog .dialog-content .alert-content .msg{flex:none;max-width:302px;text-align:center}.bk-dialog .dialog-content .alert-content .msg h1{color:#333;font-size:20px;line-height:32px;text-align:left}.bk-dialog .dialog-content .alert-content .msg pre{color:#888;font-family:arial,tahoma,Microsoft Yahei,"\5b8b\4f53",sans-serif,font-extend;font-size:14px;line-height:22px;text-align:left}.bk-dialog .dialog-content .alert-content .msg .ext-info{color:#888;font-size:12px;margin-top:14px;text-align:left}.bk-dialog .dialog-content .alert-content .msg .ext-info i{color:#52a3f5}.bk-dialog .dialog-content .alert-content .alert-icon{align-items:center;border:2px solid #b4d6f9;border-radius:56px;color:#52a3f5;display:flex;flex:none;height:56px;justify-content:center;margin-right:12px;width:56px}.bk-dialog .dialog-content .alert-content .alert-icon.error-icon{border-color:#fbddd6;color:#f18167}.bk-dialog .dialog-content .alert-content .alert-icon .icon{font-size:30px;line-height:0}.bk-dialog .btn-list{margin-top:35px}.bk-dialog .btn-list .btn-item{background:#52a3f5;border:1px solid #52a3f5;border-radius:3px;box-shadow:0 1px 0 rgba(0,0,0,.05);color:#fff;cursor:pointer;display:inline-block;font-size:16px;line-height:1;margin-right:10px;padding:8px 24px;text-align:center}.bk-dialog .btn-list .btn-item:last-child{margin-right:0}.popup-content{background:#fff;border:1px solid #d7d7d7;margin:auto;padding:5px;width:50%}[role=tooltip].popup-content{border-radius:5px;box-shadow:0 0 3px rgba(0,0,0,.16);width:200px}.popup-overlay{background:rgba(0,0,0,.5)}[data-popup=tooltip].popup-overlay{background:transparent}.popup-arrow{stroke-width:2px;stroke:#d7d7d7;stroke-dasharray:30px;stroke-dashoffset:-54px;bottom:0;color:#fff;filter:drop-shadow(0 -3px 3px rgba(0,0,0,.16));left:0;right:0;top:0}.bubble-box{background:#fff;border:1px solid #dfdfdf;border-radius:3px;box-shadow:0 4px 6px -4px rgba(0,0,0,.2);z-index:2000}.bubble-box,.bubble-box .bubble-arrow-place{position:absolute}.bubble-box .bubble-arrow{background:#fff;border:1px solid #dfdfdf;box-shadow:0 4px 6px -4px rgba(0,0,0,.2);height:10px;overflow:hidden;position:absolute;transform:rotate(45deg);width:10px;z-index:1}.bubble-box.top-left{bottom:100%;left:0;margin-bottom:6px}.bubble-box.top-left .bubble-arrow-place{bottom:-8px;height:8px;left:0;width:100%}.bubble-box.top-left .bubble-arrow{left:3px;margin-top:-6px;top:100%}.bubble-box.top-right{bottom:100%;margin-bottom:6px;right:0}.bubble-box.top-right .bubble-arrow-place{bottom:-8px;height:8px;left:0;width:100%}.bubble-box.top-right .bubble-arrow{margin-top:-6px;right:3px;top:100%}.bubble-box.top-center{bottom:100%;left:50%;margin-bottom:6px;transform:translateX(-50%)}.bubble-box.top-center .bubble-arrow-place{bottom:-8px;height:8px;left:0;width:100%}.bubble-box.top-center .bubble-arrow{left:50%;margin-left:-6px;margin-top:-6px;top:100%}.bubble-box.bottom-left{left:0;margin-top:6px;top:100%}.bubble-box.bottom-left .bubble-arrow-place{height:8px;left:0;top:-8px;width:100%}.bubble-box.bottom-left .bubble-arrow{bottom:100%;left:3px;margin-bottom:-6px}.bubble-box.bottom-right{margin-top:6px;right:0;top:100%}.bubble-box.bottom-right .bubble-arrow-place{height:8px;left:0;top:-8px;width:100%}.bubble-box.bottom-right .bubble-arrow{bottom:100%;margin-bottom:-6px;right:3px}.bubble-box.bottom-center{left:50%;margin-top:6px;top:100%;transform:translateX(-50%)}.bubble-box.bottom-center .bubble-arrow-place{height:8px;left:0;top:-8px;width:100%}.bubble-box.bottom-center .bubble-arrow{bottom:100%;left:50%;margin-bottom:-6px;margin-left:-6px}.bubble-box.left-top{margin-right:8px;right:100%;top:0}.bubble-box.left-top .bubble-arrow-place{height:100%;right:-8px;top:0;width:8px}.bubble-box.left-top .bubble-arrow{left:100%;margin-left:-6px;top:3px}.bubble-box.left-bottom{bottom:0;margin-right:8px;right:100%}.bubble-box.left-bottom .bubble-arrow-place{height:100%;right:-8px;top:0;width:8px}.bubble-box.left-bottom .bubble-arrow{bottom:3px;left:100%;margin-left:-6px}.bubble-box.left-center{margin-right:8px;right:100%;top:50%;transform:translateY(-50%)}.bubble-box.left-center .bubble-arrow-place{height:100%;right:-8px;top:0;width:8px}.bubble-box.left-center .bubble-arrow{left:100%;margin-left:-6px;margin-top:-6px;top:50%}.bubble-box.right-top{left:100%;margin-left:8px;top:0}.bubble-box.right-top .bubble-arrow-place{height:100%;left:-8px;top:0;width:8px}.bubble-box.right-top .bubble-arrow{margin-right:-6px;right:100%;top:3px}.bubble-box.right-bottom{bottom:0;left:100%;margin-left:8px}.bubble-box.right-bottom .bubble-arrow-place{height:100%;left:-8px;top:0;width:8px}.bubble-box.right-bottom .bubble-arrow{bottom:3px;margin-right:-6px;right:100%}.bubble-box.right-center{left:100%;margin-left:8px;top:50%;transform:translateY(-50%)}.bubble-box.right-center .bubble-arrow-place{height:100%;left:-8px;top:0;width:8px}.bubble-box.right-center .bubble-arrow{margin-right:-6px;margin-top:-6px;right:100%;top:50%}.bubble-box .bubble-content{background:#fff;border-radius:3px;overflow:hidden;position:relative;z-index:2}.user-bar{color:#333;display:flex;font-size:13px}.user-bar.dark-theme,.user-bar.dark-theme .user-bar-item .menu-item a,.user-bar.dark-theme .user-bar-item>a{color:#fff}.user-bar .user-bar-item{flex:none;padding:0 11px;position:relative}.user-bar .user-bar-item>a{color:#333;cursor:pointer;-webkit-text-decoration:none;text-decoration:none}.user-bar .user-bar-item>a:hover{-webkit-text-decoration:underline;text-decoration:underline}.user-bar .user-bar-item>a svg{fill:#c1c1c1;font-size:14px;margin:0 5px 0 3px;vertical-align:-2px}.user-bar .user-bar-item.message{margin-left:11px;margin-right:11px}.user-bar .user-bar-item .menu-item{font-size:12px;white-space:nowrap}.user-bar .user-bar-item .menu-item a{color:#333;cursor:pointer;display:block;height:24px;line-height:24px;padding:0 11px}.user-bar .user-bar-item .menu-item a:hover{background:#38f;color:#fff}.user-bar .user-bar-item .menu-item a:hover .msg-num{color:#fff}.user-bar .user-bar-item .menu-item .msg-num{color:#338de6;font-weight:700;margin-left:3px}.user-bar .user-bar-item .lemma-msg-bubble{background:#ffffda;border-radius:3px;font-size:12px;padding:10px 5px;position:relative;width:260px}.user-bar .user-bar-item .lemma-msg-bubble .lemma-msg-item a{color:#2b66b4;height:24px;line-height:24px;outline:0;padding:0 10px;-webkit-text-decoration:none;text-decoration:none}.user-bar .user-bar-item .lemma-msg-bubble .cancel-alarm{margin-top:10px}.user-bar .user-bar-item .lemma-msg-bubble .close-icon{color:#b0b0b0;cursor:pointer;font-size:12px;position:absolute;right:6px;top:6px}.user-bar.user-login .user-bar-item:last-child{margin-right:9px}.user-bar .triangle-down{border:4px solid transparent;border-top-color:#8b8c8c;position:absolute;right:0;top:7px}.clearfix{*zoom:1}.clearfix:after,.clearfix:before{content:" ";display:table}.clearfix:after{clear:both}.ellipsis{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.z-index-content{z-index:1}.z-index-fixed-content{z-index:100}.z-index-modal-mask{z-index:1000}.z-index-modal-content{z-index:1100}.z-index-popup{z-index:2000}.z-index-toast{z-index:3000}.gray{filter:grayscale(100%);-moz-filter:grayscale(100%);-ms-filter:grayscale(100%);-o-filter:grayscale(100%);filter:progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);-webkit-filter:grayscale(1)}.lemmaSearchBarWrapper{margin:0 auto;position:relative;width:1139px}.lemmaSearchBar{box-sizing:border-box;height:104px;margin:auto;padding-top:25px;width:808px}@media screen and (min-width:1441px){.lemmaSearchBar{width:903px}}.fixedWrapper{background-color:#fff;border-bottom:1px solid #ebebeb;box-shadow:0 0 5px #888;height:66px;left:0;margin:auto;min-width:1140px;opacity:0;position:fixed;top:0;transition:opacity .3s;width:100%;z-index:100}.fixedWrapper,.fixedWrapper *{box-sizing:border-box}.fixedWrapper .fixedBg{height:66px;margin:auto;padding-top:12px;width:1140px}.fixedWrapper.fadeIn{opacity:1}.fixedWrapper.fadeOut{opacity:0}.fixedWrapper.show{z-index:100}.fixedWrapper.hide{z-index:-10}.searchBar{height:47px;margin:auto}.searchBar,.searchBar *{box-sizing:border-box}.searchBar .logoWrapper{display:inline-block;float:left;height:100%;width:154px}.searchBar .logoWrapper .logo{cursor:pointer;height:44px}.searchBar .rightWrapper{display:inline-block;float:left;height:100%;padding-top:7px;position:relative}.searchBar .rightWrapper .inputWrapper{display:inline-block;float:left;height:40px;position:relative}.searchBar .rightWrapper .inputWrapper .placeholder{color:#999;font-size:14px;font-weight:400;left:0;opacity:0;overflow:hidden;padding-left:10px;pointer-events:none;position:absolute;text-overflow:ellipsis;top:50%;transform:translateY(-50%);transition:.5s ease-out;transition-property:opacity;white-space:nowrap;width:calc(100% - 10px);z-index:1000}.searchBar .rightWrapper .inputWrapper .placeholder.showIn{opacity:1;transition:.5s ease-in}.searchBar .rightWrapper .inputWrapper .searchInput{border:1px solid #ccc;border-right:0;display:inline-block;font-size:16px;height:40px;line-height:28px;padding:6px 36px 4px 8px;-webkit-user-select:text;width:440px}.searchBar .rightWrapper .inputWrapper .searchInput::-webkit-input-placeholder{animation:zoomIn 1s ease-in-out;color:#999;font-size:14px;font-weight:400;opacity:var(--placeholder-color);overflow:hidden;text-overflow:ellipsis;-webkit-transition-property:opacity;transition-property:opacity;-webkit-transition:2s ease-out;transition:2s ease-out;white-space:nowrap}.searchBar .rightWrapper .inputWrapper .searchInput:hover{border-color:#999}.searchBar .rightWrapper .inputWrapper .searchInput:focus{border-color:#4791ff}@media screen and (min-width:1441px){.searchBar .rightWrapper .inputWrapper .searchInput{width:535px}}.searchBar .rightWrapper .inputWrapper .closeIcon{color:#9195a3;cursor:pointer;display:grid;font-size:16px;position:absolute;right:10px;top:50%;transform:translateY(-50%)}.searchBar .rightWrapper .resultWrapper{background:#fff;box-shadow:none;box-sizing:content-box;left:0;position:absolute;top:39px;width:100%;z-index:100}.searchBar .rightWrapper .lemmaBtn{-webkit-appearance:none;background:#38f;border:1px solid;border-color:#38f #38f #2d78f4;border-radius:0;color:#fff;cursor:pointer;display:inline-block;float:left;font-family:arial;font-size:16px;height:40px;letter-spacing:1px;outline:medium;width:104px}.searchBar .rightWrapper .lemmaBtn:hover{background:#317ef3;border-color:#317ef3}.searchBar .rightWrapper .siteBtn{-webkit-appearance:none;background-color:#fff;border:1px solid #2e82ff;border-radius:0;color:#38f;cursor:pointer;display:inline-block;float:left;font-family:arial;font-size:16px;height:40px;letter-spacing:1px;margin-left:4px;outline:medium;width:104px}.searchBar .rightWrapper .helpBtn{color:#333;display:inline-block;float:right;font-size:13px;margin-left:14px;margin-top:17px;position:absolute;-webkit-text-decoration:underline;text-decoration:underline;width:26px}.searchBar.top-search{height:38px}.searchBar.top-search .logoWrapper{margin-right:10px;width:100px}.searchBar.top-search .logoWrapper .logo{height:33px}.searchBar.top-search .rightWrapper{padding-top:4px}.searchBar.top-search .rightWrapper .inputWrapper{height:34px}.searchBar.top-search .rightWrapper .inputWrapper .searchInput{font-size:16px;height:34px;line-height:22px;padding:6px 36px 4px 8px;width:400px}.searchBar.top-search .rightWrapper .inputWrapper .resultWrapper{background:#fff;box-shadow:none;position:absolute;top:33px;width:100%;z-index:100}.searchBar.top-search .rightWrapper .lemmaBtn{font-size:14px;height:34px;width:100px}.searchBar.top-search .rightWrapper .helpBtn,.searchBar.top-search .rightWrapper .siteBtn{display:none}.searchBar .splitLine{background-color:#f5f5f5;height:1px;margin:13px 16px 16px;padding:0 8px}.searchBar .hotBox{border:1px solid #ccc;border-top:none;cursor:default;font-size:14px;font-weight:400;line-height:22px;padding:0 15px 16px}.searchBar .hotBox .hotList{display:flex}.searchBar .hotBox .hotList>div{width:calc(50% - 10px)}.searchBar .hotBox .hotList .hotLeftList{margin:7px 10px 0 0}.searchBar .hotBox .hotList .hotRightList{margin-top:7px}.searchBar .hotBox .hotList .hotItem{border:1px solid transparent;border-radius:6px;cursor:pointer;display:flex;margin-top:5px;overflow:hidden;padding:4px 7px}.searchBar .hotBox .hotList .hotItem:hover{border-color:#e0e0e0}.searchBar .hotBox .hotList .hotItem:hover .hotDesc,.searchBar .hotBox .hotList .hotItem:hover .hotTitle{color:#38e!important}.searchBar .hotBox .hotList .hotItem .hotIdx,.searchBar .hotBox .hotList .hotItem img{background:#f5f5f6;border-radius:4px;color:#5b5d66;flex:none;font-size:11px;font-weight:600;line-height:16px;margin-right:4px;position:relative;text-align:center;top:1px}.searchBar .hotBox .hotList .hotItem .hotIdx{height:16px;width:16px}.searchBar .hotBox .hotList .hotItem .hotContent{line-height:1;overflow:hidden}.searchBar .hotBox .hotList .hotItem .hotContent .hotTitle{color:#222;font-size:14px;font-weight:500;line-height:20px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;word-break:keep-all}.searchBar .hotBox .hotList .hotItem .hotContent .hotDesc{color:#666;font-size:12px;line-height:1.5;margin-top:1.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;word-break:keep-all}.searchBar .historyBox{border:1px solid #ccc;cursor:default;font-size:14px;font-weight:400;line-height:22px;padding:16px 15px 24px}.searchBar .historyBox .historyTitle img{display:inline-block}.searchBar .historyBox .historyTitle .delAllBtn{color:#9195a3;cursor:pointer;float:right;font-size:12px;font-weight:400;line-height:1}.searchBar .historyBox .historyList{cursor:default;font-size:14px;font-weight:400;line-height:0;margin-top:2px}.searchBar .historyBox .historyList .historyItem{background:#f5f5f6;border:1px solid #f5f5f6;border-radius:6px;box-sizing:border-box;cursor:pointer;display:inline-block;line-height:20px;margin-right:10px;margin-top:10px;max-width:calc(50% - 10px);padding:4px 7px;position:relative}.searchBar .historyBox .historyList .historyItem.active{background:0 0;border-color:#e0e0e0;color:#38f}.searchBar .historyBox .historyList .historyItem .historyContent{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;word-break:keep-all}.searchBar .historyBox .historyList .historyItem .delItemBtn{background:#ccc;border-radius:50%;box-sizing:content-box;font-size:12px;font-weight:bolder;height:12px;line-height:14px;padding:1px 0;position:absolute;right:-6px;text-align:center;top:-6px;width:14px}.searchBar .historyBox .historyList .historyItem .delItemBtn svg{color:#fff;transform:scale(.66667)}.searchBar .sugWrapper{border:1px solid #ccc}.searchBar .resultBox{height:auto;margin:8px 0;padding:0}.searchBar .resultBox .resultItem{align-items:center;color:#222;cursor:pointer;display:flex;overflow:hidden;padding:8px 16px}.searchBar .resultBox .resultItem.active{background:#f9f9f9;color:#38f}.searchBar .resultBox .resultItem .resultPic{flex:none;margin-right:8px}.searchBar .resultBox .resultItem .resultPic img{border:1px solid #f5f5f5;border-radius:6px}.searchBar .resultBox .resultItem .resultContent{font-size:14px;line-height:20px;overflow:hidden}.searchBar .resultBox .resultItem .resultContent .resultDesc,.searchBar .resultBox .resultItem .resultContent .resultTitle{margin-bottom:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.searchBar .resultBox .resultItem .resultContent .resultDesc{line-height:1.5}.searchBar .resultBox .resultFooter{color:#999;cursor:pointer;font-size:12px;line-height:1.5;margin:5px 16px}.searchBar .resultBox .resultFooter span{color:#38f}.searchBar .resultBox .resultFooter svg{vertical-align:-1px}.searchBar .sugListWrapper{color:#222;line-height:30px;padding:0 0 16px}.searchBar .sugListWrapper .sugList{list-style:none}.searchBar .sugListWrapper .sugList svg{color:#9195a3;font-size:18px;margin-right:2px;vertical-align:6px}.searchBar .sugListWrapper .sugList li:first-child{color:#222;cursor:default;font-size:14px;font-weight:500;line-height:1;margin:16px 16px 6px}.searchBar .sugListWrapper .sugList li:first-child svg{vertical-align:-4px}.searchBar .sugListWrapper .sugList li:not(:first-child){color:#222;cursor:pointer;font-size:14px;height:30px;line-height:30px;list-style:none;padding:0 16px}.searchBar .sugListWrapper .sugList li .sugListItem{word-wrap:normal;display:inline-block;max-width:80%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.searchBar .sugListWrapper .sugList li.active{background:#f9f9f9;color:#38f}.searchBar .sugListWrapper .sugFooter{background-color:#fafafa;color:#666;font-size:12px;font-weight:400;height:26px;line-height:26px;padding:0 10px;text-align:right}.searchBar .sugListWrapper .sugFooter .sugFooterClose{cursor:pointer;display:inline;-webkit-text-decoration:underline;text-decoration:underline}.index-module_topbar__aBAV7{border-bottom:1px solid #ebebeb;display:flex;height:32px;justify-content:flex-end;position:relative;z-index:6}.index-module_topbar__aBAV7 .index-module_websiteList__WqwA2{border-bottom:1px solid #f1f1f1}.index-module_topbar__aBAV7 .index-module_separator__gx7UX{border-right:1px solid #ebebeb;height:12px;margin:10px 13px 10px 25px}.index-module_topbar__aBAV7 .index-module_userBarBox__nGfXC{margin-top:6px}.container{font-size:0;height:32px;line-height:32px}.container .tabItem{color:#333;display:inline-block;font-size:13px;font-weight:700;outline:0;text-align:center;-webkit-text-decoration:underline;text-decoration:underline;width:54px}.container .baike{color:#666;-webkit-text-decoration:none;text-decoration:none}.index-module_navBarWrapper__X0DND{background:#459df5;height:45px;overflow:hidden;position:relative;z-index:5}.index-module_navBarWrapper__X0DND a{-webkit-text-decoration:none;text-decoration:none}.index-module_navBarWrapper__X0DND.index-module_hover__Gsl-V{overflow:visible}.index-module_navBarWrapper__X0DND.index-module_hover__Gsl-V .index-module_navBarBg__jLfYB{background:rgba(36,97,158,.95)}.index-module_navBarWrapper__X0DND.index-module_hover__Gsl-V dd{opacity:1}.index-module_navBarWrapper__X0DND .index-module_navBar__fLItn{background:#459df5;height:45px;min-width:900px;position:relative;z-index:2}.index-module_navBarWrapper__X0DND .index-module_navBarBg__jLfYB{height:276px;left:0;position:absolute;top:0;transition:.3s;width:100%;z-index:1}.index-module_navBarWrapper__X0DND .index-module_navBarList__iL2jR{background:#459df5;border-bottom:1px solid #3b92e9;border-top:1px solid #5895d5;display:flex;height:43px;margin:0 auto;position:relative;width:1140px}.index-module_navBarWrapper__X0DND dl{position:relative}.index-module_navBarWrapper__X0DND dl.index-module_cooperation__ZISm7,.index-module_navBarWrapper__X0DND dl.index-module_guidance__XWoyq,.index-module_navBarWrapper__X0DND dl.index-module_second-know__o9jR2,.index-module_navBarWrapper__X0DND dl.index-module_special__j8K7K,.index-module_navBarWrapper__X0DND dl.index-module_team__Heqwh{width:126px}.index-module_navBarWrapper__X0DND dl.index-module_cooperation__ZISm7 dt,.index-module_navBarWrapper__X0DND dl.index-module_guidance__XWoyq dt,.index-module_navBarWrapper__X0DND dl.index-module_second-know__o9jR2 dt,.index-module_navBarWrapper__X0DND dl.index-module_special__j8K7K dt,.index-module_navBarWrapper__X0DND dl.index-module_team__Heqwh dt{width:124px}.index-module_navBarWrapper__X0DND dl.index-module_cooperation__ZISm7 dd,.index-module_navBarWrapper__X0DND dl.index-module_guidance__XWoyq dd,.index-module_navBarWrapper__X0DND dl.index-module_second-know__o9jR2 dd,.index-module_navBarWrapper__X0DND dl.index-module_special__j8K7K dd,.index-module_navBarWrapper__X0DND dl.index-module_team__Heqwh dd{width:125px}.index-module_navBarWrapper__X0DND dl.index-module_index__Kc2gf,.index-module_navBarWrapper__X0DND dl.index-module_user__Kc93c{width:94px}.index-module_navBarWrapper__X0DND dl.index-module_index__Kc2gf dt,.index-module_navBarWrapper__X0DND dl.index-module_user__Kc93c dt{width:92px}.index-module_navBarWrapper__X0DND dl.index-module_index__Kc2gf dd,.index-module_navBarWrapper__X0DND dl.index-module_user__Kc93c dd{width:93px}.index-module_navBarWrapper__X0DND dl.index-module_knowledge__9fisv dd,.index-module_navBarWrapper__X0DND dl.index-module_knowledge__9fisv dt{width:140px}.index-module_navBarWrapper__X0DND dl:hover dt{background:#338ce6}.index-module_navBarWrapper__X0DND dl:hover dd{background:#19508b;border-color:#184f8b}.index-module_navBarWrapper__X0DND dl:hover+dl dd{border-color:transparent!important;border-color:#184f8b}.index-module_navBarWrapper__X0DND dt{border-left:1px solid transparent!important;border-right:1px solid transparent!important;border:1px solid #59a1e9;border-bottom:0;border-top:0;color:#f5f5f5;cursor:pointer;font-size:16px;height:44px;line-height:44px;text-align:center;transition:background .3s}.index-module_navBarWrapper__X0DND dt a{color:#f5f5f5}.index-module_navBarWrapper__X0DND dt a.index-module_selected__6G8lk{border-bottom:2px solid #fff}.index-module_navBarWrapper__X0DND dd{border-left:1px solid #3a6fa2;height:210px;opacity:0;padding:11px 0 10px;transition:.3s}.index-module_navBarWrapper__X0DND dd .index-module_navBarItem__m7wZ4{font-size:14px;height:30px;line-height:30px;text-align:center}.index-module_navBarWrapper__X0DND dd .index-module_navBarItem__m7wZ4 a{color:#a2c9f0;padding-bottom:3px}.index-module_navBarWrapper__X0DND dd .index-module_navBarItem__m7wZ4 a:hover{border-bottom:2px solid #fff;color:#fff}.index-module_navBarWrapper__X0DND .index-module_rightList__RchPZ{align-items:center;display:flex;font-size:16px;height:24px;line-height:24px;margin:10px 0;position:absolute;right:0}.index-module_navBarWrapper__X0DND .index-module_rightList__RchPZ .index-module_appDownload__Bx1Uj,.index-module_navBarWrapper__X0DND .index-module_rightList__RchPZ .index-module_usercenter__brbF2{font-size:16px;height:16px;line-height:1;padding:0 15px}.index-module_navBarWrapper__X0DND .index-module_rightList__RchPZ .index-module_appDownload__Bx1Uj a,.index-module_navBarWrapper__X0DND .index-module_rightList__RchPZ .index-module_usercenter__brbF2 a{color:#fff}.index-module_navBarWrapper__X0DND .index-module_rightList__RchPZ .index-module_appDownload__Bx1Uj path,.index-module_navBarWrapper__X0DND .index-module_rightList__RchPZ .index-module_appDownload__Bx1Uj svg,.index-module_navBarWrapper__X0DND .index-module_rightList__RchPZ .index-module_usercenter__brbF2 path,.index-module_navBarWrapper__X0DND .index-module_rightList__RchPZ .index-module_usercenter__brbF2 svg{fill:#fff}.index-module_navBarWrapper__X0DND .index-module_rightList__RchPZ .index-module_appDownload__Bx1Uj svg{animation:index-module_phone__w9Py1 2s;-webkit-animation:index-module_phone__w9Py1 2s infinite;font-size:18px;margin-right:3px;transform:rotate(0);transform-origin:center;vertical-align:-3px}.index-module_navBarWrapper__X0DND .index-module_rightList__RchPZ .index-module_usercenter__brbF2 svg{font-size:14px;margin-right:6px;vertical-align:-1px}.index-module_navBarWrapper__X0DND.index-module_red__45nyJ{background:#9e1814}.index-module_navBarWrapper__X0DND.index-module_red__45nyJ.index-module_hover__Gsl-V .index-module_navBarBg__jLfYB{background:rgba(124,25,22,.95)}.index-module_navBarWrapper__X0DND.index-module_red__45nyJ .index-module_navBar__fLItn{background:#9e1814}.index-module_navBarWrapper__X0DND.index-module_red__45nyJ .index-module_navBarList__iL2jR{background:#9e1814;border-bottom:1px solid #9e1814;border-top:1px solid #9e1814}.index-module_navBarWrapper__X0DND.index-module_red__45nyJ dl:hover dt{background:#8a1f1b}.index-module_navBarWrapper__X0DND.index-module_red__45nyJ dl:hover dd{background:#6d100c;border-color:#6d100c}.index-module_navBarWrapper__X0DND.index-module_red__45nyJ dl:hover+dl dd{border-color:#8a1f1b}.index-module_navBarWrapper__X0DND.index-module_red__45nyJ dt{border:none;color:#f5f5f5}.index-module_navBarWrapper__X0DND.index-module_red__45nyJ dt a{color:#f5f5f5}.index-module_navBarWrapper__X0DND.index-module_red__45nyJ dt a.index-module_selected__6G8lk{border-bottom:2px solid #fff}.index-module_navBarWrapper__X0DND.index-module_red__45nyJ dd{border-left:1px solid #8a1f1b}.index-module_navBarWrapper__X0DND.index-module_red__45nyJ dd .index-module_navBarItem__m7wZ4 a{color:#c29391}.index-module_navBarWrapper__X0DND.index-module_red__45nyJ dd .index-module_navBarItem__m7wZ4 a:hover{border-bottom:2px solid #fff;color:#fff}.index-module_navBarWrapper__X0DND.index-module_red__45nyJ .index-module_rightList__RchPZ .index-module_usercenter__brbF2{border-left:1px solid #8a1f1b}@keyframes index-module_phone__w9Py1{0%{transform:rotate(0)}10%{transform:rotate(-15deg)}20%{transform:rotate(15deg)}30%{transform:rotate(-15deg)}40%{transform:rotate(15deg)}50%{transform:rotate(0)}to{transform:rotate(0)}}.index-module_pageHeader__jSG5w{background:#fff}.copyright{color:#333;font-size:12px;text-align:center}.copyright a{color:#338de6;-webkit-text-decoration:none;text-decoration:none}.copyright .copyright-img{border:0;display:inline-block;vertical-align:text-bottom}.copyright .recordcode{height:16px;line-height:16px;padding-top:6px;text-align:center}.copyright .recordcode .icon-police{background:url(https://bkssl.bdimg.com/static/wiki-common/widget/component/footer/img/icon-police_5f07082.png) 0 0 no-repeat;display:inline-block;height:16px;margin-right:6px;margin-top:-4px;vertical-align:middle;width:14px}.page-footer-content{display:flex;font-size:12px;justify-content:center;width:100%}.page-footer-content:after,.page-footer-content:before{content:" ";display:table}.page-footer-content:after{clear:both}.page-footer-content .block-item{box-sizing:content-box;float:left;width:210px}.page-footer-content .block-item.fresh-block{padding:0 35px 0 5px}.page-footer-content .block-item.question-block{padding:0 35px}.page-footer-content .block-item.suggestion-block{padding:0 5px 20px 35px}.page-footer-content .block-item .block-title{color:#333;font-size:20px;line-height:1.5}.page-footer-content .block-item .block-title svg{color:#aaa;margin-right:10px}.page-footer-content .block-item .block-content{padding:5px 0 0 30px;width:210px}.page-footer-content .block-item .block-content>a{color:#666;cursor:pointer;float:left;margin-bottom:5px;position:relative;-webkit-text-decoration:none;text-decoration:none;width:90px}.page-footer-content .block-item .block-content>a:hover{color:#338de6;-webkit-text-decoration:none;text-decoration:none}.page-footer-content .block-item .block-content .block-content-new-icon{height:7px;left:52px;position:absolute;top:3px}網(wǎng)頁新聞貼吧知道網(wǎng)盤圖片視頻地圖文庫資訊采購百科百度首頁登錄注冊進(jìn)入詞條全站搜索幫助首頁秒懂百科特色百科知識專題加入百科百科團(tuán)隊權(quán)威合作個人中心Q235B播報討論上傳視頻碳素結(jié)構(gòu)鋼收藏查看我的收藏0有用+10由Q+數(shù)字+質(zhì)量等級符號+脫氧方法符號組成。它的鋼號冠以“Q”，代表鋼材的屈服點，后面的數(shù)字表示屈服點數(shù)值，單位是MPa例如Q235表示屈服點（σs）為235 MPa的碳素結(jié)構(gòu)鋼。②必要時鋼號后面可標(biāo)出表示質(zhì)量等級和脫氧方法的符號。質(zhì)量等級符號分別為A、B、C、D。脫氧方法符號：F表示沸騰鋼；b表示半鎮(zhèn)靜鋼；Z表示鎮(zhèn)靜鋼；TZ表示特殊鎮(zhèn)靜鋼，鎮(zhèn)靜鋼可不標(biāo)符號，即Z和TZ都可不標(biāo)。例如Q235-AF表示A級沸騰鋼。中文名碳鋼外文名Q235B應(yīng) 用橋梁鋼、船用鋼碳含量≤0.2%錳含量≤1.4%目錄1碳鋼2優(yōu)質(zhì)碳鋼3碳工具鋼4易切削鋼5合金鋼6低高鋼7彈簧鋼8滾軸鋼9電工純鐵10電工鋼碳鋼播報編輯碳素結(jié)構(gòu)鋼專門用途的碳素鋼，例如橋梁鋼、船用鋼等，基本上采用碳素結(jié)構(gòu)鋼的表示方法，但在鋼號最后附加表示用途的字母。優(yōu)質(zhì)碳鋼播報編輯優(yōu)質(zhì)碳素結(jié)構(gòu)鋼①鋼號開頭的兩位數(shù)字表示鋼的碳含量，以平均碳含量的萬分之幾表示，例如平均碳含量為0.45%的鋼，鋼號為“45”，它不是順序號，所以不能讀成45號鋼。②錳含量較高的優(yōu)質(zhì)碳素結(jié)構(gòu)鋼，應(yīng)將錳元素標(biāo)出，例如50Mn。③沸騰鋼、半鎮(zhèn)靜鋼及專門用途的優(yōu)質(zhì)碳素結(jié)構(gòu)鋼應(yīng)在鋼號最后特別標(biāo)出，例如平均碳含量為0.1%的半鎮(zhèn)靜鋼，其鋼號為10b。④優(yōu)質(zhì)碳素結(jié)構(gòu)鋼是按化學(xué)成分和機(jī)械性能供應(yīng)的。鋼中的硫、磷及非金屬夾雜物的含量較少，表明質(zhì)量，組織結(jié)構(gòu)的均勻性能較好，常用于需要經(jīng)過熱處理的各種較重要的機(jī)械結(jié)構(gòu)零件。⑤根據(jù)化學(xué)成分的不同，優(yōu)質(zhì)碳素結(jié)構(gòu)鋼又分為普通含錳量鋼和較高含錳量鋼兩類。碳工具鋼播報編輯碳素工具鋼①鋼號冠以“T”，以免與其他鋼類相混。②鋼號中的數(shù)字表示碳含量，以平均碳含量的千分之幾表示。例如“T8”表示平均碳含量為0.8%。③錳含量較高者，在鋼號最后標(biāo)出“Mn”，例如“T8Mn”。④高級優(yōu)質(zhì)碳素工具鋼的磷、硫含量，比一般優(yōu)質(zhì)碳素工具鋼低，在鋼號最后加注字母“A”，以示區(qū)別，例如“T8MnA”。易切削鋼播報編輯Q235B①鋼號冠以“Y”，以區(qū)別于優(yōu)質(zhì)碳素結(jié)構(gòu)鋼。②字母“Y”后的數(shù)字表示碳含量，以平均碳含量的萬分之幾表示，例如平均碳含量為0.3%的易切削鋼，其鋼號為“Y30”。③錳含量較高者，亦在鋼號后標(biāo)出“Mn”，例如“Y40Mn”。合金鋼播報編輯合金結(jié)構(gòu)鋼①鋼號開頭的兩位數(shù)字表示鋼的碳含量，以平均碳含量的萬分之幾表示，如40Cr。②鋼中主要合金元素，除個別微合金元素外，一般以百分之幾表示。當(dāng)平均合金含量≤1.5%時，鋼號中一般只標(biāo)出元素符號，而不標(biāo)明含量，但在特殊情況下易致混淆者，在元素符號后亦可標(biāo)以數(shù)字“1”，例如鋼號“12CrMoV”和“12Cr1MoV”，前者鉻含量為0.4-0.6%，后者為0.9-1.2%，其余成分全部相同。當(dāng)合金元素平均含量≥1.5%、≥2.5%、≥3.5%……時，在元素符號后面應(yīng)標(biāo)明含量，可相應(yīng)表示為2、3、4……等。例如18Cr2Ni4WA。③鋼中的釩V、鈦Ti、鋁AL、硼B(yǎng)、稀土RE等合金元素，均屬微合金元素，雖然含量很低，仍應(yīng)在鋼號中標(biāo)出。例如20MnVB鋼中。釩為0.07-0.12%，硼為0.001-0.005%。④高級優(yōu)質(zhì)鋼應(yīng)在鋼號最后加“A”，以區(qū)別于一般優(yōu)質(zhì)鋼。⑤專門用途的合金結(jié)構(gòu)鋼，鋼號冠以（或后綴）代表該鋼種用途的符號。例如，鉚螺專用的30CrMnSi鋼，鋼號表示為ML30CrMnSi。低高鋼播報編輯低合金高強(qiáng)度鋼①鋼號的表示方法，基本上和合金結(jié)構(gòu)鋼相同。②對專業(yè)用低合金高強(qiáng)度鋼，應(yīng)在鋼號最后標(biāo)明。例如16Mn鋼，用于橋梁的專用鋼種為“16Mnq”，汽車大梁的專用鋼種為“16MnL”，壓力容器的專用鋼種為“16MnR”。彈簧鋼播報編輯彈簧鋼按化學(xué)成分可分為碳素彈簧鋼和合金彈簧鋼兩類，其鋼號表示方法，前者基本上與優(yōu)質(zhì)碳素結(jié)構(gòu)鋼相同，后者基本上與合金結(jié)構(gòu)鋼相同。滾軸鋼播報編輯滾動軸承鋼①鋼號冠以字母“G”，表示滾動軸承鋼類。②高碳鉻軸承鋼鋼號的碳含量不標(biāo)出，鉻含量以千分之幾表示。例如GCr15。滲碳軸承鋼的鋼號表示方法，基本上和合金結(jié)構(gòu)鋼相同電工純鐵播報編輯電工用純鐵①它的牌號由字母“DT”和數(shù)字組成，“DT”表示電工用純鐵，數(shù)字表示不同牌號的順序號，例如DT3。②在數(shù)字后面所加的字母表示電磁性能：A——高級、E——特級、C——超級，例如DT8A。電工鋼播報編輯電工用不銹鋼Q235B它的鋼號前冠以字母“H”，以區(qū)別于其他鋼類。例如不銹鋼焊絲為“H2Cr13”，可以區(qū)別于不銹鋼“2Cr13”。①鋼號由字母和數(shù)字組成。鋼號頭部字母DR表示電工用熱軋硅鋼，DW表示電工用冷軋無取向硅鋼，DQ表示電工用冷軋取向硅鋼。②字母之后的數(shù)字表示鐵損值（W/kg）的100倍。③鋼號尾部加字母“G”者，表示在高頻率下檢驗的；未加“G”者，表示在頻率為50周波下檢驗的。例如鋼號DW470表示電工用冷軋無取向硅鋼產(chǎn)品在50赫頻率時的最大單位重量鐵損值為4.7W/kg。Q235B性能Q235B有一定的伸長率、強(qiáng)度，良好的韌性和鑄造性，易于沖壓和焊接，廣泛用于一般機(jī)械零件的制造。主要用于建筑、橋梁工程上質(zhì)量要求較高的焊接結(jié)構(gòu)件。Q235A和Q235B的區(qū)別：鋼材皆屬于碳素鋼。在國家標(biāo)準(zhǔn)GB700—2006中，對Q235A和Q235B的材質(zhì)區(qū)分主要在鋼材的含碳量方面，材質(zhì)是Q235A的鋼材含碳量不大于0.22﹪，材質(zhì)是Q235B的鋼材含碳量不大于0.20﹪；Q235A的材質(zhì)不做沖擊實驗，Q235B的材質(zhì)而是做常溫沖擊實驗，V型缺口。相對來說，材質(zhì)是Q235B的鋼材的機(jī)械性能要遠(yuǎn)遠(yuǎn)優(yōu)于材質(zhì)是Q235A的鋼材。一般情況下，鋼廠在成品型材出廠之前都在標(biāo)識牌上做了標(biāo)識。用戶可以在標(biāo)識牌上判別其材質(zhì)是Q235A，還是Q235B，或其他材質(zhì)。設(shè)計壓力P≤1.6MPa；使用溫度為0～350℃；鋼板厚度≥20mmQ235B元素含量Q235B碳 C ：≤0.20%硅 Si：≤0.35%錳 Mn：≤1.4%硫 S ：≤0.045%磷 P ：≤0.045%鉻 Cr：允許殘余含量≤0.30%鎳 Ni：允許殘余含量≤0.30%銅 Cu：允許殘余含量≤0.30 %注：脫氧方法:F、b、Z新手上路成長任務(wù)編輯入門編輯規(guī)則本人編輯我有疑問內(nèi)容質(zhì)疑在線客服官方貼吧意見反饋投訴建議舉報不良信息未通過詞條申訴投訴侵權(quán)信息封禁查詢與解封?2025?Baidu?使用百度前必讀?|?百科協(xié)議?|?隱私政策?|?百度百科合作平臺?|?京ICP證030173號?京公網(wǎng)安備11000002000001號window.PAGE_DATA= {"lemmaId":87647,"lemmaTitle":"Q235B","lemmaDesc":"碳素結(jié)構(gòu)鋼","lemmaType":0,"uid":89611495,"uname":"安鋼集團(tuán)公司","createTime":1230708652,"updateTime":1749308193,"isDefault":0,"isDeleted":0,"rank":1,"extData":{"LemmaId":2104503,"audit_comment_category":390,"classify":[{"id":1033565,"idPath":"1033565/1033595/1033764","leafId":1033764,"leafName":"材料","mainCategory":1,"name":"應(yīng)用科學(xué)","path":"應(yīng)用科學(xué)/材料學(xué)/材料"}],"discussion":{"relateInfo":[{"relateId":32990,"relateType":1},{"relateId":33056,"relateType":1}]},"helloEarth":1,"isBaikeV6":1,"isFrontV6":1,"isSapp":0,"isWaitForPersonal":false,"is_locked":0,"kpdClassify":[{"id":337502,"name":"工業(yè)產(chǎn)品"}],"lemmaId":2104503,"lemma_id":2104503,"newEditor":1,"origAuditArea":90,"origCommandNo":13001003,"pass_count":58,"redirectFrom":[{"fromLemmaId":2923854,"fromTitle":"Q235B鋼管"},{"fromLemmaId":3564013,"fromTitle":"Q235B鋼板"}],"subLemmaId":2104503,"uip":"10.99.204.212","updateTime":1749308194,"wapEdit":0},"extFlag":0,"versionId":642762738,"versionUid":236859004,"versionUname":"我想知道10000","versionContributeFlag":{"flagId":1,"name":"百科蝌蚪團(tuán)","url":"https://baike.baidu.com/kedou"},"versionCreateTime":1749302937,"catalog":[{"level":1,"title":"碳鋼","index":"1","uuid":"gnx71tyne2","height":28},{"level":1,"title":"優(yōu)質(zhì)碳鋼","index":"2","uuid":"gnx71tynfv","height":28},{"level":1,"title":"碳工具鋼","index":"3","uuid":"gnx71tynhl","height":28},{"level":1,"title":"易切削鋼","index":"4","uuid":"gnx71tpqmw","height":28},{"level":1,"title":"合金鋼","index":"5","uuid":"gnx71tynje","height":28},{"level":1,"title":"低高鋼","index":"6","uuid":"gnx71tynl4","height":28},{"level":1,"title":"彈簧鋼","index":"7","uuid":"gnx71tpqqf","height":28},{"level":1,"title":"滾軸鋼","index":"8","uuid":"gnx71tynmt","height":28},{"level":1,"title":"電工純鐵","index":"9","uuid":"gnx71tynov","height":28},{"level":1,"title":"電工鋼","index":"10","uuid":"gnx71tynuk","height":28}],"abstract":[],"abstractAlbum":{"content":[{"albumId":1,"src":"0eb30f2442a7d933bc9eb96aa04bd11373f001f0","width":800,"height":600,"uuid":"a6kn15twtk"},{"albumId":1,"src":"e850352ac65c103853438d82604b8413b07eca802362","width":800,"height":800,"uuid":"uNrqMDLjDfdZ"}],"desc":"概述圖冊","total":2,"coverPic":{"albumId":1,"url":"https://bkimg.cdn.bcebos.com/pic/0eb30f2442a7d933bc9eb96aa04bd11373f001f0?x-bce-process=image/resize,m_lfit,w_536,limit_1/quality,Q_70","src":"0eb30f2442a7d933bc9eb96aa04bd11373f001f0","origSrc":"0eb30f2442a7d933bc9eb96aa04bd11373f001f0","width":800,"height":600,"uuid":"a6kn15twtk"},"wapPic":{"src":"b90e7bec54e736d12f2e2f48490a58c2d5628535c362","origSrc":"0eb30f2442a7d933bc9eb96aa04bd11373f001f0","width":801,"height":533,"uuid":"uNrqPT2zMBMD"},"sharePic":{"src":"203fb80e7bec54e736d1ba5e6b628c504fc2d5623c62","origSrc":"0eb30f2442a7d933bc9eb96aa04bd11373f001f0","width":780,"height":780,"uuid":"uNrqPUzUmMvi"}},"modules":{"adManager":{"data":{"AI":0,"wapRelatedBusiness":1}},"discussion":{"showHelpEdit":1},"globalConfig":{"data":{"serviceAdLemmaCategory":[337597,337474]}},"paper":{"switch":false},"second":{"head":[{"secondId":25106832,"type":1,"form":1,"style":1,"source":1,"sourceId":"2258799077505512095","authorType":1,"platform":1,"lemma":{"relType":1,"relValue":[],"te":0,"tr":[],"ts":0,"tw":0,"type":1,"weight":0},"score":2,"createTime":1577956238,"publishTime":1578015648,"isPay":0,"collectionId":0}]},"pinzhuan":{}},"albums":[{"albumId":1,"desc":"概述圖冊","total":2,"coverPic":{"albumId":1,"src":"0eb30f2442a7d933bc9eb96aa04bd11373f001f0","url":"https://bkimg.cdn.bcebos.com/pic/0eb30f2442a7d933bc9eb96aa04bd11373f001f0?x-bce-process=image/resize,m_lfit,w_536,limit_1/quality,Q_70","width":800,"height":600,"desc":"概述圖冊","uuid":"a6kn15twtk"},"content":[{"albumId":1,"src":"0eb30f2442a7d933bc9eb96aa04bd11373f001f0","url":"","width":800,"height":600,"uuid":"a6kn15twtk"},{"albumId":1,"src":"e850352ac65c103853438d82604b8413b07eca802362","url":"","width":800,"height":800,"uuid":"uNrqMDLjDfdZ"}]},{"albumId":0,"desc":"詞條圖片","total":3,"coverPic":{"albumId":0,"tag":"image","type":"normal","src":"63d9f2d3572c11dfe45b5161632762d0f603c2ee","url":"https://bkimg.cdn.bcebos.com/pic/63d9f2d3572c11dfe45b5161632762d0f603c2ee?x-bce-process=image/resize,m_lfit,w_220,h_220,limit_1","width":856,"height":1024,"cropWidth":183.90625,"cropHeight":220,"owner":"可愛的江小悅","title":"Q235B","layout":"right","style":"float: right;","uuid":"e5uurbhc4bb"},"content":[{"albumId":0,"tag":"image","type":"normal","src":"63d9f2d3572c11dfe45b5161632762d0f603c2ee","url":"https://bkimg.cdn.bcebos.com/pic/63d9f2d3572c11dfe45b5161632762d0f603c2ee?x-bce-process=image/resize,m_lfit,w_220,h_220,limit_1","width":856,"height":1024,"cropWidth":183.90625,"cropHeight":220,"owner":"可愛的江小悅","title":"Q235B","layout":"right","style":"float: right;","uuid":"e5uurbhc4bb"},{"albumId":0,"tag":"image","type":"normal","src":"faedab64034f78f0443eedb278310a55b3191cbd","url":"https://bkimg.cdn.bcebos.com/pic/faedab64034f78f0443eedb278310a55b3191cbd?x-bce-process=image/resize,m_lfit,w_220,h_220,limit_1","width":1600,"height":1200,"cropWidth":220,"cropHeight":165,"owner":"可愛的江小悅","title":"Q235B","layout":"right","style":"float: right;","uuid":"3mnt932ni0b"},{"albumId":0,"tag":"image","type":"normal","src":"267f9e2f07082838218a3256b899a9014d08f1e9","url":"https://bkimg.cdn.bcebos.com/pic/267f9e2f07082838218a3256b899a9014d08f1e9?x-bce-process=image/resize,m_lfit,w_220,h_220,limit_1","width":500,"height":400,"cropWidth":220,"cropHeight":176,"owner":"可愛的江小悅","title":"Q235B","layout":"right","style":"float: right;","uuid":"7zbx6p1fce8"}]}],"card":{"type":243,"left":[{"key":"name","title":"中文名","isArray":false,"delimiter":"","data":[{"dataType":"text","text":[{"tag":"text","text":"碳鋼"}]}]},{"key":"foreignName","title":"外文名","isArray":true,"delimiter":"","data":[{"dataType":"text","text":[{"tag":"text","text":"Q235B"}]}]}],"right":[{"key":"application","title":"應(yīng)用","isArray":false,"delimiter":"","data":[{"dataType":"text","text":[{"lemmaId":10918921,"tag":"innerlink","text":"橋梁鋼"},{"tag":"text","text":"、船用鋼"}]}]},{"key":"customDefault","title":"碳含量","isArray":false,"delimiter":"","data":[{"dataType":"text","text":[{"tag":"text","text":"≤0.2%"}]}]},{"key":"customDefault","title":"錳含量","isArray":false,"delimiter":"","data":[{"dataType":"text","text":[{"tag":"text","text":"≤1.4%"}]}]}]},"lemmaCnt":1,"tips":{"isPolyseme":0},"encodeLemmaId":"7e4db7414957664e5dd90cf3","versionUk":"8ogLfaaInYqu8DvS9tH7wA","description":"由Q+數(shù)字+質(zhì)量等級符號+脫氧方法符號組成。它的鋼號冠以“Q”，代表鋼材的屈服點，后面的數(shù)字表示屈服點數(shù)值，單位是MPa例如Q235表示屈服點（σs）為235 ..."}window.__abbaidu_2020_subidgetf||(window.__abbaidu_2020_subidgetf=function(){return"01000000"}) 碳鋼碳素結(jié)構(gòu)鋼專門用途的碳素鋼，例如橋梁鋼、船用鋼等，基本上采用碳素結(jié)構(gòu)鋼的表示方法，但在鋼號最后附加表示用途的字母。優(yōu)質(zhì)碳鋼優(yōu)質(zhì)碳素結(jié)構(gòu)鋼①鋼號開頭的兩位數(shù)字表示鋼的碳含量，以平均碳含量的萬分之幾表示，例如平均碳含量為0.45%的鋼，鋼號為“45”，它不是順序號，所以不能讀成45號鋼。②錳含量較高的優(yōu)質(zhì)碳素結(jié)構(gòu)鋼，應(yīng)將錳元素標(biāo)出，例如50Mn。③沸騰鋼、半鎮(zhèn)靜鋼及專門用途的優(yōu)質(zhì)碳素結(jié)構(gòu)鋼應(yīng)在鋼號最后特別標(biāo)出，例如平均碳含量為0.1%的半鎮(zhèn)靜鋼，其鋼號為10b。④優(yōu)質(zhì)碳素結(jié)構(gòu)鋼是按化學(xué)成分和機(jī)械性能供應(yīng)的。鋼中的硫、磷及非金屬夾雜物的含量較少，表明質(zhì)量，組織結(jié)構(gòu)的均勻性能較好，常用于需要經(jīng)過熱處理的各種較重要的機(jī)械結(jié)構(gòu)零件。⑤根據(jù)化學(xué)成分的不同，優(yōu)質(zhì)碳素結(jié)構(gòu)鋼又分為普通含錳量鋼和較高含錳量鋼兩類。碳工具鋼碳素工具鋼①鋼號冠以“T”，以免與其他鋼類相混。②鋼號中的數(shù)字表示碳含量，以平均碳含量的千分之幾表示。例如“T8”表示平均碳含量為0.8%。③錳含量較高者，在鋼號最后標(biāo)出“Mn”，例如“T8Mn”。④高級優(yōu)質(zhì)碳素工具鋼的磷、硫含量，比一般優(yōu)質(zhì)碳素工具鋼低，在鋼號最后加注字母“A”，以示區(qū)別，例如“T8MnA”。易切削鋼①鋼號冠以“Y”，以區(qū)別于優(yōu)質(zhì)碳素結(jié)構(gòu)鋼。②字母“Y”后的數(shù)字表示碳含量，以平均碳含量的萬分之幾表示，例如平均碳含量為0.3%的易切削鋼，其鋼號為“Y30”。③錳含量較高者，亦在鋼號后標(biāo)出“Mn”，例如“Y40Mn”。合金鋼合金結(jié)構(gòu)鋼①鋼號開頭的兩位數(shù)字表示鋼的碳含量，以平均碳含量的萬分之幾表示，如40Cr。②鋼中主要合金元素，除個別微合金元素外，一般以百分之幾表示。當(dāng)平均合金含量<1.5%時，鋼號中一般只標(biāo)出元素符號，而不標(biāo)明含量，但在特殊情況下易致混淆者，在元素符號后亦可標(biāo)以數(shù)字“1”，例如鋼號“12CrMoV”和“12Cr1MoV”，前者鉻含量為0.4-0.6%，后者為0.9-1.2%，其余成分全部相同。當(dāng)合金元素平均含量≥1.5%、≥2.5%、≥3.5%……時，在元素符號后面應(yīng)標(biāo)明含量，可相應(yīng)表示為2、3、4……等。例如18Cr2Ni4WA。③鋼中的釩V、鈦Ti、鋁AL、硼B(yǎng)、稀土RE等合金元素，均屬微合金元素，雖然含量很低，仍應(yīng)在鋼號中標(biāo)出。例如20MnVB鋼中。釩為0.07-0.12%，硼為0.001-0.005%。④高級優(yōu)質(zhì)鋼應(yīng)在鋼號最后加“A”，以區(qū)別于一般優(yōu)質(zhì)鋼。⑤專門用途的合金結(jié)構(gòu)鋼，鋼號冠以（或后綴）代表該鋼種用途的符號。例如，鉚螺專用的30CrMnSi鋼，鋼號表示為ML30CrMnSi。低高鋼低合金高強(qiáng)度鋼①鋼號的表示方法，基本上和合金結(jié)構(gòu)鋼相同。②對專業(yè)用低合金高強(qiáng)度鋼，應(yīng)在鋼號最后標(biāo)明。例如16Mn鋼，用于橋梁的專用鋼種為“16Mnq”，汽車大梁的專用鋼種為“16MnL”，壓力容器的專用鋼種為“16MnR”。彈簧鋼彈簧鋼按化學(xué)成分可分為碳素彈簧鋼和合金彈簧鋼兩類，其鋼號表示方法，前者基本上與優(yōu)質(zhì)碳素結(jié)構(gòu)鋼相同，后者基本上與合金結(jié)構(gòu)鋼相同。滾軸鋼滾動軸承鋼①鋼號冠以字母“G”，表示滾動軸承鋼類。②高碳鉻軸承鋼鋼號的碳含量不標(biāo)出，鉻含量以千分之幾表示。例如GCr15。滲碳軸承鋼的鋼號表示方法，基本上和合金結(jié)構(gòu)鋼相同電工純鐵電工用純鐵①它的牌號由字母“DT”和數(shù)字組成，“DT”表示電工用純鐵，數(shù)字表示不同牌號的順序號，例如DT3。②在數(shù)字后面所加的字母表示電磁性能：A——高級、E——特級、C——超級，例如DT8A。電工鋼電工用不銹鋼它的鋼號前冠以字母“H”，以區(qū)別于其他鋼類。例如不銹鋼焊絲為“H2Cr13”，可以區(qū)別于不銹鋼“2Cr13”。①鋼號由字母和數(shù)字組成。鋼號頭部字母DR表示電工用熱軋硅鋼，DW表示電工用冷軋無取向硅鋼，DQ表示電工用冷軋取向硅鋼。②字母之后的數(shù)字表示鐵損值（W/kg）的100倍。③鋼號尾部加字母“G”者，表示在高頻率下檢驗的；未加“G”者，表示在頻率為50周波下檢驗的。例如鋼號DW470表示電工用冷軋無取向硅鋼產(chǎn)品在50赫頻率時的最大單位重量鐵損值為4.7W/kg。Q235B性能Q235B有一定的伸長率、強(qiáng)度，良好的韌性和鑄造性，易于沖壓和焊接，廣泛用于一般機(jī)械零件的制造。主要用于建筑、橋梁工程上質(zhì)量要求較高的焊接結(jié)構(gòu)件。Q235A和Q235B的區(qū)別：鋼材皆屬于碳素鋼。在國家標(biāo)準(zhǔn)GB700—88中，對Q235A和Q235B的材質(zhì)區(qū)分主要在鋼材的含碳量方面，材質(zhì)是Q235A的材質(zhì)含碳量在0.14—0.22﹪之間；Q235A的材質(zhì)不做沖擊實驗，Q235B的材質(zhì)而是做常溫沖擊實驗，V型缺口。相對來說，材質(zhì)是Q235B的鋼材的機(jī)械性能要遠(yuǎn)遠(yuǎn)優(yōu)于材質(zhì)是Q235A的鋼材。一般情況下，鋼廠在成品型材出廠之前都在標(biāo)識牌上做了標(biāo)識。用戶可以在標(biāo)識牌上判別其材質(zhì)是Q235A，還是Q235B，或其他材質(zhì)。設(shè)計壓力P≤1.6MPa；使用溫度為0～350℃；鋼板厚度>=20mmQ235B元素含量碳 C ：≤0.20%硅 Si：≤0.35%錳 Mn：≤1.4%硫 S ：≤0.045%磷 P ：≤0.045%鉻 Cr：允許殘余含量≤0.30%鎳 Ni：允許殘余含量≤0.30%銅 Cu：允許殘余含量≤0.30 %注：脫氧方法:F、b、Z
滬ICP備2021035645號
在線客服