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.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隊權威合作個人中心收藏查看我的收藏0有用+10播報討論上傳視頻傳輸速率為 ψ (%)≥50的型號是日本JISG 4051-79(94)標準規(guī)定的高級優(yōu)質(zhì)碳素結構鋼，采用電爐、平爐或純氧轉(zhuǎn)爐全靜鋼工藝制造。其碳含量為0.27%-0.34%，錳含量0.50%-0.80%，硫、磷雜質(zhì)含量嚴格控制，供貨硬度范圍為152-212HBS [1]。該材料具有較高強度、耐磨性及韌性，斷面收縮率≥50%，伸長率≥21%，適用于正火狀態(tài)下使用。通過880℃正火、860℃淬火與600℃回火等熱處理工藝，抗拉強度可達≥539MPa，屈服強度≥333MPa [1]，沖擊韌性值≥108J/cm2。其焊接性中等，需配合預熱及低氫型焊條工藝。該鋼種廣泛應用于制造螺栓、齒輪、軸類等中小型機械零件，也可用于汽車模具修補及冷作模具墊板，切削加工性能優(yōu)良，適合自動化機床批量生產(chǎn)標準件。中文名外文名斷面收縮率ψ (%)≥50抗拉強度σb (MPa)≥490屈服強度σs (MPa)≥295伸長率δ5 (%)≥21目錄1基本信息2化學成分3力學性能4熱處理工藝及規(guī)范5鋼特性6應用舉例基本信息播報編輯（1）特性 日本JISG 4051-79（94）標準鋼號，高級優(yōu)質(zhì)碳素鋼。該鋼是由電爐、平爐或純氧轉(zhuǎn)爐煉鋼法制造的全靜鋼，耐磨性及韌性極高，該鋼金相組織均勻，加工性能優(yōu)良。強度與淬透性比30號鋼高，焊接性中等，冷變形、塑性中等、切削加工性好，一般在正火狀態(tài)下使用，用于制造螺栓、螺母、杠桿及在高應力下工作的小型零件。（2）供貨狀態(tài)硬度 152~212HBS。化學成分播報編輯【化學成分】（質(zhì)量分數(shù)，%）碳(C)0.27～0.34,錳(Mn)0.50～0.80鎳(Ni)≤0.30,硅(Si)0.17～0.37磷(P)≤0.035,硫(S)≤0.035,鉻(Cr)≤0.25,銅(Cu)≤0.25、力學性能播報編輯沖擊功 Akv (J)≥63,硬度:未熱處理≤179HB,熱處理工藝及規(guī)范播報編輯880℃正火、860℃淬火、600℃回火。焊接性能淬火回火規(guī)范：淬火溫度850-900℃，水冷，回火溫度550-650℃，急冷。抗拉強度≥539MPa，屈服強度≥333MPa，伸長率≥23%，收縮率≥57%，沖擊韌性值（沖擊韌度）≥108J/cm2,硬度≤152-212HB [1]鋼接合性較好之中硬度鋼焊條，適用于空冷鋼、鑄鋼。鋼特性播報編輯與低碳鋼相比，強度、硬度均較高，具有較好的韌性、焊接性尚好，此鋼大多在正火狀態(tài)下使用，也可進行調(diào)質(zhì)處理。用途：適用于采用熱鍛、熱壓及切削加式方法，制造截面較小，受力不大工作溫度≤150℃的零件，如絲桿、拉桿、軸鍵、吊環(huán)、齒輪、套筒等；切削性能良好，廣泛應用于自動機床上加工的螺栓、螺釘?shù)?；也適用于制造需冷頂鍛零件及焊接件；還可用作滲碳、碳氮共滲等零件。應用舉例播報編輯（一）汽車板金覆蓋件模具及大型五金板金沖壓模具之拉延、拉伸部位修補，也可用于硬面制作。 另外在使用時也有一些需要注意的：1. 于潮濕場地施工前，焊條先以150-200°C烘干30-50分鐘。2. 通常施以200°C以上預熱，焊接后空冷，可能的話最好實施應力消除。3. 需多層堆焊處，以CMC-E30N打底，可得到較好的焊接效果。硬度 HRC 48-52適用電流范圍： 直徑及長度m/m 3.2*350mm 4.0*350mm電流范圍（Amp） 70-100 130-150（二）可用于各種冷作模具的墊板（三）鉆模固定板等新手上路成長任務編輯入門編輯規(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":8477865,"lemmaTitle":"","lemmaDesc":"傳輸速率為 ψ 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152~212HBS。化學成分【化學成分】（質(zhì)量分數(shù)，%）碳(C)0.27～0.34,錳(Mn)0.50～0.80鎳(Ni)≤0.30,硅(Si)0.17～0.37磷(P)≤0.035,硫(S)≤0.035,鉻(Cr)≤0.25,銅(Cu)≤0.25、力學性能沖擊功 Akv (J)≥63,硬度:未熱處理≤179HB,試樣毛坯尺寸:25mm熱處理工藝及規(guī)范880℃正火、860℃淬火、600℃回火。焊接性能淬火回火規(guī)范：淬火溫度850-900℃，水冷，回火溫度550-650℃，急冷?？估瓘姸取?39MPa，屈服強度≥333MPa，伸長率≥23%，收縮率≥57%，沖擊韌性值（沖擊韌度）≥108J/cm²,硬度≤152-212HB [1] S30C鋼接合性較好之中硬度鋼焊條，適用于空冷鋼、鑄鋼。S30C鋼特性與低碳鋼相比，強度、硬度均較高，具有較好的韌性、焊接性尚好，此鋼大多在正火狀態(tài)下使用，也可進行調(diào)質(zhì)處理。用途：適用于采用熱鍛、熱壓及切削加式方法，制造截面較小，受力不大工作溫度≤150℃的零件，如絲桿、拉桿、軸鍵、吊環(huán)、齒輪、套筒等；切削性能良好，廣泛應用于自動機床上加工的螺栓、螺釘?shù)龋灰策m用于制造需冷頂鍛零件及焊接件；還可用作滲碳、碳氮共滲等零件。應用舉例（一）汽車板金覆蓋件模具及大型五金板金沖壓模具之拉延、拉伸部位修補，也可用于硬面制作。 另外在使用時也有一些需要注意的：1. 于潮濕場地施工前，焊條先以150-200°C烘干30-50分鐘。2. 通常施以200°C以上預熱，焊接后空冷，可能的話最好實施應力消除。3. 需多層堆焊處，以CMC-E30N打底，可得到較好的焊接效果。硬度 HRC 48-52適用電流范圍：直徑及長度m/m 3.2*350mm 4.0*350mm電流范圍（Amp） 70-100 130-150（二）可用于各種冷作模具的墊板（三）鉆模固定板等
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