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[1]。其化學(xué)成分包含碳（0.37%-0.45%）、錳（0.90%-1.20%）、鉻（0.90%-1.20%）及鉬（0.20%-0.30%），通過調(diào)質(zhì)處理（850℃油淬與600℃回火）形成回火索氏體組織，具備抗拉強(qiáng)度≥980MPa、屈服強(qiáng)度≥785MPa及布氏硬度≤217HBS的力學(xué)性能 [2]。該材料具有高淬透性（油淬臨界直徑達(dá)60-100mm以上），調(diào)質(zhì)后兼具高強(qiáng)度與韌性，適用于重型機(jī)械、汽輪機(jī)零件等領(lǐng)域，可替代40CrNiMo使用 [1-2]。供貨形態(tài)包括棒材、板材等，并通過國(guó)家標(biāo)準(zhǔn)進(jìn)行質(zhì)量管控 [1]。中文名執(zhí)行標(biāo)準(zhǔn)GB/T3077-1999統(tǒng)一數(shù)字代號(hào)A34402交貨狀態(tài)熱處理或不熱處理材 料高強(qiáng)度中碳調(diào)質(zhì)錳鋼目錄1化學(xué)成分2鋼廠現(xiàn)貨規(guī)格3力學(xué)性能?主要特性?應(yīng)用舉例4重量計(jì)算公式化學(xué)成分播報(bào)編輯40CRMNMO圓鋼質(zhì)量分?jǐn)?shù)（%）：C：0.37～0.45Si：0.17～0.37Mn：0.90～1.20Cr：0.90～1.20Mo：0.20～0.30鋼廠現(xiàn)貨規(guī)格播報(bào)編輯品名規(guī)格/mm材質(zhì)品名規(guī)格/mm材質(zhì)光亮圓棒3.0-25熱軋鋼板4-1040Cr熱軋圓鋼12-50熱軋鋼板8-1040Cr熱軋圓鋼Ф140-150熱軋鋼板18-2040Cr熱軋圓鋼Ф200-280鍛打鋼板80-10040Cr熱軋圓鋼Ф50-70鍛打鋼板16040Cr熱軋圓鋼Ф50-90鍛打鋼板17040Cr熱軋圓鋼Ф50-95鍛打鋼板18040Cr熱軋鍛圓Ф210-360鍛打鍛圓35040Cr力學(xué)性能播報(bào)編輯(2張)【試樣毛坯尺寸】25mm【熱處理】淬火加熱溫度（℃）：850；冷卻劑：油回火加熱溫度（℃）：600；冷卻劑：水、油●金相組織：回火索氏體?！窠回洜顟B(tài)：抗拉強(qiáng)度（σb/MPa）：≥980屈服點(diǎn)（σs/MPa）：≥785斷后伸長(zhǎng)率（δ5/%）：≥10斷面收縮率（ψ/%）：≥45沖擊吸收功（Aku2/J）：≥63布氏硬度（HBS100/3000）（退火或高溫回火狀態(tài)）：≤217主要特性調(diào)質(zhì)處理后具有良好的綜合力學(xué)性能，淬透性較好，回火穩(wěn)定性較高。大多在調(diào)質(zhì)狀態(tài)下使用。應(yīng)用舉例常用于制造重載、截面較大的齒輪軸、齒輪、大卡車的后橋半軸、軸、偏心軸、連桿、汽輪機(jī)的類似零件，還可代替40CrNiMo使用。合金結(jié)構(gòu)鋼1330H 1335H 1340H 1345H 4027H 4028H 4032H 4037H 4042H 4047H 4118H 4130H 4135H 4137H 4140H 4142H 4145H 4147H 4150H 4161H 4320H 4340H 4340H 4419H 4620H 4621H 4626H 4718H 4720H 4815H 4817H 4720H 50B40H 50B44H 5046H 50B46H 50B50H 50B60H 5120H 5130H 5132H 5135H 5140H 5145H 5147H 5150H 5155H 5160H 51B60H 6118H 6150H 81B45H 8617H 8620H 8622H 8625H 8627H 8630H 86B30H 8637H 8640H 8642H 8645H 86B45H 8650H 8655H 8660H 8720H 8740H 8822H 9260H 9310H 94B15H 94B17H 94B30H 1038H 1045H 1522H 1524H 1526H 1541H 15B21H 15B35H 15B37H 15B41H 15B48H 15B62H SMn420，SMn433，SMn438，SMn443，SCr415，SCr420 ，SCr430 ，SCr440 ，SCr445 ，SCM415 ，SCM418 ，SCM420 ，SCM421 ，SCM425，SCM430，SCM432，SCM435，SCM440，SCM445，SCM822，SNC236，SNC415，SNC631，SNC815，SNC836，SNCM220，SNCM415，SNCM420，SNCM431，SNCM439，SNCM447，SNCM616，SNCM625，SNCM630，SNCM815，SACM645重量計(jì)算公式播報(bào)編輯◆扁鋼:每米重量(公斤)=0.00785×厚度×邊寬◆管材:每米重量(公斤)=0.02466×壁厚×(外徑-壁厚)◆棒材：直徑*直徑*長(zhǎng)度*0.00623=kg/米（每米的重量）◆板材：長(zhǎng)*寬*高*0.00785=kg/米（每米的重量）新手上路成長(zhǎng)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(bào)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(tái)?|?京ICP證030173號(hào)?京公網(wǎng)安備11000002000001號(hào)window.PAGE_DATA= 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40CrMnMo 40CrMnMo，執(zhí)行標(biāo)準(zhǔn):GB/T3077-1999統(tǒng)一數(shù)字代號(hào):A34402。以熱處理(正火、退火或高溫回火)或不熱處理狀態(tài)交貨，交貨狀態(tài)應(yīng)在合同中注明。本詞條 無基本信息模塊, 歡迎各位 編輯詞條，額外獲取5個(gè)金幣。目錄1化學(xué)成分2鋼廠現(xiàn)貨規(guī)格3重量計(jì)算公式折疊編輯本段化學(xué)成分質(zhì)量分?jǐn)?shù)(%):40CRMNMO圓鋼40CRMNMO圓鋼C:0.37~0.45Si:0.17~0.37Mn:0.90~1.20Cr:0.90~1.20Mo:0.20~0.30[1]
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