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个人中心收藏查看我的收藏0有用+10播报讨论上传视频高强度中碳调质锰钢的材料名称是一种高强度中碳调质锰钢，属于合金结构钢类别，主要应用于制造承受重载荷、大截面机械部件，如齿轮轴、连杆及卡车后桥半轴等 [1]。其化学成分包含碳（0.37%-0.45%）、锰（0.90%-1.20%）、铬（0.90%-1.20%）及钼（0.20%-0.30%），通过调质处理（850℃油淬与600℃回火）形成回火索氏体组织，具备抗拉强度≥980MPa、屈服强度≥785MPa及布氏硬度≤217HBS的力学性能 [2]。该材料具有高淬透性（油淬临界直径达60-100mm以上），调质后兼具高强度与韧性，适用于重型机械、汽轮机零件等领域，可替代40CrNiMo使用 [1-2]。供货形态包括棒材、板材等，并通过国家标准进行质量管控 [1]。中文名
执行标准GB/T3077-1999
统一数字代号A34402
交货状态热处理或不热处理
材    料高强度中碳调质锰钢

目录
1化学成分2钢厂现货规格3力学性能▪主要特性▪应用举例4重量计算公式
化学成分
播报编辑40CRMNMO圆钢质量分数（%）：C：0.37～0.45Si：0.17～0.37Mn：0.90～1.20Cr：0.90～1.20Mo：0.20～0.30
钢厂现货规格
播报编辑品名规格/mm材质品名规格/mm材质光亮圆棒3.0-25热轧钢板4-1040Cr热轧圆钢12-50热轧钢板8-1040Cr热轧圆钢Ф140-150热轧钢板18-2040Cr热轧圆钢Ф200-280锻打钢板80-10040Cr热轧圆钢Ф50-70锻打钢板16040Cr热轧圆钢Ф50-90锻打钢板17040Cr热轧圆钢Ф50-95锻打钢板18040Cr热轧锻圆Ф210-360锻打锻圆35040Cr
力学性能
播报编辑(2张)【试样毛坯尺寸】25mm【热处理】淬火加热温度（℃）：850；冷却剂：油回火加热温度（℃）：600；冷却剂：水、油●金相组织：回火索氏体。●交货状态：抗拉强度（σb/MPa）：≥980屈服点（σs/MPa）：≥785断后伸长率（δ5/%）：≥10断面收缩率（ψ/%）：≥45冲击吸收功（Aku2/J）：≥63布氏硬度（HBS100/3000）（退火或高温回火状态）：≤217主要特性调质处理后具有良好的综合力学性能，淬透性较好，回火稳定性较高。大多在调质状态下使用。应用举例常用于制造重载、截面较大的齿轮轴、齿轮、大卡车的后桥半轴、轴、偏心轴、连杆、汽轮机的类似零件，还可代替40CrNiMo使用。合金结构钢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
重量计算公式
播报编辑◆扁钢:每米重量(公斤)=0.00785×厚度×边宽◆管材:每米重量(公斤)=0.02466×壁厚×(外径-壁厚)◆棒材：直径*直径*长度*0.00623=kg/米（每米的重量）◆板材：长*宽*高*0.00785=kg/米（每米的重量）新手上路成长任务编辑入门编辑规则本人编辑我有疑问内容质疑在线客服官方贴吧意见反馈投诉建议举报不良信息未通过词条申诉投诉侵权信息封禁查询与解封©2025 Baidu 使用百度前必读 | 百科协议 | 隐私政策 | 百度百科合作平台 | 京ICP证030173号 京公网安备11000002000001号window.PAGE_DATA= 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40CrMnMo 40CrMnMo，执行标准:GB/T3077-1999统一数字代号:A34402。以热处理(正火、退火或高温回火)或不热处理状态交货，交货状态应在合同中注明。本词条 无基本信息模块, 欢迎各位 编辑词条，额外获取5个金币。目录1化学成分2钢厂现货规格3重量计算公式折叠编辑本段化学成分质量分数(%):40CRMNMO圆钢40CRMNMO圆钢C:0.37~0.45Si:0.17~0.37Mn:0.90~1.20Cr:0.90~1.20Mo:0.20~0.30[1]