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15CrMn,是中国国家标准规定的一种合金结构钢的牌号。统一数字代号:A22152。<br style="margin: 0px; padding: 0px;" />
标准:GB/T 3077-1988 <br style="margin: 0px; padding: 0px;" />
JIS G4053:2003<br style="margin: 0px; padding: 0px;" />
A29M:2005<br style="margin: 0px; padding: 0px;" />
ISO 683-18:1996<br style="margin: 0px; padding: 0px;" />
化学成分质量分数(%):<br style="margin: 0px; padding: 0px;" />
碳 C :0.12~0.18 <br style="margin: 0px; padding: 0px;" />
硅 Si:0.17~0.37 <br style="margin: 0px; padding: 0px;" />
锰 Mn:1.10~1.40 <br style="margin: 0px; padding: 0px;" />
硫 S :允许残余含量≤0.035 <br style="margin: 0px; padding: 0px;" />
磷 P :允许残余含量≤0.035 <br style="margin: 0px; padding: 0px;" />
铬 Cr:0.40~0.70 <br style="margin: 0px; padding: 0px;" />
镍 Ni:允许残余含量≤0.030 <br style="margin: 0px; padding: 0px;" />
铜 Cu:允许残余含量≤0.030</div>
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<span style="margin: 0px; padding: 0px; outline: 0px; font-size: 20px; color: rgb(34, 34, 34); font-family: 'microsoft yahei', Arial, Helvetica, sans-serif;">力学性能</span>折叠<span style="margin: 0px; padding: 0px; outline: 0px; font-size: 14px; line-height: 16px;">编辑本段</span></h2>
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【试样毛坯尺寸】<br style="margin: 0px; padding: 0px;" />
15mm<br style="margin: 0px; padding: 0px;" />
【热处理】<br style="margin: 0px; padding: 0px;" />
淬火加热温度(℃):880;冷却剂:油<br style="margin: 0px; padding: 0px;" />
回火加热温度(℃):200;冷却剂:水、空<br style="margin: 0px; padding: 0px;" />
【力学性能】<br style="margin: 0px; padding: 0px;" />
抗拉强度 σb (MPa):≥785(80) <br style="margin: 0px; padding: 0px;" />
屈服强度 σs (MPa):≥590(60) <br style="margin: 0px; padding: 0px;" />
伸长率 δ5 (%):≥12 <br style="margin: 0px; padding: 0px;" />
断面收缩率 ψ (%):≥50 <br style="margin: 0px; padding: 0px;" />
冲击功 Akv (J):≥47 <br style="margin: 0px; padding: 0px;" />
冲击韧性值 αkv (J/cm2):≥59(6) <br style="margin: 0px; padding: 0px;" />
布氏硬度(HBS100/3000)(退火或高温回火状态):≦179</div>
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