德国40Mn4(1.1157)结构钢的化学成分：C碳：0.36-0.44Si硅:0.25-0.50Mn锰:0.80-1.10P磷:≤0.035S硫:≤0.035Cr铬:-Ni镍:--Mo:-B:-N:-●结构钢的热加工、热处理与力学性能1.热加工温度/℃:1100-8502.热处理温度/℃:A:退火:650-700℃B:正火:850-880℃C:淬火:820-850℃,水830-860,油D:回火:550-6603.退火后硬度HBW:2174.力学性能(热处理后,≥)尺寸/mm:≤16,17-40,41-100抗拉强度MPa:880-1080780-930690-830屈服强度MPa:635540440伸长率%:121415面收缩率%:404550冲击功J:344141上海隆继***现货库存40Mn4板材/圆棒/保证现货及材质,订货40Mn4总机021-37789590在库有蒂森克虏伯,宝钢,太钢,首钢等40Mn4/钢板,圆棒规格齐全.现货供应!http://，电子邮件：longjimetal@。上海隆继供应对应德国合金结构钢：|15NiCr13|16MnCr5|16MnCrS5|16NiCr4|17Cr3|17CrS3|17NiCrMo6-4|17NiCrMoS6-4|18CrMo4|18CrMoS4|18CrNiMo7-8|20NiCrMo2-2|20NiCrMoS2-2|20MnCr5|20MoCr3|20MoCrS3|20MoCr4|20MoCrS4|25CrMo4|25CrMoS4|28Cr4|28CrS4|30CrMoV9|30CrNiMo8|32CrMo12|34Cr4|34CrMo4|34CrMoS4|34CrNiMo6|34CrS4|36CrNiMo4|37Cr4|38Cr2|39NiCrMo3|41Cr4|41CrS4|42CrMo4|42CrMoS4|46Cr2|50CrMo4|51CrV4|14NiCrMo13-4|10NiCr5-4|16MnCrB5|17CrNi6-6|18NiCr5-4|20MnB5|20MnCrS5|20MnMoNi4-5|20NiCrMoS6-4|22CrMoS3-5|27MnCrB5-2|28NiCrMoV8-5|30MnB5|33MnCrB5-2|33NiCrMoV14-5|17CrNiMo6|36NiCrMo16|38MnB5|39MnCrB6-2|40CrMoV13-9|)