40crnimoa无缝钢管 40CrNiMoA钢管

40crnimoa无缝钢管  40CrNiMoA钢管

40crnimoa无缝钢管  40CrNiMoA钢管

40crnimoa无缝钢管  40CrNiMoA钢管

40crnimoa无缝钢管  40CrNiMoA钢管

标准品国标AISIJIS材料40CrNiMoA4340SNCM439（SNCM8）C0.37〜0.440.38〜0.430.36〜0.43硅0.17〜0.370.15〜0.350.15〜0.35锰0.50〜0.800.60〜0.800.60〜0.90P≤0.025≤0.035≤0.030小号≤0.025≤0.040≤0.030铬0.60〜0.900.70〜0.900.60〜1.00你1.25〜1.651.65〜2.001.60〜2.00莫0.15〜0.250.20〜0.300.15〜0.30

40CrNiMoA合金钢力学性能

屈服强度：≥835MPa

拉伸强度：≥980MPa

伸长率：≥12％

面积缩小率：≥55％

冲击吸收能量：≥78 J