40crnimoa無縫鋼管? 40CrNiMoA鋼管

40crnimoa無縫鋼管? 40CrNiMoA鋼管

40crnimoa無縫鋼管? 40CrNiMoA鋼管

40crnimoa無縫鋼管? 40CrNiMoA鋼管

標準品國標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錳0.50?0.800.60?0.800.60?0.90P≤0.025≤0.035≤0.030小號≤0.025≤0.040≤0.030鉻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合金鋼力學性能

屈服強度：≥835MPa

拉伸強度：≥980MPa

伸長率：≥12％

面積縮小率：≥55％

沖擊吸收能量：≥78 J