化学成分[化学成分](质量分数)(%)碳(c):0.42~0.49硅(SI):0.17~0.37锰(MN):0.50~0.80硫:允许残留量≤ 0.035磷P:允许残留量≤ 0.035铬(CR):0.80~1.10镍镍:允许残留量≤ 0.030铜铜:允许残留量≤ 0.030机械性能[机械性能]样品空白尺寸(mm):30热处理:****次淬火加热温度(℃):840;冷却液:机油第二次淬火加热温度(℃):-回火加热温度(℃):520;冷却液:水、油抗拉强度σb(MPa):≥1030(105)屈服强度σs(MPa):≥835(85)伸长率δ5(%):≥ 9断面收缩率ψ(%):≥40冲击能量Akv(J):…
合金管
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