号牌号化学成份(%)机械性能金相***CSiMnCrMoNiCuSPak(J/cm2)HRCσъ(Mpa)1ZG30Cr5MoRE0.25~0.350.3~1.00.3~1.04.5~5.50.7~1.00.0450.045≥25≥45M+B+C2ZG40Cr5MoRE0.35~0.450.3~1.00.3~1.04.5~5.50.7~1.0≤0.045≤0.045≥20≥48M+B+C3ZG45Cr3NiMoMnRE0.40~0.500.3~0.80.6~1.22.0-3.20.3-0.50.5-1.00.040.04≥20≥50M+C4ZG90Cr6MoMn0.85~0.950.4~0.80.4~0.85-80.2-0.4≤0.040.04>7>50A+C5ZGMn131.1~1.40.3~1.011~140.060.09>147HB≤229637A+C6ZGMn13Cr21.1~1.40.3~1.011~141.5-2.50-0.50.060.08>80240A+C7ZGMn17Cr21.1~1.40.3~1.016~191.0-20Ti0.2-0.4≤0.06≤0.08>50260A+F)