20NiCrMo2-2材料和20CrNiMo对比
ITEMstandard20NiCrMo2-2 EN 10084chemical composition化学成分CSiMnPSCrMoNi0.17-0.23≤0.40.65-0.95≤0.025≤0.0350.35-0.70.15-0.250.4-0.7mechanical properties机械性能sample diameter试样直径tensile strength抗拉强度 RmYield min 屈服强度 Rp0.2Break elongation 延伸率 AReduction of area收缩率 ZImpact strength 冲击功 Akv20℃φ16810-1160Mpa560Mpa9%25%φ15980Mpa785Mpa9%40%47J0.17-0.230.15-0.40.65-0.95≤0.035≤0.0350.3-0.650.15-0.250.4-0.70.17-0.230.17-0.370.6-0.95≤0.025≤0.0250.4-0.70.2-0.30.35-0.7520NiCrMo2ISO68320CrNiMoGB/T3077