30CrMo钢;铬钼合金钢,这种钢在中国是一种合金钢,30是指碳含量,用它来制造10.9s、8.8s高强度螺栓。但使用前必须通过测试,确认其成分含量后才能放心使用。中国品牌30CrMO相当于日本SCM430。机械性能;抗拉强度(σB/MPa):≥930屈服点(σS/MPa):≥785断后伸长率(δ5/%):≥12断面收缩率(ψ/%):≥50冲击吸收功(Aku2/J):≥63布氏硬度(HBS100/3000)(退火或高温回火状态)≤229
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