上海沣会工业科技有限公司
五金通钻石会员 第15年
已通过企业工商认证
公司服务热线
13918222239
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化学成份 碳 C ：1.45～1.70
硅 Si：≤0.40
锰 Mn：≤0.40
硫 S ：≤0.030
磷 P ：≤0.030
铬 Cr：11.00～12.50
镍 Ni：允许残余含量≤0.25
铜 Cu：允许残余含量≤0.30
钒 V ：0.15～0.30
钼 Mo：0.40～0.60
退火,255～207HB,压痕直径3.8～4.2mm;淬火,≥58HRC
