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SUJ4AE9 SUJ2 JIS高碳铬轴承钢，本产品采用日本SUJ2轴承专用钢全硬处HRC58-61具备了轴承的耐磨性也加强了顶针钢性加工性。SUJ2特性：扁梢可直接加工成型使用模次高於SKD-61(HRC52)全硬体2-3倍。SUJ2用 途: 一般塑胶模具汽车机床轴承钢球滚子轴套冷轧