【国家标准】 渗碳轴承钢

This standard specifies the classification and designation,ordering information,dimensions and shape,technical requirements,test methods,inspection rules,packaging,marking and quality certificate of carburizing steels for bearing.
This standard is applicable to carburizing steels for bearing in the form of hot-rolled,hot-forged,cold-drawn and bright round bars (hereinafter referred to as steel bars) to be used in the manufacture of bearing rings and rolling bodies.
Upon agreement between the manufacturer and purchaser,steel bars with other grades and dimensions,which are not listed in this standard,may also be supplied;and the specific requirements should be indicated in the contract.