Baoshan Iron & Steel Co., Ltd.

Xiangjiang Liu

Zongze Huang

Genjie Wan

Yingtie Xu

Yanfeng Qi

A sucker rod steel, a heat treatment process therefor, and a manufacturing method comprising the heat treatment process are provided. The sucker rod steel comprises, in mass percent, the following chemical elements: C: 0.10&#x2dc;0.20%, Si: 0.40&#x2dc;0.80%, Mn: 0.20&#x2dc;0.60%, Mo: 0.36&#x2dc;0.46%, Cr: 6.15&#x2dc;7.10%, Al: 0.015&#x2dc;0.035%, Nb: 0.02&#x2dc;0.06%, and N: 0.008&#x2dc;0.015%, with the balance being Fe and other inevitable impurities. The microstructure of the sucker rod steel is tempered martensite and nanoscale precipitates. The grain size is higher than grade 10, the tensile strength is 920&#x2dc;1320 Mpa, and the AKU2 impact energy is greater than or equal to 180 J.

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Shanghai, China

Xiangjiang Liu