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BEARING STEEL BEING EXCELLENT BOTH IN POST SPHEROIDIZING-ANNEALING WORKABILITY AND IN POST QUENCHING-TEMPERING HYDROGEN FATIGUE RESISTANCE PROPERTY
BEARING STEEL BEING EXCELLENT BOTH IN POST SPHEROIDIZING-ANNEALING WORKABILITY AND IN POST QUENCHING-TEMPERING HYDROGEN FATIGUE RESISTANCE PROPERTY
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机译:轴承钢在后喷镀-退火可加工性和后淬火-回火的氢疲劳性能中均表现出色
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摘要
Provided is bearing steel excellent in post spheroidizing-annealing workability and in post quenching-tempering hydrogen fatigue resistance property. The bearing steel has a chemical composition containing, by mass %: 0.85% to 1.10% C; 0.30% to 0.80% Si; 0.90% to 2.00% Mn; 0.025% or less P; 0.02% or less S; 0.05% or less Al; 1.8% to 2.5% Cr; 0.15% to 0.4% Mo; 0.0080% or less N; 0.0020% or less O; and the balance being Fe and incidental impurities, to thereby effectively suppress the generation of WEA even in environment where hydrogen penetrates into the steel, so as to improve the rolling contact fatigue life and also the workability such as cuttability and forgeability of the material.
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