ISO 683 part 17 specifies the Heat-Treated steels，alloy steels and free-cutting steels- Ball and roller bearing steels. According to the heat treatment and application, the standard divides bearing steels into five categories: fully quenched bearing steels, surface quenched bearing steels, induction quenched bearing steels, stainless bearing steels and high-temperature bearing steels. British, French and German bearing steel standards are all equivalent to ISO 683-17. While the American standard classified the bearing steel as: high carbon anti-wear bearing steel ASTM A295 / A295-14, high hardenability anti-wear bearing steel ASTM A485-17, carburized anti-wear bearing steel ASTM A534-17, stainless anti-wear bearing steel ASTM A756-17 and medium carbon anti-wear bearing steel ASTM A866-14.
ASTM Bearing Steel Standards
Standards | Type | Materials |
ASTM A295 | High carbon anti-friction bearing steel | 5195 5090M 1070M 5160 |
ASTM A485 | High hardenability anti-friction bearing steel | Gr1 Gr2 Gr3 Gr4 100CrMnSi4 100CrMnSi6 100CrMoSi7 100CrMnMoSi8-4-6 |
ASTM A756 | Stainless anti-friction bearing steel | 440C X30CrMnN15 X47Cr14 X65Cr14 X108CrMo17 X89CrMoV18 |
ASTM A534 | Carburized anti-friction bearing steel | 4118H, 4320H, 4620H, 4720H, 4817H, 4820H, 5120H, 8617H, 8620H, 9310H, 20Cr3H, 17MnCr5H, |
ASTM A866 | Medium carbon anti-friction bearing steel | 1030, 1040, 1050, 1541, 1552, 4130, 4140, 4150, 5140, 5150, 6150, 56Mn4, 43CrMo4 |