ASTM A295/A295M — Standard Specification for High-Carbon Anti-Friction Bearing Steel
Scope
High-carbon chromium bearing steels for balls, rollers and races: 52100 (and 51100, 50100, 5195, K19526, 1070M) as bar, rod, wire and tube. Specifies chemistry including oxygen ≤ 15 ppm, inclusion cleanliness (E45 method A/D limits), decarburization, macroetch, annealed hardness and microstructure; heat-treated properties are by agreement. Carburizing bearing steels are in A534.
Grades covered by ASTM A295
| Grade | No. | Type | C % | Yield MPa | Tensile MPa | Nearest equivalents |
|---|---|---|---|---|---|---|
| 52100 | G52986 | High-carbon chromium bearing steel | 0.93 – 1.05 | ≈ 450 | ≈ 680 | 100Cr6, SUJ2, GCr15 |
Revision history and superseded standards
| Year | Change |
|---|---|
| 1946 | First issued |
| 2021 | A295/A295M-21 — current |
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Related standards
ASTM A534EN ISO 683 17JIS G4805