High-carbon, high-chromium anti-friction bearing steels
GCr15 vs 52100, 100Cr6 and SUJ2 are all types of bearing steel they are similar in chemical composition and properties.
The following tables provide an overview of GCr15 equivalent to 52100, 100Cr6 (1.3505) and SUJ2 Steel .
Table 1, Chemical Composition Comparison
| Chemical composition % | |||||||||||||
| Country | Standard | Steel Grade | W | Yes | Mn | Cr | Mo ≤ | Ni ≤ | Cu ≤ | P ≤ | S ≤ | Oh ≤ | Al ≤ |
| China | GB/T 18254 | GCr15 | 0.95 to 1.05 | 0.15 to 0.35 | 0.25 to 0.45 | 1.40 to 1.65 | 0.10 | 0.25 | 0.25 | 0.025 | 0.020 | 0.0012 | 0.05 |
| USA | AISI SAE, ASTM A295/A295M | 52100 | 0.93 to 1.05 | 0.15 to 0.35 | 0.25 to 0.45 | 1.35 to 1.60 | 0.10 | 0.25 | 0:30 | 0.025 | 0.015 | 0.0015 | 0.05 |
| European Union | EN ISO 683-17 | 100Cr6 (1.3505) | 0.93 to 1.05 | 0.15 to 0.35 | 0.25 to 0.45 | 1.35 to 1.60 | 0.10 | – | 0:30 | 0.025 | 0.015 | 0.0015 | 0.05 |
| Germany | DIN EN ISO 683-17 | 100Cr6 (1.3505) | 0.90 to 1.05 | 0.15 to 0.35 | 0.25 to 0.45 | 1.35 to 1.65 | 0.10 | – | 0:30 | 0.025 | 0.015 | 0.0015 | 0.05 |
| Japan | JIS G4805 | SUJ2 | 0.95 to 1.10 | 0.15 to 0.35 | ≤ 0.50 | 1h30 to 1h60 | 0.08 | 0.25 | 0.25 | 0.025 | 0.025 | – | – |
Table 2, Brinell Hardness, (Annealed)
| Country | Standard | Steel Grade | Hardness (HBW) |
| China | GB/T 18254 | GCr15 | 179 – 207 |
| USA | AISI SAE, ASTM A295/A295M | 52100 | 207 |
| European | EN ISO 683-17 | 100Cr6 | 207 |
| Germany | DIN EN ISO 683-17 | 100Cr6 | 207 |
| Japan | JIS G 4805 | SUJ2 | ≤ 201 |
Tag: GCr15 versus 100Cr6 , GCr15 versus SUJ2
