GCr15 Steel — Specifications & Listings
GB/T 18254 — Chinese bearing steel, equivalent to 52100/EN31
Grade Details
| Grade | GCr15 |
| Standard | GB/T 18254 |
| Description | Chinese bearing steel, equivalent to 52100/EN31 |
| Applications | Ball bearings, roller bearings, bearing races |
Equivalent / Similar Grades
Chemical Composition (%)
| C |
Si |
Mn |
Cr |
S |
P |
| 0.95–1.05 |
0.15–0.35 |
0.25–0.45 |
1.40–1.65 |
≤0.020 |
≤0.025 |
Mechanical Properties
| Hardness HRC (hardened) |
60–66 |
| Hardness HB (annealed) |
≤179–207 |
Typical Available Sizes
| Round Bar |
6mm–150mm dia |
| Flat Bar |
15×5mm–100×25mm |
Sizes are indicative. Contact seller for exact availability.
Active GCr15 Listings on M-EX