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Industrial Bearing Grade
Bearing Steel EN 31/100Cr6 / SAE 52100
EN31 is a specialized high-carbon chromium alloy steel specifically developed for high-precision bearings and wear-critical components. It delivers exceptional surface hardness and anti-friction properties, making it the ideal choice for parts subject to heavy rolling contact and repetitive mechanical stress. Optimized for grinding and finishing, EN31 ensures maximum operational life for races, rollers, and precision spindles.
Key Features
- High hardness & abrasion resistance
- Excellent fatigue strength (rolling)
- Superior dimensional stability
- Fine-grained structure for finishing
- High compressive strength retention
Main Applications
- Ball & roller bearing races
- Precision spinning spindles
- Hardened wear sleeves & bushes
- Gauge blocks & measuring tools
- High-load guiding elements
International Standards Comparison
| DIN/WNr | EN Name | AISI | JIS | BS |
|---|---|---|---|---|
| 1.3505 | 100Cr6 | 52100 | SUJ2 | EN31 |
Chemical Composition (Typical Analysis in %)
| C | Si | Mn | Cr | P (max) | S (max) |
|---|---|---|---|---|---|
| 0.95-1.10 | 0.15-0.35 | 0.25-0.45 | 1.35-1.65 | 0.025 | 0.025 |
Material Properties
- Wear Life: Engineered for long-term resistance to abrasive wear.
- Edge Retention: High carbon content maintains structural integrity.
- Precision: Perfectly suited for hardened and ground components.