EN31 Bright Bar Manufacturer & Supplier
High carbon chromium bearing steel. Hardens to 62-64 HRC with a fine, uniform carbide structure, which is what lets a rolling element hold its form under contact stress for millions of cycles.
UNS: 535A99 / 100Cr6 | Category: Bearing Steel
Size Range
Outer Diameter: Diameter 6-120 mm · Round, square, hexagon & flat sections
Chemical Composition (%)
| C | Cr | Mn | Si | P |
|---|---|---|---|---|
| 0.95-1.10 | 1.30-1.60 | 0.30-0.75 | 0.10-0.35 | 0.03 max |
Mechanical Properties
- Tensile Strength
- 750 MPa (annealed)
- Hardness annealed
- 207 HB max
- Hardness hardened
- 62-64 HRC
- Elongation
- Not applicable in hardened condition
Applicable Standards
- EN ISO 683-17 (bearing steels)
- EN 10278 (dimensions & tolerances)
- ASTM A295
- BS 970 Part 3
- EN 10204 3.1 certification
Applications
- Bearing races & rollers
- Precision balls
- Punches & dies
- Gauges & mandrels
- Cam rollers
- Spindle components
Industries Served
- Bearings
- Automotive & Auto Components
- Textile Machinery
- Tool & Die
- General Engineering
- Pumps & Valves
Equivalent Grades
- AISI / SAE
- AISI 52100 / SAE 52100
- EN
- 100Cr6
- Werkstoff / DIN
- 1.3505
- JIS
- SUJ2