Overview
SUJ2 (AISI 52100 / 100Cr6) is a high-carbon chromium steel developed for rolling bearings. After quenching and low tempering it reaches HRC 60–64 with outstanding wear and rolling-contact fatigue resistance.
It is machined in the spheroidized-annealed state and hardened afterwards.
Key Properties
Typical values from the MatWeb datasheet for AISI E 52100 Steel (100Cr6, SUJ2, UNS G52986). Machined parts take the properties of the stock they are cut from.
| Property | Value |
|---|---|
| Density | 7.81 g/cm³ |
| Hardness | HRC 62 |
| Modulus of elasticity | 210 GPa |
| Thermal conductivity | 46.6 W/m-K |
| Machinability | 40 % |
Typical Applications
- Guide pins and bushings
- Bearing races and rollers
- Gauges and measuring tools
- Precision wear parts
Machining Notes
Final dimensions on hardened surfaces are usually ground; please indicate which features need grinding.
