K-310, SAE 52100 steel ball bearing steel
K-310, SAE 52100 steel ball bearing steel
Specification
52100 bearing steel is one kind of special steel with features of high wear resistance and rolling fatigue strength. High-carbon chromium bearing steel, engineering steel and some types of stainless steel and heat resistant steel are used as materials of bearings and for other purposes.
Application
Alloy steel 52100 grade bearing steel is mainly used for the manufacture of aircraft bearings and other highly stressed parts. This steel grade 52100 steel is preferably vacuum arc re-melted to give optimum performance. Typical use in Bearing Manufacture, CV joints, ball screws, gauges, knife etc.
Chemical Analysis %
| C | Mn | Cr | Si | P | S |
|---|---|---|---|---|---|
| 0.90-1.20 | 0.25-0.75 | 1.00-1.60 | 0.10-0.40 | 0.040 Max | 0.040 Max |
Delivery condition
Annealed 240 HB max
Heat Treatment
Annealed 240 HB max
Heat Treatment
| Soft Annealing | Cooling | Stress Relieving | Hardening | Quenching | Hardness after quenching HRC |
|---|---|---|---|---|---|
| 780°-800°C | Furnace | 610°-650°C | 800°-820°C | Air, oil 790°-810°C | 61 |
Tempering °C
| Tempering°C | 100 | 200 | 300 | 400 | 500 | 600 | 700 |
|---|---|---|---|---|---|---|---|
| HRC | 61 | 60 | 60 | 59 | 59 | 58 | 57 |