GCr15 is a commonly used high-carbon chromium bearing steel with less alloy content, which has high hardenability and can obtain high and uniform hardness after heat treatment. Such as the ball screw of the machine tool, the nozzle of the turbojet nozzle, the plunger, the valve, the bushing, etc.
GCr15 bearing tempering chemical composition
| C | Cr | Mo | Ni+Cu |
| 0.95-1.05 | 1.40-1.65 | ≤0.10 | ≤0.50 |
| Si | Mn | S | P |
| 0.15-0.35 | 0.25-0.45 | ≤0.025 | ≤0.025 |
GCr15 bearing steel use:
For the production of various bearing rings and rolling parts, such as: the production of internal combustion engines, electric locomotives, automobiles, tractors, machine tools, rolling machines, drilling machines, mining machinery, general machinery, as well as high-speed rotating high-load mechanical transmission bearings of steel balls, rollers and rings. In addition to making balls, bearing rings, etc., it is sometimes used to make tools, such as punching dies and measuring tools.
