9310 VAR AMS 6265
Rockwell Industries 9310 alloy steel is a low alloy carburizing steel based primarily in nickel and chromium and known for its hardenability and strength. 9310 supplied by Rockwell Industries also possesses solid ductility, weldability, and machinability properties.
Common stock sizes: 1.00” to 12.00” diameters.
Common Specifications:
- AMS 6265; AMS 6260; AMS 6267; AMS 6279
- EMS 56279; EMS 56280
- Bell 299-947-032 Except Hardness
- Pratt & Whitney LCS F-17
- General Electric S-400 / S-1000
Industry Trade Names:
- 9310 VAR
- SAE 9310
- AISI 9310
- 10NiCrMo13-5
Common Applications:
- Aircraft engine gears and shafts
- Piston pins
VAR melting practice. Bars ordered as hot finished shall not have a hardness greater than 229 HBW.
Bars ordered cold finished shall not have a hardness greater than 248 HBW.
Composition
| Element | Min. | Max. |
|---|---|---|
| Carbon | 0.07 | 0.13 |
| Manganese | 0.40 | 0.70 |
| Silicon | 0.15 | 0.35 |
| Phosphorus | -- | 0.015 |
| Sulfur | -- | 0.015 |
| Chromium | 1.00 | 1.40 |
| Nickel | 3.00 | 3.50 |
| Molybdenum | 0.08 | 0.15 |
| Boron | -- | 0.001 (10 ppm) |
| Copper | -- | 0.35 |
Macrostructure Limits:
| Class | Condition | Severity |
|---|---|---|
| 1 | Freckles | A |
| 2 | White Spots | A |
| 3 | Radial Segregation | B |
| 4 | Ring Pattern | B |
Average grain size of ASTM No. 5 or finer.
Jominy hardness 41 HRC maximum at 1/16 inch and 32 HRC minimum at 6/16 inch.