Pyrowear® 53 Bar AMS 6308
Pyrowear® 53 is a double vacuum melted premium alloy steel. It is a carburizing gear steel and exhibits a strong fatigue resistance, toughness and deep hardenability.
Stock sizes: 1.500” to 7.000” diameter
Common Specifications:
- AMS 6308
- PWA-S-6308
- Sikorsky SS9707
- Boeing HMS 6-1288
- Boeing HP 4-1
- Bell 299-947-334
Common Applications:
- Jet engine gearboxes
- Rotorcraft
Average Grain size per ASTM No. 6 or finer per ASTM E112.
Composition
| Element | Min. | Max. |
|---|---|---|
| Carbon | 0.07 | 0.13 |
| Manganese | 0.25 | 0.50 |
| Silicon | 0.60 | 1.20 |
| Phosphorus | — | 0.015 |
| Sulfur | — | 0.010 |
| Chromium | 0.75 | 1.25 |
| Nickel | 1.60 | 2.40 |
| Molybdenum | 3.00 | 3.50 |
| Copper | — | 0.35 |
| Vanadium | 0.05 | 0.15 |