Alloy 422 Stainless Steel Bar - AMS 5655
Alloy 422 stainless bar is a hardenable, martensitic stainless steel designed for service temperatures as high as 1200 F. This grade develops high mechanical properties via heat treatment and offers good scaling and oxidation resistance. Typical applications have included buckets and blades in steam turbines, high temperature bolting and valve and valve trim.
422 Inventory Size Ranges
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Standard Inventory Specifications
- UNS S42200
- AMS 5655
- ASTM A 176
- ASTM A 565
- AMSE SA 176
- B50A951 A1
- B50A951 A2
- AISI 636
Common Trade Names
- 422 Stainless
- Alloy 422
- 422
Common Applications of 422
- Power generation
- Compressors
- Steam turbines
- Aircraft parts
- High-temperature bolting
Chemical Composition
| Element | Percent by Weight | |
|---|---|---|
| C | Carbon | 0.20 - 0.25% |
| Cr | Chromium | 11.50 - 13.50% |
| P | Phosphorus | 0.040% max |
| Mo | Molybdenum | 0.75 - 1.25% |
| S | Sulfur | 0.030% max |
| W | Tungsten | 0.75 - 1.25% |
| Si | Silicon | 1.00% max |
| V | Vanadium | 0.20 - 0.50% |
| Mn | Manganese | 1.00% max |
| Fe | Iron | Balance |
Physical Properties of 422 Stainless Steel
|
Density |
Heat Treatment |
Hardening |
|---|---|---|
|
0.280 lb/cubic inch |
Heat treatment is sensitive as the alloy is very susceptible to cracking |
In the annealed condition, typical hardness is Rc 21/25. In the quenched and tempered condition, hardness is typically Rc 45/50. |
Mechanical Properties of 422 stainless steel
422 bar is readily machinable in the annealed condition with machining characteristics similar to those of alloy 420 stainless steel.
*The technical data provided is for information only and not for design purposes. It is not warranted or guaranteed.