ASTM A182 F55 is a forging material specification for stainless steel in the 55 grade that is used to make naked forgings, forged and machined products, and other high-temperature applications. Resistant Metal Alloys provides astm a182 f55 forged bolts, screws, nuts, studs, threaded rods, and other fasteners and bolting parts.
For 55 stainless steel forgings and forged products, the ASTM A182 specification covers chemical composition, mechanical characteristics, heat treatment, and other extra requirements.
| Identification Symbol | UNS Number | Grade | Elements | Composition % |
|---|---|---|---|---|
| F55 | S32760 | 25 chromium, 7 nickel, 3.5 molybdenum, modified with nitrogen and tungsten |
Carbon | 0.030 max |
| Manganese | 1.00 max | |||
| Phosphorus | 0.030 max | |||
| Sulfur | 0.010 max | |||
| Silicon | 1.00 max | |||
| Nickel | 6.00 - 8.00 | |||
| Chromium | 24.00 - 26.00 | |||
| Molybdenum | 3.00 - 4.00 | |||
| Copper | 0.50 - 1.00 | |||
| Nitrogen | 0.20 - 0.30 | |||
| Tungsten | 0.50 - 1.00 |
| Property | Value |
|---|---|
| Tensile Strength, min, ksi [MPa] | 109-130 [750-895] |
| Yield Strength, min, ksi [MPa] | 80 [550] |
| Elongation in 2 in. [50mm] or 4D, min, % | 25 |
| Reduction or Area, min, % | 45 |
| Brinell Hardness Number, HBW | -- |