ASTM A182 F22 is a forging material specification for F22 1 grade alloy steel, and it's used to make naked forgings, as well as forged and machined products, for high-temperature applications. Astm a182 f22 forged bolts, screws, nuts, studs, threaded rods, and similar fasteners or bolting parts are available from Hastelloy Bolts China.
Chemical composition, mechanical characteristics, heat treatment, and other extra criteria for F22 alloy steel forgings and forged products are covered by the ASTM A182 specification.
| Grade Symbol | UNS Number | Alloy | Elements | Composition % |
|---|---|---|---|---|
| F22 Class 1 | K21590 | chromium-molybdenum | Carbon | 0.05 - 0.15 |
| Manganese | 0.30 - 0.60 | |||
| Phosphorus | 0.040 | |||
| Sulfur | 0.040 | |||
| Silicon | 0.50 | |||
| Chromium | 2.00 - 2.50 | |||
| Molybdenum | 0.87 - 1.13 |
| Property | Value |
|---|---|
| Tensile Strength, min, ksi [MPa] | 60 [415] |
| Yield Strength, min, ksi [MPa] | 30 [205] |
| Elongation in 2 in. [50mm] or 4D, min, % | 20 |
| Reduction or Area, min, % | 35 |
| Brinell Hardness Number, HBW | 170 max |