ASTM A182 F11 Class1 is a forging material specification for F11 grade alloy steel that is used to make naked forgings, forged and machined products, and other high-temperature applications. Astm a182 f11 forged bolts, screws, nuts, studs, threaded rods, and similar fasteners or bolting parts are available from Resistant Metal Alloys.
Chemical composition, mechanical characteristics, heat treatment, and other extra criteria for F11 alloy steel forgings and forged products are covered by the ASTM A182 specification.
| Grade Symbol | UNS Number | Alloy | Elements | Composition % |
|---|---|---|---|---|
| F11 Class 1 | K11597 | 1.25% chromium, 0.5% molybdenum |
Carbon | 0.05 - 0.15 |
| Manganese | 0.30 - 0.60 | |||
| Phosphorus | 0.030 max | |||
| Sulfur | 0.030 max | |||
| Silicon | 0.50 - 1.00 | |||
| Chromium | 1.00 - 1.50 | |||
| Molybdenum | 0.44 - 0.65 | |||
| F11 Class 2 | K11572 | 1.25% chromium, 0.5% molybdenum |
Carbon | 0.10 - 0.20 |
| Manganese | 0.30 - 0.80 | |||
| Phosphorus | 0.040 max | |||
| Sulfur | 0.040 max | |||
| Silicon | 0.50 - 1.00 | |||
| Chromium | 1.00 - 1.50 | |||
| Molybdenum | 0.44 - 0.65 |
| Property | Value |
|---|---|
| Grade | F11 Class 1 |
| 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, % | 45 |
| Brinell Hardness Number, HBW | 121-174 |
| Property | Value |
| Grade | F11 Class 2 |
| Tensile Strength, min, ksi [MPa] | 70 [485] |
| Yield Strength, min, ksi [MPa] | 40 [275] |
| Elongation in 2 in. [50mm] or 4D, min, % | 20 |
| Reduction or Area, min, % | 30 |
| Brinell Hardness Number, HBW | 143-207 |