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ASTM A182 F61 Steel is a forging material specification for 61 grade stainless steel, primarily used for manufacturing bare forgings or forged and machined products for high-temperature service. This specification covers requirements such as chemical composition, mechanical properties, heat treatment, and other supplementary requirements for 61 stainless steel rod forgings and forged products.
The chemical composition of F61 Steel is outlined in the following table:
| Element | Content (%) |
|---|---|
| Carbon | 0.040 max |
| Manganese | 1.50 max |
| Phosphorus | 0.040 max |
| Sulfur | 0.030 max |
| Silicon | 1.00 max |
| Nickel | 4.5 - 6.5 |
| Chromium | 24.00 - 27.00 |
| Molybdenum | 2.9 - 3.9 |
| Copper | 1.50 - 2.50 |
| Grade | UNS | EN/DIN | JIS |
|---|---|---|---|
| F61 | UNS S32550 | 1.4507 | - |
| Temperature (ºC) | 100 | 200 | 300 |
|---|---|---|---|
| Linear expansion coefficient (* 10⁻⁶ K⁻¹) | 13.0 | 13.5 | 14.0 |
| Modulus of elasticity (GPa) | 194 | 186 | 180 |
| Yield point Rp0.2 (MPa) | >450 | >400 | - |
F61 stainless steel offers excellent corrosion resistance and mechanical strength, making it ideal for harsh environments:
