Grade F22 is part of the ASTM A182 standard, which covers valves, flanges, fittings, and other components exposed to pressure and temperature conditions. This standard pertains to forged steel materials. Grade F22 falls under the category of forged steels.
The buyer is responsible for specifying the grade of items such as valves, fittings, flanges, etc., that need to be procured. This selection depends on the design requirements, operating conditions, mechanical properties, high-temperature specifications, or corrosion resistance characteristics.
All cast grades, such as 316, 316L, 304, 304L, F22, and others, must undergo appropriate heat treatment to meet design and chemical specifications.
Grade F22, categorized as forged steel, has the chemical properties detailed in the following table.
| Carbon % | Manganese % | silicon % | sulfur % | phosphorus % | Chromium % | Nickel % | Molybdenum columbium (niobium) % |
| 0.05-0.15 | 0.3-0.6 | 0.5 | 0.04 | 0.04 | 2-2.5 | …. | 0.87-1.13 |
همچنین خواص مکانیک گرید F22عبارت است از:
| TENSILE STRENGTH KSI (Mpa) | Yield strength ksi (Mpa) | Elongation in 2in. Or 50mm |
| 60 (415) | 30 (205) | 20 |
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