F22
F-22 MOD (2-1/4CR-1MO): ASTM A-29, ASTM A-182, & API SPEC 6A
GENERAL SCOPE:
F-22 Mod is a low alloy steel predominately used in wellhead applications as an upgrade over AISI 4130. It is a very deep hardening, heat treatable alloy steel that contains nominally .12% Carbon, with 2.25% Chromium and 1.0% Molybdenum as the primary hardening elements.
ADDITIONAL INFORMATION:
The popularity of this grade stems from its improved weldability over 4130 while maintaining good strength and excellent impact properties deeper into the product.
CHEMICAL COMPOSITION:
C | Mn | P | S | Si | Cr | Mo | |
---|---|---|---|---|---|---|---|
Minimum | 0.100 | 0.450 | 0.150 | 2.000 | 0.900 | ||
Maximum | 0.150 | 0.600 | 0.020 | 0.015 | 0.350 | 2.500 | 1.100 |
COMMONLY STOCKED STRENGTH LEVELS:
80,000 psi or 85,000 minimum yield - limited to a Rockwell C -22 maximum for compliance NACE MR-01-75/ISO 15156 (for use in hydrogen sulfide environments)
Annealed or As-rolled - no mechanical properties; suitable for further heat treatment
COMMONLY STOCKED MATERIAL FORMS:
Rolled bar
Forged bar
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