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ALLOYS

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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