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4130

AISI 4130: ASTM A-29, ASTM A-519, API 6A, & API 16C

 

GENERAL SCOPE:

4130 is a low alloy steel that is commonly used in the oil patch, predominately in wellhead applications. It is a heat treatable alloy steel that contains nominally .30% Carbon, with Chromium and Molybdenum as the primary hardening elements.

The popularity of this grade stems from its ability to be easily welded while maintaining good strength and impact properties.

Chemical Composition:

  C Mn P S Si Cr Mo
Minimum 0.280 0.400     0.150 0.800 0.150
Maximum 0.320 0.600 0.025 0.025 0.350 1.100 0.250

COMMONLY STOCKED STRENGTH LEVELS:

60,000 - 75,000 psi minimum yield - limited to a Rockwell C -22 maximum for compliance to NACE MR-01-75/ISO 15156 (for use in hydrogen sulfide environments).

Normalized, Annealed or As-rolled - no mechanical properties; suitable for further heat treatment

COMMONLY STOCKED MATERIAL FORMS:

Rolled bar
Forged bar/shapes
Seamless tubing