AF-9628

AF-9628 is a high-strength, high-performance low alloy steel developed by the US Air Force. It develops a good combination of strength and toughness at -40°F without the use of high cost alloying elements.

Type Analysis

  • Carbon (Nominal) 0.28
  • Phosphorus (Maximum) 0.015
  • Silicon (Maximum) 1.25
  • Nickel (Maximum) 3
  • Manganese (Maximum) 1
  • Sulfur (Maximum) 0.02
  • Chromium (Nominal) 2.5
  • Molybdenum (Nominal) 1
  • Iron (Nominal) Balance
  • Calcium (Maximum) 0.02
  • Aluminum (Maximum) 0.025
  • Copper (Maximum) 0.15
  • Nitrogen (Nominal) 0.15 max
  • Vanadium (Nominal) 0.2

Applications

pressure vessels, hydraulic or mechanical press components, aircraft frame and landing gear components, tooling, bridge structural components, missile cases, armor plating.

Applicable Specifications

Billet

Rounds

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