9310 Aircraft Quality Metal

9310 is a vacuum degassed, carbonizing steel containing approximately 1.25% chromium, 3.25% nickel, and .12% molybdenum. This alloy is suitable for heavy sectioned components because of its high harden-ability and fatigue resistance, and because of its high core strength and hardness offering a narrow hardness range between light and heavy sections. It offers excellent ductility and toughness, and may be used without carbonizing. Most applications of 9310 do call for use in the carbonized state, which increases its wear and abrasion resistance to a high degree. It passes the most rigid magnetic particle inspections.

Used principally in the carbonized state where extreme core hardness is required in combination with a minimal hardness range.

Chemical Composition:

  • Carbon .08%
  • Molybdenum .12%
  • Manganese .45%
  • Silicon .20%
  • Chromium 1.25%
  • Nickel 3.25%
  • Phosphorus .025%
  • Sulfur .025%

    Typical Applications:

  • Mostly Aircraft and Spacecraft

Physical Properties

Density 0.284 lb/in³
Modulus of Elasticity 29 x 106 psi
Coefficient of Thermal Expansion, 68-212˚F, 6.83 x 10-6/˚F
Thermal Conductivity, Btu/ft hr 30˚F
Specific Heat, 0.114 Btu/lb
Electrical Resistivity, 6.42 Microhm-in