Aermet 100 (UNS K92580) - Premium Super Alloy - Fry Steel

Super Alloy / AERMET 100

Aermet 100 is a premium aircraft-quality martensitic alloy produced with a multiple melt process using vacuum induction melting followed by vacuum arc remelting. This alloy is typically used for heat-treated parts requiring a combination of high hardness and strength combined with exceptional ductility and toughness. This material provides high fracture toughness and great resistance to stress corrosion cracking/fatigue up to 800 (427). Aermet 100 requires a minimum tensile strength of 280 KSI (1930 MPa). This product is weldable requiring no preheating. This grade is not a corrosion-resistant alloy, so it must be sealed if used in a moist environment. This alloy is often used to produce landing gears, armor, fasteners, actuators, jet engine shafts, drive shafts, and structural tubing. (UNS K92580)

Chemical Makeup of Aermet 100 Alloy

Element Min Max
Carbon, C 0.21 0.25
Manganese, Mg -- 0.1
Silicon, Si -- 0.1
Phosphorus, P -- 0.008
Sulfur, S -- 0.005
Phosphorus + Sulfur -- 0.01
Chromium, Cr 2.9 3.3
Nickel, Ni 11 12
Cobalt, Co 13 14
Molybdenum, Mo 1.1 1.3
Titanium, Ti -- 0.015
Aluminum, Al -- 0.015
Oxygen, O -- 0.002
Nitrogen, N -- 0.0015

Common Applications of Aermet 100 Alloy

  • Aerospace Aerospace
  • Industrial Industrial


  • High Strength
  • High Hardness
  • Good Ductility
  • Resistance To Stress Corrosion Fatigue

We stock AERMET 100 to the following specifications:

  • AMS-2300
  • AMS-6532
  • MIL-STD-2154 TYPE 1 CL A
  • MMS-217 EXC. SONIC

Click on a cross-section to see the sizes we stock:

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