Aircraft Alloys / HY-TUF VAC MELT N&T

HyTuf Vac Melt Normalized & Tempered is a high strength alloy with the addition of Molybdenum to further improve the steels toughness properties. This material is Vacuum Arc Remelted offering a much cleaner steel that meets the magnetic particle test requirements of AMS-2300. This alloy provides good ductility, fracture toughness, and impact strength. The Normalized & Tempered condition offers optimal machinability before heat treat. HyTuf is typically used in products that require a 220 to 240 ksi tensile strength range. This alloy is often used for aircraft landing gears, flap tracks and other structural applications within the aerospace industry. (UNS K32550)

Chemical Makeup

Element Min Max
Carbon, C 0.23 0.28
Manganese, Mn 1.2 1.5
Silicon, Si 1.3 1.7
Phosphorus, P - 0.025
Sulfur, S - 0.025
Chromium, Cr 0.2 0.4
Molybdenum, Mo 0.35 0.45
Nickel, Ni 1.65 2
Copper, Cu - 0.35

Common Applications

  • Aerospace Aerospace
  • Defense Defense


  • High Strength
  • Good Ductility
  • Fracture Toughness
  • Impact Strength
  • Good Machinability

We stock HY-TUF VAC MELT N&T to the following specifications:

  • AMS-2300
  • AMS-6418 CHEM ONLY
  • AMS-6425
  • AMS-S-7108
  • DMS-1841 GRD A
  • MIL-S-7108

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

Subscribe now!

Stay up to date with the latest on Fry Steel and industry news.