General Characteristics of Titanium Ti-4Al-3Mo-1v

Titanium Ti-4Al-3Mo-IV is a heat-treatable sheet alloy that offers exceptional strength, creep and stability up to 900°F (482°C). The alloy will not corrode from salt or atmospheric environments and provides room temperature tensile strength of 185000psi minimum

Chemical Composition of Titanium Ti-4Al-3Mo-1v

  • Aluminum 3.75-4.75
  • Molybdenum 2.50-3.5
  • Vanadium 0.75-1.25
  • Nitrogen 0.05 max
  • Hydrogen 0.15 max
  • Iron 0.25 max
  • Carbon 0.08 max
  • Titanium balance

Heat Treatment of Titanium Ti-4Al-3Mo-1v

  • Anneal by holding at 1300° to 1400°F (704° to 760°C) for 30 minutes before gradual cooling
  • For stress relief, heat at 900° to 1100°F (482° to 593°C) before air cooling
  • For solution treatment, hold at 1600° to 1650°F (871° to 899°C) for 15-30 minutes, then water quench
  • For aging treatment, follow solution treatment by reheating and holding at 925°F (496°C) for 6-12 hours

Applications of Titanium Ti-4Al-3Mo-1v

  • Aircraft industry, including internal structures, stiffeners and skins on airframes

Machinability of Titanium Ti-4Al-3Mo-1v


  • Rigid machine setups
  • Good coolant
  • Sharp tools
  • Heavy feeds
  • Slow speeds
  • Straight tungsten carbide grades and cobalt high speed steels perform satisfactorily
  • Use water-based or chemical cutting fluids

Workability of Titanium Ti-4Al-3Mo-1v

  • Aged and solution-treated sheets can be bent, wrapped and jogged at room temperature
  • Use annealed alloy when performing extensive hot forming above 1100°F (593°C)
  • Achieve top formability and smallest bend radius with solution-treated alloy
  • Aged and solution-treated alloy appropriate for minimal forming


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