Ti-6AL-4V Titanium Alloy

The titanium alloy Ti-6AL-4V (also known as Ti6-4) is generally comprised of 88% – 90% of titanium (Ti), 6% aluminum (Al), and 4% of vanadium (V). Trace amounts of other components that make of Ti-6-4 would be nitrogen (N), carbon (C), oxygen (O), iron (Fe) and hydrogen (H). The UNS code for Ti6-4 is UNS R56400.

Ti6-4 forged parts are sought after for many applications because of their high tensile strength and for having a high resistance to many corrosive elements, especially against saltwater.

Chemical Composition
(%max., unless shown as range or min.)

Ti Al V N C O Fe H
Min./Max. 88.91 – 90 5.5 – 6.5 3.5 – 4.5 0.03 0.08 0.13 0.25 0.0125

Applicable Specifications 

Product Specification
Forgings – Annealed AMS 4928
Forgings – Solution, treated and aged AMS 4965
Forgings – Annealed, heat treatable AMS 4967

Common Fabrication Processes

  • Jet and engine rocket components
  • Pressure vessels
  • Fasteners
  • Shafts – Steps and Rotors
  • Hollow cylinders
  • Rings
  • Discs

Industries that Commonly use Ti-6AL-4V Forgings:

  • Aerospace and Aviation Engineering
  • Marine
  • Vertical Lifts / Helicopters