Ti-6Al-2Sn-4Zr-2Mo

The titanium alloy Ti-6AL-2Sn-4Zr-2Mo (also known as Ti-6-2-4-2) is generally comprised of 88% – 90% of titanium (Ti), 5.5 – 6.5% aluminum (Al), 1.8 – 2.2% tin (Sn), 3.6 – 4.4.% zirconium (Zr), and 1.8 – 2.2% molybdenum (Mo). 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 R54620.

Ti-6-2-4-2 forged parts are sought after for many applications because of their high tensile strength, overall toughness, and for having a high resistance to many corrosive elements, especially against saltwater.

Chemical Composition

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

TI AL Sn Zr Mo O FE H N C Si
Min./Max.
Balance
5.5-6.5
1.80-2.20
3.60-4.40
1.80-2.20
0.15 max
0.25 Max
0.0125 max
0.05 max
0.05 max
0.1 max

Applicable Specifications

Product Specification
Forgings - Bars and Rings, heat treated
AMS 4975
Forgings - Heat Treated
AMS 4976
Forgings - Bar and billet, heat treated
AMIL T-9047G

Common Fabrication Processes

  • Jet and engine rocket components
  • Turbines
  • Compressor Blades
  • Shafts – Steps and Rotors
  • Hollow cylinders
  • Rings
  • Discs
 

Industries that Commonly use Ti-6AL-2Sn-4Zr-2Mo Forgings:

  • Aerospace and Aviation Engineering
  • Marine
  • Oil and Gas
  • Power Generation