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

Ti-6-2-4-6 is a stronger derivative of Ti- 6-2-4-2 offering higher strength, depth hardenability and elevated temperature properties up to 450°C. This alloy has high strength and excellent creep characteristics. This alloy is similar in forgeability and crack sensitivity to Ti-6Al-4V.

It can be heat treated to higher strengths in greater section sizes than Titanium 6Al-4V (Titanium Grade 5) with excellent corrosion resistance. It is frequently used in applications where high strength and light weight are needed along with good corrosion resistance.

As in other titanium alloys, Ti-6-2-4-6 has high level of corrosion resistance based on the existence of a consistent and continuous oxide layer which is formed spontaneously upon exposure to oxygen. In addition, due to its approximate 6% molybdenum content, Ti 6246 has excellent resistance to corrosion in reducing environments such as Hydrogen Sulfide (H2S). It has excellent resistance to corrosion in seawater making it a good choice for use in offshore and subsea oil and gas operations where seawater corrosion and weight are concerns. Ti-6-2-4-6, like other titanium alloys, has a modulus of elasticity of 107 Gpa (15.5 x 103 ksi), roughly half that of carbon steels.

Chemical composition of Ti-6Al-2Sn-4Zr-6Mo (%, max.)

Available forms

Forging

Plate and sheet

Rod and bar

Specification

AMS 4981

MIL-T-9046, MIL-T-9047

Typical application

Gas turbine engine components

High performance racing engine components

Oil & gas production equipment