TA6 (Ti-5Al) Alpha Titanium Alloy

TA6 is a Chinese α-type titanium alloy based on the Ti-Al binary system with about 5 % aluminium (Ti-5Al), corresponding approximately to the Russian VT5 / Ti-5Al α alloy. It combines moderate strength, good ductility in the annealed condition, good corrosion resistance and good weldability, and is used for aerospace high-temperature structural parts and pressure-resistant chemical equipment.

Overview

• Material: TA6 — Ti-5Al α-type titanium alloy
• Approx. equivalent: Russian VT5 / Ti-5Al
• Available forms: Bar, plate, tube, forgings and custom profiles

Chemical Composition (wt%)

Other elements: each ≤ 0.10 %, total ≤ 0.40 %.

Physical Properties

Mechanical Properties

Key Features

• Moderate strength and good ductility in the annealed condition;
• Good corrosion resistance in a range of media;
• Good heat resistance, retaining stability below about 400 °C;
• Good weldability.

Fabrication & Heat Treatment

• Melting: vacuum arc remelting (VAR) for uniform composition and impurity control.
• Hot working: forged with a hold of about 1 h at around 1177 °C; working temperature not below 1010 °C; solution treatment after hot working.
• Cold working: cold rolled and cold drawn, with appropriate annealing after cold reduction.
• Welding: common fusion and resistance welding methods can be used; oxy-acetylene welding is not recommended. (The source's recommendation of AWS E/ER 630 filler is a stainless-steel consumable and does not apply to titanium — verify filler-metal selection.)
• Note: as an α-type alloy, TA6 is not normally strengthenable by solution treatment and ageing; annealing is the standard treatment. Verify the heat-treatment schedule against the mill certificate.

Typical Applications

• Aerospace: high-temperature aircraft structural parts such as engine compressor blades and discs; missile nose-cone shells and structural parts; welded components of conventional weapon systems;
• Chemical industry: reaction equipment and piping subject to pressure and corrosive environments.

For detailed datasheets, mill certificates (EN 10204 3.1) or inquiries on specific sizes and tolerances, please contact our sales & engineering team.