TA7 Titanium

Update : 2026-02-25

TA7 Titanium
TA7 (Ti-5Al-2.5Sn) is a near-alpha titanium alloy with medium strength, excellent thermal stability, and good creep resistance up to 450°C. It features low density, high specific strength, outstanding weldability, and good ductility. It offers reliable corrosion resistance in seawater, chlorides, and mild corrosive environments, and performs well at both elevated and cryogenic temperatures. Non-heat-treatable and used in annealed condition, it is widely used in aerospace, cryogenic systems, and high-temperature structural components.
Equivalent Grade

Chinese Standard: TA7 / Ti-5Al-2.5Sn

UNS R54400

W.Nr.: 3.7055

Standard

● Sheet/Plate: GB/T 3621

Bar: GB/T 2965

Pipe/Tube: GB/T 3624

ASTM B265, ASTM B348

Alloy TypeNear-Alpha Titanium Alloy (Ti-Al-Tin Alloy)
StandardSheet, Bar, Pipe, Tube, Forgings, Heat Exchanger Components
Key Properties

● High medium-temperature strength, superior creep rupture strength at 350-500℃ compared to TC4

Excellent oxidation resistance, long-term service temperature up to 600℃

Stable microstructure with good toughness

Good processability, suitable for welding and hot forming

Applicable EnvironmentMedium-high temperature aerospace scenarios, military aircraft components, heat exchangers, medium/high-pressure chemical environments
Typical ApplicationsAero-Engine Compressor Blades, Exhaust Systems, Airframe Frames, High-Temperature Heat Exchangers, Aerospace Fuel Lines, etc.


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