TA8 Titanium

Update : 2026-02-25

TA8 Titanium
TA8 is a near-alpha titanium alloy with additions of aluminum, tin, zirconium, and silicon, designed for moderate-to-high temperature service. It features high specific strength, good creep resistance, and excellent thermal stability up to 500°C. The alloy offers good weldability, formability, and fatigue performance, along with reliable corrosion resistance in oxidizing and chloride environments. With stable mechanical properties under long-term elevated temperature conditions, TA8 is widely used in aerospace, gas turbine components, and high-temperature structural parts requiring durable performance.
Equivalent Grade

Chinese Standard: TA8 / Ti-5Al-2.5Sn-0.5Zr-0.1Mo

UNS R54520

W.Nr.: 3.7065

Standard

● Sheet/Plate: GB/T 3621

Bar: GB/T 2965

Pipe/Tube: GB/T 3624

ASTM B265, ASTM B348, ASTM B338

Alloy TypeNear-Alpha Titanium Alloy (Ti-Al-Sn-Zr-Mo Alloy, Medium-High Temperature Corrosion-Resistant Type)
StandardSheet, Bar, Pipe, Tube, Forgings, High-Temperature Heat Exchanger Components, Aerospace Medium-Temperature Components
Key Properties

● Excellent medium-high temperature performance, long-term service temperature up to 550℃, creep strength superior to TA7, extremely stable microstructure

Added zirconium and molybdenum significantly improve oxidation resistance and corrosion resistance, resistant to seawater, chloride-containing media and weak acid-base corrosion

Balanced mechanical properties, high strength, good toughness, no stress corrosion cracking tendency, excellent low-temperature performance

Good processability, weldable and hot-formable, no complex heat treatment required after welding, and corrosion resistance remains stable

Applicable EnvironmentAerospace medium-high temperature scenarios, military aircraft components, high-temperature heat exchangers, medium-high pressure chemical environments, marine engineering medium-temperature working conditions
Typical ApplicationsAero-Engine Compressor Blades, Exhaust System Components, Airframe High-Temperature Components, High-Temperature Heat Exchanger Tubes, Chemical Medium-Temperature Reaction Equipment, Marine Engineering Medium-Temperature Pipe Fittings, etc.


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