TA18 Titanium

Update : 2026-02-25

TA18 Titanium
TA18 (Ti‑3Al‑2.5V, ASTM Grade 9) is a near‑alpha titanium alloy with excellent cold formability and weldability. It offers higher strength than commercially pure titanium, low density, outstanding specific strength, and good corrosion resistance in seawater, chlorides, and mild corrosive environments. It features stable mechanical properties at room and moderately elevated temperatures, ideal for tubing and thin‑walled parts. Widely used in aerospace hydraulic/fuel lines, automotive components, and sports equipment, it balances processability and reliable performance.
Equivalent Grade

Chinese Standard: TA18 / Ti-3Al-2.5V

UNS R56320

W.Nr.: 3.7195

Standard

● Sheet/Plate: GB/T 3621

Bar: GB/T 2965

Pipe/Tube: GB/T 3624

ASTM B265, ASTM B348, ASTM B338

Alloy TypeAlpha-Beta Titanium Alloy (Ti-Al-V Alloy, High Strength and Toughness Type)
StandardSheet, Bar, Pipe, Tube, Fittings, Flange, Welding Materials, Forgings, Precision Pipes, Aerospace Precision Components
Key Properties

● High strength and excellent toughness, specific strength superior to ordinary pure titanium, balanced mechanical properties, not easy to brittle fracture

Excellent corrosion resistance, resistant to seawater, chloride-containing media and weak acid-base media, close to TC4

Good plasticity, excellent cold working performance, can be drawn, bent, stamped, and has good weldability

Non-magnetic, outstanding low-temperature toughness, stable performance at medium temperature (≤350℃), no complex heat treatment required

Applicable EnvironmentAerospace Precision Components, Marine Engineering, Medical Devices, High-End Equipment, Oil and Gas Extraction, Low-Temperature Working Conditions
Typical ApplicationsAerospace Conduits, Aircraft Hydraulic Pipes, Deep-Sea Detection Equipment Fittings, Orthopedic Implants, Oil and Gas Extraction Pipes, Precision Instrument Components, Low-Temperature Vessels, etc.


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