TA10 (Ti-0.3Mo-0.8Ni / ASTM Grade 12) Titanium Alloy

TA10 is a Chinese near-α titanium alloy of nominal composition Ti-0.3Mo-0.8Ni, corresponding to international ASTM Grade 12 / UNS R53400. Molybdenum and nickel additions give markedly better corrosion resistance in reducing acids and high-temperature chloride environments — including resistance to crevice corrosion — while offering a cost-effective alternative to palladium-bearing Grade 7.

Overview

• Material: TA10 — Ti-0.3Mo-0.8Ni near-α titanium alloy
• International equivalent: ASTM Grade 12 / UNS R53400
• Available forms: Bar, plate, sheet, tube, forgings and custom profiles

Chemical Composition (wt%)

Physical Properties

Mechanical Properties

Key Features

• Significantly better corrosion resistance than ordinary titanium in reducing acids and high-temperature chloride environments;
• Improved resistance to crevice corrosion;
• Good balance of strength and ductility;
• Good workability into a range of shapes.

Fabrication & Heat Treatment

• Melting: vacuum arc remelting (VAR) for uniform composition and consistent quality.
• Hot working: forged, rolled or extruded at 800–950 °C; control heating rate and hold time to avoid overheating / burning.
• Cold working: cold rolled and cold drawn with intermediate annealing to restore ductility.
• Welding: typically TIG welding; thoroughly clean the workpiece (oil, oxides) before welding and use suitable parameters / shielding to avoid defects.
• Annealing: 650–750 °C for 1–3 h, air or furnace cool. (Grade 12 is normally supplied in the annealed condition; solution treatment and ageing have only a limited effect on this near-α alloy — verify the intended heat treatment.)

Typical Applications

• Petrochemical: reaction towers, heat exchangers, piping and valves handling corrosive media;
• Marine engineering: desalination equipment and corrosion-resistant offshore-platform components;
• Shipbuilding: seawater piping systems and heat exchangers;
• Nuclear: nuclear-waste-treatment service.

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