TA2G (ERTi-2) Commercially Pure Titanium Welding Wire

TA2G is a Chinese grade of commercially pure titanium in welding-wire form, corresponding to AWS A5.16 ERTi-2 / ASTM Grade 2 / UNS R50400. It shares the composition and properties of TA2 but is supplied as straight length or coil wire for TIG/MIG welding and fastener manufacture, offering balanced strength, ductility, corrosion resistance and biocompatibility.

Overview

• Material: TA2G — CP titanium welding wire / fastener stock
• International equivalent: AWS A5.16 ERTi-2 / ASTM Gr.2 / UNS R50400
• Typical forms: straight wire and coiled wire (for TIG/MIG); bar and coil for fasteners

Chemical Composition (wt%)

Physical Properties

Mechanical Properties

Key Features

• Low density, relatively high strength and good formability;
• Good corrosion resistance in a wide range of media;
• Good biocompatibility;
• Good thermal stability at moderate temperature.

Fabrication & Heat Treatment

• Hot working: forged or extruded at 800–900 °C in a neutral or slightly oxidising atmosphere.
• Cold working: cold drawn and rolled; intermediate annealing is required when cold reduction reaches 30–60 %.
• Welding: typically TIG welding; ensure the weld zone is fully shielded by inert gas.
• Annealing: 650–720 °C for 0.5–2 h.
• Stress-relief annealing: 530–550 °C for 0.5–1 h, or 470–490 °C for 2–4 h.

Typical Applications

• Aerospace: aircraft structural parts and engine components;
• Chemical industry: reactors and piping;
• Biomedical: dental implants and artificial joints;
• Marine engineering: vessels and offshore oil-drilling platform equipment;
• Consumer goods: spectacle frames and watch bracelets;
• Welding consumable: filler wire (ERTi-2) for CP titanium fabrication.

For detailed datasheets, mill certificates or inquiries on wire diameters, spooling and packaging, please contact our sales & engineering team.