TA1 Wire is an industrial pure titanium wire defined in the Chinese National Standard (GB/T 3620.1), corresponding to ASTM Grade 1 (Gr.1) in the United States and CP Ti Grade 1 in ISO 5832-2. Within the titanium family, TA1 is an alpha-phase single-phase titanium alloy, and it is the purest, most ductile, and lowest-strength grade among industrial pure titanium alloys.
Core Advantages and Features
- Exceptional Corrosion Resistance: The surface of TA1 easily forms a dense, self-repairing TiO₂ passive film. It exhibits outstanding corrosion resistance in seawater, chloride solutions, wet chlorine gas, nitric acid, and various neutral salt solutions. Its performance is significantly superior to 316L stainless steel, and it is highly resistant to pitting and crevice corrosion.
- Superior Cold Formability and High Plasticity: TA1 is inherently soft. In the annealed state, its elongation after fracture can reach over 24%-30%, allowing it to withstand severe cold deformation. It is highly suitable for complex cold-working processes such as wire drawing and bending.
- Outstanding Biocompatibility: It is non-toxic, non-magnetic, and non-allergenic. With a low elastic modulus (approximately half that of steel), it effectively reduces the "stress shielding" effect, making it one of the most biocompatible metallic materials for bone tissue and medical applications.
- Excellent Low-Temperature Toughness: Unlike ordinary steels that tend to embrittle at low temperatures, TA1 maintains good plasticity and impact toughness even in cryogenic environments of -196°C and -253°C, without undergoing a ductile-to-brittle transition.
- Good Weldability: It can be welded using methods such as TIG, MIG, and laser welding, with the weld strength matching that of the base metal. However, strict inert gas shielding is required during welding to prevent embrittlement caused by the infiltration of oxygen and nitrogen.
