Gr12 (TA10, Ti-0.3Mo-0.8Ni)

The core advantage of Gr12 (TA10) lies in the synergistic addition of molybdenum (Mo) and nickel (Ni). After introducing 0.2%–0.4% molybdenum and 0.6%–0.9% nickel into industrial pure titanium, its corrosion resistance in reducing acid media is significantly enhanced. In non-oxidizing acids such as hydrochloric acid (HCl), sulfuric acid (H₂SO₄), formic acid, oxalic acid, and citric acid, the corrosion rate of Gr12 is much lower than that of industrial pure titanium. Within moderate concentration and temperature ranges, it can partially replace more expensive Gr7 (TA9) or nickel-based alloys. This property makes it a high-cost-performance material for handling corrosive media in fields such as chemical engineering, pharmaceuticals, and hydrometallurgy.

Gr12 (TA10) exhibits excellent resistance to crevice corrosion and pitting corrosion in high-temperature chloride solutions (such as seawater, brine, and brine). The addition of molybdenum enhances the stability of titanium's passive film in chloride media, while the addition of nickel further improves the material's corrosion resistance in acidic chloride environments. Synergistically, these elements enable the material to maintain a stable passive state even in high-temperature, high-chloride environments. This characteristic gives it an irreplaceable advantage in applications long exposed to highly corrosive media, such as desalination equipment, chlor-alkali industry, and marine engineering heat exchangers.

Gr12 (TA10) retains the excellent cold and hot working properties and welding performance of industrial pure titanium. It can undergo forming processes such as forging, rolling, stamping, and bending, and can be welded using various methods including TIG (Tungsten Inert Gas) welding, MIG (Metal Inert Gas) welding, plasma welding, electron beam welding, and resistance welding. The corrosion resistance of the welded joint is basically consistent with that of the base material. It is suitable for manufacturing complex corrosion-resistant equipment and large chemical containers.

Gr12 (TA10) has higher room temperature and high-temperature strength compared to industrial pure titanium, while also possessing better creep resistance. Within the moderate temperature range (≤ 300°C), the mechanical properties of Gr12 are significantly superior to those of Gr2 and Gr7, making it suitable for corrosion-resistant equipment subjected to certain loads and structural components in high-temperature conditions.

Gr12 (TA10) exhibits extremely high corrosion margin and good mechanical properties in harsh corrosive environments, significantly extending equipment service life and reducing maintenance and replacement frequency. Compared to Gr7 (TA9), Gr12 does not contain the precious metal palladium (Pd), resulting in lower material costs and serving as an economical alternative to Gr7 in moderate corrosive environments. In industries such as chemical processing, seawater desalination, and pharmaceuticals, downtime losses caused by equipment failure due to corrosion often far exceed the cost of the materials themselves. Gr12 provides customers with long-term stable production assurance through lower material costs and overall lifecycle costs.