The Ti-12 alloy is a type of titanium alloy that exhibits
resistance to crevice corrosion. At a temperature of 300 degrees,
its tensile strength is twice that of pure titanium. Additionally,
this alloy shows a significant enhancement in corrosion resistance
in reducing media.
The GR12 titanium wire, also known as Titanium-Molybdenum-Nickel
alloy, has a nominal composition of Ti-0.3Mo-0.8Ni. It was
researched and developed by the United States in the mid-1970s.
Like the Ti-12 alloy, the GR12 titanium wire is also resistant to
crevice corrosion. Its tensile strength is double that of pure
titanium, and it demonstrates improved corrosion resistance in
reducing media. Moreover, it does not undergo crevice corrosion in
the presence of chlorides within the range of 150 to 200. The GR12
titanium wire is commonly utilized in applications that involve
high temperatures, high pressures, and corrosive environments.
Chemical Composition
| Grade | Ti | Mo | V | Ni | Fe | N | C | H | O |
| Gr12 | balanced | 0.2-0.4 | 3.5-4.5 | 0.6-0.9 | ＜0.30 | ＜0.03 | ＜0.08 | ＜0.015 | ＜0.25 |
Mechanical properties
| Grade | Tensile strength Rm/MPa | Elongation strength Rp0.2/MPa | Elongation after fracture A/% | Reduction of area Z/% |
| Gr12 | ＞485 | ＞345 | ＞18 | ＞25 |
Application
The Gr12 titanium-molybdenum alloy wire possesses exceptional
high-temperature strength, corrosion resistance, and oxidation
resistance, enabling it to operate reliably over extended periods
in various acidic, saline, and alkaline environments. This alloy
also offers good workability, allowing it to be readily formed into
filaments of diverse shapes and sizes.
With its broad application spectrum, the Gr12 titanium-molybdenum
alloy is commonly employed in the production of high-temperature
equipment. It is particularly useful in oil and gas industry
applications such as oil well pipelines, chemical equipment, and
high-temperature furnaces, especially where conditions of high
temperature, high pressure, and corrosive environments are present.
Furthermore, the alloy sees extensive use in manufacturing
components for high-temperature engines and turbines within the
aerospace sector, as well as in rocket engine applications that
involve withstanding extreme temperatures and pressures.
