What Is A GR12 Titanium Tube?

Titanium alloy grade 12 is a high corrosion resistant alloy containing small additions of nickel and molybdenum, which enhance corrosion resistance and increase the strength of the alloy to give better mechanical properties than the commercially pure grades. It is used in mildly reducing or fluctuating conditions. In particular, it is used instead of the commercial purity grades (e.g.grade 2) for better resistance to crevice corrosion in hot brines, and where the extra strength allows the use of lighter sections.

At room temperature, it is an alpha alloy and may contain minor amounts of beta phase. It transforms to beta phase at 890°C ± 15°C

Titanium is reactive, and has a very high affinity for oxygen, which forms a skin of very stable and highly adherent oxide. The skin gives excellent corrosion resistance, despite the reactivity of the metal. The oxide layer forms spontaneously and on exposure to the atmosphere. However, when new parent metal is exposed to anhydrous conditions or in the absence of air, rapid corrosion may occur. Care should also be taken if titanium is to operate in contact with hydrogen, as hydrogen embrittlement from hydride formation can increase strength, with loss of ductility.

GR12 titanium alloy is lightweight, high-strength, possesses superior mechanical properties, and exhibits excellent corrosion resistance. It is widely used in: aerospace, shipbuilding, automotive parts, bicycle parts; marine engineering applications including seawater desalination, aquaculture, offshore oil drilling, and seawater pipelines; the power industry for marine thermal power plants, condensers, and steam turbine blades; the chemical and petroleum industries for chlor-alkali, soda ash, urea, and vacuum salt production; the metallurgical industry for electrolysis and electroplating; light industry for textiles, papermaking, and fuels; the medical industry for equipment manufacturing and human body replacement joints; the construction industry for decoration; the manufacturing of sports equipment; and everyday consumer products such as computers, cameras, watches, eyeglasses, mobile phones, kitchenware, and handicrafts.

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