Characteristics and Applications of Common Titanium and Titanium Alloys
Fengze Aerospace Materials 2020-01-02 16:21:21
TA2
Density 4.51g/cm3; Tensile strength 440~620N/mm2, industrial pure titanium, high strength, good plasticity, excellent comprehensive performance, and good corrosion resistance in atmosphere, seawater, wet chlorine and oxidizing, neutral and weak reducing media.
TA9(Ti-0.2Pd)
Density 4.52g/cm3; Tensile strength 370~520N/mm2
In addition to the characteristics of pure titanium, TA9 can reduce the hydrogen overpotential of the alloy in the medium due to the addition of a small amount of noble metal palladium (0.2%Pd) into the industrial pure titanium, so that the stable potential of the titanium alloy moves forward significantly, and the corrosion resistance of titanium in oxidizing medium is improved. Especially in high temperature chloride solution, the crack corrosion resistance of TA9 alloy is optimal.
The main features of TA9 are as follows: 1. The corrosion resistance in reducing medium is significantly higher than that of pure titanium, and it has good corrosion resistance in hydrochloric acid, low concentration sulfuric acid, high temperature formic acid and citric acid. 2. It has the same excellent corrosion resistance as pure titanium in an oxidizing environment, and can be used in an alternating environment of reduction and oxidation. 3. Hydrogen absorption resistance is better than pure titanium. 4. It has excellent crevice corrosion resistance in high-temperature and high-concentration chlorides and does not corrode in seawater at 250℃. 5. has good proces formability, can produce various metallurgical semi-finished product and various industrial equipment.
TA9 alloy has been widely used in metallurgy, chemical industry, petroleum and other sectors. It is mainly used for heat exchangers and nozzles in dilute hydrochloric acid, sulfuric acid and environments prone to crevice corrosion. Flange sealing ring, diamond gasket and other equipment and parts.
TA10(Ti-0.3Mo-0.8Ni)
Density 4.6g/cm3; Tensile strength ≥485N/mm2
It has good crack corrosion resistance in high temperature and low PH chloride solution and weak reducing acid. The comprehensive corrosion resistance of this alloy in sulfuric acid and hydrochloric acid is better than that of industrial pure titanium, but lower than that of titanium palladium alloy, while it is better than that of palladium alloy in aqua regia and nitric acid.
TC4(Ti-6AL-4V)
Density 4.46g/cm3; Tensile strength ≥895N/mm2
It is widely used in aerospace, communication, weapons, chemical and other fields and belongs to α+β titanium alloy. In addition to excellent corrosion resistance, comprehensive mechanical properties are also very good, with good welding properties, which can be heat treated and strengthened.