Properties and applications of Gr12 titanium alloy forgings

Gr12 titanium forgings have high strength, low density, good mechanical properties, good toughness and corrosion resistance. In addition, titanium forgings have poor process performance, are not easy to cut, and are easy to absorb hydrogen, oxygen, nitrogen, carbon and other impurities during hot processing. In addition, poor wear resistance and complex production process. The industrial production of titanium began in 1948. With the development of the aviation industry, titanium industry is growing at an average annual rate of about 8%. At present, the annual output of titanium forgings has reached more than 40,000 tons, titanium forgings of nearly 30 kinds. Widely used titanium forgings are Ti-6Al-4V (TC4), Ti-5Al-2.5Sn (TA7) and industrial pure titanium (TA1, TA2 and TA3).

Titanium forgings are mainly used in the manufacture of pressurized parts for aircraft engines, followed by structural parts for rockets, missiles and high-speed aircraft.In the mid-1960s, titanium and its alloys were used in general industry, such as the manufacture of electrodes for the electrolysis industry, condensers for power stations, heaters for oil refining and desalination, and environmental pollution control devices. Titanium and titanium alloys have become corrosion-resistant structural materials. In addition, it is used to produce hydrogen storage materials and shape memory alloys.

Standard: National Standard GB/T 16598-1996

American Standard: ASTM B381

Material：TA0,TA1,TA2,TA3,TC4

Delivery condition: Annealed condition (M) Hot working condition (R) Cold working condition (Y) (annealed, super raw wave flaw detection)

Packing: carton or wooden case

Surface treatment: turning, chamfering

Surface quality: the surface roughness Ra of both end faces should be no more than 3.2m (subject to the requirement of ultrasonic flaw detection), the surface roughness Ra of the inner and outer sides should be no more than 12.5m (Ra should be no more than 3.2 m circumference required for cylindrical ultrasonic flaw detection), the chamfering radius should be 5 ~ 15mm. there should not be any visible defects on the surface of the product, such as cracks, wrinkles, double skins, etc. The surface of the product should be smooth and smooth, and the surface of the product should be smooth and smooth. Local surface defects can be removed by grinding, cleaning depth should not exceed the size tolerance, and should be small allowable size. The ratio of cleaning depth to width of both end faces should not exceed 1: 6, and the inner and outer sides should not exceed 1: 10. Outer grinding should be carried out in the axial direction.