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TA8 titanium alloy (Ti-0.05Pd) is a titanium alloy with similar physical/mechanical properties and corrosion resistance to TA9. The presence of palladium helps improve the corrosion resistance of the alloy. TA8 titanium alloy has good formability and is easy to be processed into various shapes. In addition, it also has good toughness and is easy to weld. TA8 titanium alloy has excellent corrosion resistance in highly oxidizing and mildly reducing environments.

Due to its castable properties, TA8 titanium alloy is commonly used in applications such as casting valves and fittings. In short, TA8 titanium alloy is an alloy material with stable performance, good corrosion resistance, and easy to form and process.

Chemical composition of titanium alloy TA8 (%)

Fe

C

Si

Cu

N

Zr

Al

Sn

H

O

Ti

≦0.3

≦0.1

≦0.15

2.5-3.2

≦0.05

1-1.5

4.5-5.5

2-3

≦0.015

≦0.15

margin

Physical properties of titanium alloy TA8

tensile strength 485 MPa

Yield Strength 350 MPa

Poisson’s ratio 0.34-0.40

Elastic Modulus 103 Gpa

Elongation at 50 mm (A5) 28%

Hardness(HV) 150

Welding of TA8 titanium alloy

TA8 titanium alloy has excellent welding performance! It has the following characteristics:

Excellent weldability: TA8 titanium alloy has very good weldability evaluation and can be used in a variety of welding methods, such as inert gas welding (TIG), manual arc welding (SMAW) and electron beam welding.

Good fusion: TA8 alloy can fuse well during the welding process, forming a uniform weld and a scar-free welded joint.

A small amount of oxidation: During welding, the surface of TA8 titanium alloy has a relatively low tendency to oxidize, which can reduce the formation of oxide layers and reduce the risk of welding defects.

Excellent mechanical properties: The welded TA8 titanium alloy welded joints can maintain good mechanical properties, such as high strength, good corrosion resistance and fatigue strength.

Overall, TA8 titanium alloy has excellent welding performance, is suitable for various welding processes, and can meet diverse welding requirements.

Heat treatment of TA8 titanium alloy

Annealing of this material can be accomplished by heating to 650-760°C (1202-1400°F) for 6 minutes to 2 hours, followed by air cooling. If stress relief is required, the material must be heated to 480-595°C (896-1103°F) for 15 minutes to 4 hours and then air cooled.

Application of TA8 titanium alloy

TA8 titanium alloy is composed of titanium and palladium and has the following advantages, so it has a wide range of applications in various fields:

Lightweight: TA8 titanium alloy has a lower density and is lighter in weight than many other metals, such as steel and aluminum. This makes it very attractive in applications where structural load relief is required.

Corrosion resistance: TA8 titanium alloy has excellent corrosion resistance, especially against crevice corrosion. This makes it widely used in the processing and storage devices of corrosive media in the fields of petroleum, chemical industry and metallurgy.

Resistance to hydrogen absorption: TA8 titanium alloy has good resistance to hydrogen absorption and can avoid hydrogen embrittlement in some specific environments, which is crucial in many applications, especially in the petroleum and chemical industries.

Based on these characteristics, TA8 titanium alloy is widely used in petroleum, chemical industry, metallurgy and other fields. For example, it can be used to manufacture oil drilling rigs, chemical equipment, seawater treatment equipment, oil storage tanks, ship parts, etc.