Ti-6Al-4V is the nominal chemical composition representation method of titanium alloy grade TC4 (also sometimes called Ti64 or ASTM Grade 5). The main components are Al(5.5%-6.75%), V(3.5%-4.5%), and the rest chemical composition is Titanium.
Ti-6Al-4V is an α-β titanium alloy known for its high specific strength and high corrosion resistance. It has the advantages of both α and β titanium alloys, that is, good plasticity and good thermal strength (can be used long-term at high temperature 400°C ), strong resistance to seawater corrosion, simple production process, can be welded, hot and cold forming, and can be strengthened by quenching and aging treatment. It’s mainly used in aircraft compressor disks and blades, ship pressure shells, large-size forgings, etc.
Ti-6Al-4V (TC4) also has good low temperature performance. It still has good toughness below -196°C, and is used to manufacture low-temperature and high-pressure containers, such as liquid hydrogen fuel tanks for rockets and missiles.
Due to its good properties, Ti-6Al-4V is the most widely used titanium alloy.
Chemical composition: (In weight percentage wt.%)
Physical and Mechanical Properties:
The mechanical properties of Ti-6Al-4V are related to its heat treatment. Some typical physical and mechanical properties of fully processed Ti-6Al-4V are as follows.
- Biomedical applications such as biomedical implants or prosthetics, etc.
- Additive manufacturing
- Parts and prototypes for aerospace industry and racing industry. For example, Ti-6Al-4V is widely used in Boeing 787 parts
- Marine application
- Chemical industry
- Bike frame
- AMS: 4911
- UNS: R56400