Titanium grade 5

The most popular of all titanium alloys

Ti6Al4V (3.7164 / 3.7165) is the most widely used titanium alloy globally, accounting for over 50% of the world’s titanium usage. This is largely due to its significant use in the aerospace industry, which fully leverages the benefits of this grade. Why is Titanium Grade 5 (Ti6Al4V / 3.7164 / 3.7165) so favored? The key lies in its excellent balance between weight, strength, corrosion resistance, and workability.

The properties of Titanium Grade 5 (Ti6Al4V / 3.7164 / 3.7165)

• Highly resistant to saltwater
• Highly resistant to high temperatures up to 430°C/806°F
• A good resistance to metal fatigue
• Low thermal expansion
• High strength-weight ratio
• Low elastic modulus, meaning a high stiffness

Strong alloy with a high UTS

Titanium grade 5 is very popular because of its high Ultimate Tensile Strength (UTS). It is more than 4 times as strong as Grade 1 titanium while retaining the same stiffness and thermal properties as the commercially pure titanium grades. The standard minimal UTS of Ti6Al4V is 895MPa. The Solution Treatment and Aging (STA) heat treatment significantly increase the mechanical values. It can result in a UTS of more than 1200MPa.

Several application areas of Titanium grade 5

The unique properties of Titanium Grade 5 (Ti6Al4V / 3.7164 / 3.7165) make it suitable for a wide range of applications:

• Aerospace: Ti6Al4V (3.7164 / 3.7165) is widely used for aircraft components due to its high strength and low weight.
• Heat Exchangers: Its high corrosion resistance and strength make it ideal for heat exchangers in industrial processes.
• Semiconductor Industry: Supports the manufacturing of components in the semiconductor industry due to its durability and precision.
• Subsea Applications: Ideal for underwater applications, such as submarine parts, because of its corrosion resistance and high strength.
• Satellite Components: Used in space technology for satellites due to its excellent performance under extreme conditions.

GSA 08 3040 Annealing Treatment for Titanium Grade 5

The GSA 08 3040 annealing treatment is a heat treatment applied to Titanium Grade 5 (Ti-6Al-4V) to optimize its material properties. This treatment reduces internal stresses that arise during machining or welding of the material. As a result, dimensional stability is improved, durability is increased, and the risk of cracking is minimized. This makes the treatment essential for applications requiring high precision and reliability.

The GSA 08 3040 annealing treatment is often required by ASML for Titanium Grade 5 (Ti-6Al-4V). It is widely used in the high-tech industry, particularly by ASML suppliers. The GSA 08 3040 standard, part of the General Standard for ASML (GSA), is mandatory for precision components in the semiconductor industry. These components are used in lithography machines, vacuum systems, and other critical equipment, where extreme accuracy and stability are essential.

By applying the GSA 08 3040 annealing treatment, Titanium Grade 5 gains improved properties, making it less susceptible to stress deformation. This is crucial for applications where minimal tolerances and long material lifespan are required.

In addition to the “standard” GSA annealing treatment, an STA (Solution Treated and Aged) annealing treatment can also be applied to Titanium Grade 5. This process enhances the material’s mechanical properties to their highest levels, making it stronger but also more challenging to machine. To save costs and time, many of our customers choose to have the material supplied by us with the STA treatment included (if required). The STA annealing treatment can also be performed after machining, but this may cause high-tolerance parts to exceed their specified tolerances. STA treatment does not always need to follow the GSA standard, but it is possible (STA Annealed according to GSA 08 3040).

Do you have any questions or need more information? Feel free to contact us!