Ti 6Al 4V (Grade 5)

The alpha-beta alloy is the most widely used commercial high-strength titanium.

The alloy combines good mechanical strength and low density (4.42 kg/dm ) with excellent corrosion resistance in many media.

Heat Treatment:

Grade 5 titanium is entirely heat treatable (solution heat treatment plus ageing) in sections up to 25mm and can be employed up to around 400° C. We stock Grade 5 titanium in various forms, including round bars, plates, sheets and tubes.

Machinability:

The alloy can be machined using practices for austenitic steels with slow speeds, heavy feeds, rigid tooling and large amounts of non-chlorinated cutting fluid.

Weldability:

Welding in the annealed or solution/partially aged condition is good, with ageing completed during the post-weld heat treatment. An inert gas shield must protect the workable area of the weld, heat-affected zone (HAZ) and cooling weld bead from oxidation (oxygen, nitrogen and hydrogen). Fusion welding is achieved by inert gas welding of the molten metal and the adjacent heated zones using a trailing shield. Protective atmospheres are not required when spot, seam and flash welding.

Corrosive Resistance:

Grade 5 titanium offers excellent resistance to marine and offshore oil & gas environments. It resists a wide range of acid conditions, being highly resistant to oxidising acids, possessing impressive resilience to reducing acids and offering superior resistance to most organic acids at lower concentrations and temperatures. Hydrofluoric acid rapidly attacks the alloy, and use with red-fuming nitric acid is prohibited. Grade 5 has broad commercial engineering use and is popular in above-sea and sub-sea applications.