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What grades of titanium alloys are used in aircraft?

May 11, 2024

Gr5 / Ti-6Al-4V

It is a heat-treatment strengthened titanium alloy, which has good weldability sheet formability and forging performance. Used to manufacture jet engine compressor blades, impellers, etc. Others such as landing gear wheels and structural parts, fasteners, brackets, aircraft accessories, frames, stringer structures, pipes, are widely used.

 

Gr6 / Ti-5Al-2.5Sn

The ability of crack resistance during forging is good, the formability is reasonable, the weldability is good, and the heat treatment can not be strengthened. Used for transmission gear box housing, jet engine housing device and guide vane cover, pipeline structure, etc.

 

Ti-811 / Ti-8Al-1Mo-1V

The ability of formability and crack resistance during forging is acceptable, and the weldability is good, but it can not be strengthened by heat treatment. It is used to make jet engine blades, impels and housings, gyroscope universal guide blade housings, inner skins and frames of nozzle devices, etc.

 

Ti-662 / Ti-6Al-6V-2Sn

It is a heat-treatable titanium alloy with good crack resistance during forging, but poor weldability. Used for manufacturing fasteners, inlet control guide devices, test structural parts.

 

Ti-13V-11Cr-3Al

It belongs to the titanium alloy that can be strengthened by heat treatment, has good formability, certain crack resistance when forging, and good weldability. It is used as structural forgings, plate girder structure, skin, frame, bracket, aircraft accessories, fasteners.

 

Ti-679 / Ti-2.3Al-11Sn-5Zr-1Mo-0.2Si

It belongs to the titanium alloy which can be strengthened by heat treatment and has good crack resistance during forging. It is used to manufacture jet engine blades, impellers, landing gear rollers, aircraft skeletons, fasteners, etc.

 

Ti-6242 / Ti-6Al-2Sn-4Zr-2Mo

Good formability and weldability, good crack resistance when forging, but not heat treatment strengthening. Used in the manufacture of compressor blades, impellers, landing gear rollers, spacer compressor box assemblies, aircraft frames, skin components, etc.

 

Ti-4Al-3Mo-1V

It belongs to the titanium alloy that can be strengthened by heat treatment, has good forgability and formability. Used in the manufacture of aircraft skeleton components.

 

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