Titanium 6Al-6V-2Sn

Aging Procedure

Age at 538-621 C(1000-1150 F) for 4-8 hours and air cool.

Annealing Procedure

Hold at 704 C(1300 F) for 2 hours, air cool. For stress relieving, hold at 593 C(1100 F) for 2 hours and air cool.

Applications

Used primarily in plate and forging applications for airframe sections, rocket cases and ordnance components.

Cold Workability

The cold working characteristics of this material are similar to those of austenitic stainless steels. In multiple forming operations, intermediate stress relieving is recommended to offset the alloy's tendency to work harden. Post-work annealing is required to re-attain optimum performance characteristics.

Forgeability

Rough at 932 C(1710 F), finish at 843 C(1550 F).

Formability

This alloy may be hot or cold formed. Popular methods include hydropress, stretch or drop-hammer. This material responds similarly to 300 series stainless steels.

Heat Treatability

Solution treat at 843-913 C(1550-1675 F) for 1 hour and water cool.

Hot Workability

Hot forming will reduce both the springback and required forming forces, and will increase the overall ductility of the material.

Machinability

As a family, titanium and its alloys have developed a mystique as a nightmare to machine. This is simply not the case. Experienced operators have compared its characteristics to those found in 316 stainless steel. Recommended practice includes high coolant flow(to offset the material's low thermal conductivity), slow speeds and relatively high feed rates. Tooling should be tungsten carbide designations C1-C4 or cobalt type high speed tools.

Other Physical Properties

Beta Transus (F +/- 25) 1735

Principle Design Features

This alpha-beta alloy can be heat treated to higher strengths and heavier section sizes than alloy 6AL-4V. It combines excellent strength, corrosion resistance and moderately good fabricability. Beta Transus (F +/- 25) 1735.

Weldability

Beta Transus (F +/- 25) 1735