FORMING TITANIUM
Titanium is readily formed at room temperature, using
techniques and equipment suitable for steel. When correct parameters have been established,
tolerances similar to those attainable with stainless steel are possible with titanium and
its alloys.
Recognition of several unique characteristics of titanium will aid in ease of forming:
1. The room temperature ductility of titanium and its alloys, as measured by uniform
elongation, is generally less than that of other common structural metals. This means that
titanium may require more generous bend radii and has lower stretch formability. Hot forming
may be required for severe bending or stretch forming operations.
2. The modulus of elasticity of titanium is about half that of steel. This causes significant
springback after forming titanium for which compensation must be made.
3. The galling tendency of titanium is greater than that of stainless steel. This
necessitates close attention to lubrication in any forming operation in which titanium is in
contact (particularly moving contact) with metal dies or other forming equipment.
PREPARATION FOR FORMING
Titanium surfaces normally are acceptable for forming operations as received from
the mill. Gouges and other surface marks, introduced during handling, should be removed by
pickling or sanding. Burred and sharp edges should also be filed smooth before forming to
prevent edge cracking.