Non heat-treatable alloys (Topic: 10055)

The non heat-treatable alloys such as AW-1050 and 3003 will similarly to heat-treatable alloys loose strength when heated to high temperatures and tested there.

The temper state of the alloy is the determining factor also here for what is the result of a stay at an elevated temperature on the room temperature properties. If the alloy is in a cold deformed (strain-hardened) temper the result of heating to a high temperature will be loss of strength due to recovery/recrystallisation.

The non heat-treatable alloys are however normally delivered in either O or F temper as extrusions, so that a stay at an elevated temperature doesn't result in any significant losses of room temperature strength. It could however result in structural changes in the material such as grain growth, which in turn can reduce the ductility (reduced formability).