Excellence in Aerospace and Defence Heat Treatment

Precipitation hardening, also called age hardening, is a heat treatment technique used to increase the yield strength of malleable materials, including most structural alloys of aluminum, magnesium, nickel and titanium, and some stainless steels.

Predominately it is purchased in the solution annealed or solution annealed and cold worked condition then pre machined when the material is soft. The material is then supplied to Heat Treatment Australia for age hardening to produce hardness and the qualities from which the material was originally chosen.

Materials such as 13-8 PH, 15-5PH, 17-4PH 17-7PH along with nickel cobalt alloys can be age hardened.

Normally performed to an "H" or "TH" condition, these materials can reach hardness post-age treatment of 24 - 50 HRC.

Heat Treatment Australia has the following Nadcap Age Hardening Accreditations:

AC7102 - Nadcap Audit Criteria for Heat Treating

  • AMS2759/3 - Heat Treatment of Precipitating-Hardening Corrosive Resistant Parts
  • AMS2774 - Heat Treatment of Wrought Nickel Alloy and Cobalt Alloys Parts