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Heat treatment involves hardening the product by means of heating it to a specified temperature and quenching it in a mineral based quenching oil or unique water based polymer . The item is then tempered by re-heating to a pre-determined temperature and held for a period of time to achieve the required mechanical properties. The heat treated item then posses properties that will guarantee its service life and enhance its safety.

Heat treatment of all our products is by accurately controlled processes to produce a finished material hardness according to the specifications.

 

T5	Artificially age. This heat treatment is done at a low temperature and it serves to eliminate growth of thermal cycle. It is used to stabilize castings dimensionally (while improving mechanical properties in someway) to improve machinability and to relieve stress.
T6	Solution heat treat, quench and artificially age.            This heat treatment usually results in maximum tensile and yield strengths with adequate elongation. Aging stabilizes the properties.
T7	Solution heat treat, quench and artificially overage.     This heat treatment improves mechanical properties to a large degree, stabilizes the castings, and usually results in a slightly lower tensile and yield strength but an increased elongation value compared to the T6 heat treatments.

Heat treatment for T6 type for example, is to heat the alloy  to somewhere between 475^o - 510^oC continuously for 8 hours making the copper in the alloy to become dissolved in the aluminum and forming what is called a "Single Phase Alloy". Then the heated alloy is cooled rapidly by water quenching the reformation of the copper is retarded and the aluminum is supersaturated with copper, is locked into the "Single Phase Alloy" state.

The end result is an aluminum alloy, or also called hypereutectic piston, that is up to 30% stronger than before.