Heat treatment

F	As Cast - Castings are cooled naturally from the mold in room temperature air with no further heat-treatment.
T-51	Aging Treatment - Castings that are artificially aged by heating metal to 400F for 7-9 hours.
T-6	Solution Heat-treated and Artificially Aged - Castings are Solution Heat-treated by heating metal to 1000F for 4-12 hours and quenched in water at 150-212F.
T-7	Solution Heat-treated and Stabilized - Castings are stabilized to carry them beyond the point of maximum hardness, providing control of growth or residual stress, or both.

 

Properties of Cast and Wrought Alloys

Alloy	Heat Treatment*	Tensile Strength, Ultimate (ksi)	Tensile Strength, Yield (ksi)	Elongation in 2 inches (%)	Typical Brinell Hardness (500 kgf load, (10-mm ball))
A356.2	F	19		3	40-70
A356.2	T51	23	16		45-75
A356.2	T6	30	28	3	55-90
A356.2	T7	31	29	3	60-90
A319	T6	31	20	1.5	65-95
535 (Almag)	F	35	18	8	60-90
Zinc-ZA8	F	38	28	1.5	85-90
Zinc-ZA12	F	42	30	2	105-125
6061 (Wrought)	T6	45	40	12	95
A380 (Die Cast)	F	47	23	3.5	80