Hot Chamber Zinc Casting Alloys

Mechanical Properties

Zinc Alloy	#3	#5	#7	#2	ZA-8	EZAC
Ultimate Tensile Strength (psi x 10^3)	41	48	41	52	54	60
Yield Strength 0.2% Offset (psi x 10^3)	-	-	-	-	42	57
Elongation (% in 2")	10	7	13	7	6-10	1
Shear Strength (psi x 10)	31	38	31	46	-	-
Hardness (Brinell)	82	91	80	100	95-110	116
Impact Strength (ft-lb)	43	38	43	35	31	-

Zinc Alloy	#3	#5	#7	#2	ZA-8	EZAC
Density (lb / in^3)	0.24	0.24	0.24	0.24	0.24	-
Melting Range (F)	719-728	717-727	718-728	715-734	707-759	-
Electrical Conductivity (% IACS)	27	26	27	25	27.7	-
Thermal Conductivity (BTU/ft-hr F)	65.3	62.9	65.3	60.5	66.3	-
Coefficient of Thermal Expansion (68-212 F)(u in/in F)	15.2	15.2	15.2	15.4	12.9	-
Specific Heat (BTU/lb F)	0.10	0.10	0.10	0.10	0.10	-

Zinc Alloy	#3	#5	#7	#2	ZA-8	EZAC
Aluminum	3.5-4.3	3.5-4.3	3.5-4.3	3.5-4.3	8.0-8.8	-
Magnesium	0.02-0.05	0.03-0.08	0.01-0.02	0.02-0.05	0.02-0.03	-
Copper	0.25 max	0.75-1.25	0.25 max	2.6-2.9	0.8-1.3	-
Iron (max)	0.10	0.10	0.075	0.075	0.10	-
Lead (max)	15.2	15.2	15.2	15.4	12.9	-
Cadmium (max)	0.004	0.004	0.002	0.003	-
Zinc	Balance	Balance	Balance	Balance	Balance	-