Reference Tables

ALLOY	#3	#5	#7	#2	ZA-8	EZAC
Ultimate Tensile Strength (psi x 10³)	41	48	41	52	54	60
Yield Strength 0.2% Offset (psi x 10³)	–	–	–	–	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	–
Fatigue Strength Rotary Bend (psi x 10³) (5 x 108 Cycles)	6.9	8.2	6.8	8.5	–	–
Compressive Yield Strength 0.1 Offset (psi x 10³)	60	87	60	93	–	–

ALLOY	#3	#5	#7	#2	ZA-8
Density (lb/cu in)	.24	.24	.24	.24	.227
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)	.10	.10	.10	.10	.104
Pattern Or Die Shrinkage	.006 in/in	.006 in/in	.006 in/in	.006 in/in	1/8 in/ft \| .007 in/in

ALLOY	#3 INGOT	#3 CASTING	#5 INGOT	#5 CASTING	#7 INGOT	#7 CASTING	#2 INGOT	ZA-8 INGOT
Aluminum	3.9-4.3	3.5-4.3	3.9-4.3	3.5-4.3	3.9-4.3	3.5-4.3	3.9-4.3	8.0-8.8
Magnesium	.025-.050	.02-.05	.03-.06	.03-.08	.01-.02	.005-.020	.025-.050	.015-.030
Copper	.10 max	.25 max	.75-1.25	.75-1.25	.10 max	.25 max	2.6-2.9	0.8-1.3
Iron (max)	.075	.10	.075	.10	.075	.075	.075	.10
Lead (max)	.004	.005	.004	.005	.002	.003	.004	.004
Cadmium (max)	.003	.004	.003	.004	.002	.002	.003	.003
Tin (max)	.002	.003	.002	.003	.001	.001	.002	.002
Nickel	–	–	–	–	.005-.020	.005-.020	–	–
Zinc	Balance	Balance	Balance	Balance	Balance	Balance	Balance	Balance