ZINC DIE CASTING ALLOYS

Purity Casting Alloys has the flexibility to provide quick turn around for short or long run jobs. Three sizes of ingots are available - small ingots, split ingots or large foundry ingots (see chart below).

Whether you are sand casting, die casting, pressure casting, let us help you choose the right alloy for the job. We only use silicon graphite crucibles & ladles to ensure high purity levels.

The following is a list of standard alloys that we manufacture. Custom alloys are also available. For more information on specifications & properties of these alloys, please contact us.

Zinc Alloys - Meet all ASTM and ISO specifications. Stock items include:

ZA-3 ZA-5 ZA-8 ZA-12 ZA-27

Ingot sizes -

	Length	Width	Depth	Zinc
Small	10"	3"	2"	10 Lbs
Medium	20"	3"	2"	20 Lbs
Large	28"	6.5"	3.5"	80 Lbs

Chemical Specifications (% by weight) -

ZA-3 ZA-5 ZA-8 ZA-12 ZA-27
Aluminum 3.9 - 4.3 3.9 - 4.3 8.2 - 8.8 105. - 11.5 25.0 - 28.0
Copper 0.03 max 0.75 - 1.25 0.8 - 1.3 0.5 - 1.2 2.0 - 2.5
Magnesium 0.04 - 0.06 0.03 - 0.08 0.02 - 0.03 0.015 - 0.03 0.01 - 0.02
Iron 0.075 max 0.1 max 0.075 max 0.075 max 0.1 max
Cadmium 0.003 max 0.003 max 0.005 max 0.005 max 0.005 max
Zinc Remainder Remainder Remainder Remainder Remainder

Physical Properties (ZA-3 & ZA-12) -

ZA-3 ZA-12
Density (lb/in3) 0.240 0.218
Melting Point (degree F) 728 810
Electrical Conductivity (% IACS) 27 28
Coefficient of Thermal Expansion (68F-212F, uin/in/F) 15.2 12.9

Mechanical Properties (ZA-3 & ZA-12) -

ZA-3 ZA-12
Tensile Strength (ksi) 41 58
Yield Strength (ksi) - 46
Elongation (% in 2") 10 6
Shear Strength (ksi) 31 43
Hardness (Brinell) 82 105

For more information or to order please contact us.