Molten metal is injected, under pressure, into hardened steel dies, often water cooled. Dies are opened, and castings are ejected.
Aluminum, Zinc, Magnesium, and limited Brass.
Not normally over 2 feet square. Some foundries capable of larger sizes.
Al and Mg ± .002″/in.
Zinc ± .0015″/in.
Brass ± .005″/in.
Add ± .001″ to ± .015″ across parting line depending on size.
Minimum Draft Requirements:
Al & Mg: 1° to 3°
Zinc: 1/2° to 2°
Brass: 2° to 5°
Normal Minimum Section Thickness:
Al: .03″ Small Parts: .06″ Medium Parts
Mg: .03″ Small Parts: .045″ Medium Parts
Zinc: .025″ Small Parts: .040″ Medium Parts
Usually 2,500 and up.
Normal Lead Time:
Samples: 12-20 weeks.
4-8 weeks A.S.A.