- What metals are used in die casting?
Time:
2023-04-20
The minimum cross-sectional area and minimum drawing Angle corresponding to various materials are listed in the table below. The thickest section should be less than 13mm.
The minimum cross-sectional area and minimum drawing Angle corresponding to various materials are listed in the table below. The thickest section should be less than 13mm.
The main metals used in die casting include zinc, copper, aluminum, magnesium, lead, tin, and lead-tin alloys. Although die casting iron is rare, it is feasible. Special die-cast metals include ZAMAK, aluminum-zinc alloys, and Alcoa standards :AA380, AA384, AA386, AA390, and AZ91D magnesium. The characteristics of various metals are as follows:
- Zinc: The easiest metal to die cast, economical to manufacture small parts, easy to coating, high compressive strength, high plasticity, long casting life.
- Aluminum: Light weight, manufacturing complex and thin-wall castings high dimensional stability, corrosion resistance, good mechanical properties, high thermal and electrical conductivity, strength is still high at high temperature.
- Magnesium: Easy to be machined, high strength-to-weight ratio, the lightest of commonly used die-cast metals.
- Copper: High hardness, strong corrosion resistance, commonly used die casting metal mechanical performance is the best, wear resistance, strength close to steel.
- Lead and tin: High density, high dimensional accuracy, can be used as special corrosion protection parts. Due to public health concerns, the alloy cannot be used as a food processing or storage device. Alloys of lead, tin and antimony (sometimes with a little copper) are used to make hand type in letterpress printing and for gilding.
The upper limits for die casting using aluminum, copper, magnesium and zinc are 70 lb (32 kg), 10 lb (4.5 kg), 44 lb (20 kg) and 75 lb (34 kg), respectively.
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