With reference to die casting aluminum selection,six major elements make up die casting aluminum alloy: silicon, copper, magnesium, iron, manganese, and zinc. Each element play important role independently and interactively.For die casting,Weiheng Die Casting is professional manufacture.
There are several types of die casting aluminum alloy we use in most conditions.Like A380,A383,A360 etc.
A380 /ADC12 is by far the most widely cast of the aluminum die casting alloys, offering the best combination of material properties and ease of production. It may be specifed for most product applications. Some of the uses of this alloy include electronic and communications equipment, automotive components, engine brackets, transmission and gear cases, appliances, lawn mower housings, furniture components, hand and power tools.
Alloy 383 (ANSI/AA 383.0) and alloy 384 (ANSI/AA 384.0) are alternatives to A380 for intricate components requiring improved die lling characteristics. Alloy 383 oers improved resistance to hot cracking (strength at elevated temperatures).
Alloy A360 (ANSI/AA A360.0) oers higher corrosion resistance, superior strength at elevated temperatures, and somewhat better ductility, but is more dicult to cast.
Alloy 390 (ANSI/AA B390.0) was developed for automotive engine blocks. Its resistance to wear is excellent; its ductility is low. It is used for die cast valve bodies and compressor housings in pistons.
Alloy 218 (ANSI/AA 518.0) provides the best combination of strength, ductility, corrosion resistance and nishing qualities, but it is more dicult to die cast.
Usually,Die castings are not suitable for heat treatment or gas or arc welded/brazed.
Alloy A380 has better than average machining characteristics. Alloy 218, with magnesium the major alloying element, exhibits among the best machinability. Alloy 390, with the highest silicon content and free silicon constituent, exhibits the lowest.
Decorative nishes can be applied to aluminum die castings through painting, powder coat nishing, polishing, epoxy nishing, and plating. Aluminum can be plated by applying an initial immersion zinc coating, followed by conventional copper-nickelchromium plating procedure similar to that used for plating zinc metal/alloys. Protection against environmental corrosion for aluminum die castings is achieved through painting, anodizing, chromating, and iridite coatings. Improved wear resistance can be achieved with aluminum die castings by hard anodizing.
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