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Die Casting Alloys

What is die casting? Die casting is the procedure where melted metal alloy, like aluminum or zinc, is pushed by a piston into a steel die and left under high pressure until the metal hardens. This is how metal parts for automobile die casting, heatsink die casting, and roof tile plates.

There are definite metals that are utilized as die casting alloys. Alloys utilized in die casting are combinations that hold two or more metals. Only metals which do not hold iron are utilized as die casting alloys. Such metals are zinc, aluminum, copper, magnesium, lead, and tin. Zinc is the simplest to die cast among these alloys because it is very sturdy, has the highest ductility has a low melting point, and has a high impact strength. It is the best for creating tiny metal parts. Aluminum is best recognized to be lightweight. What makes it an excellent die cast alloy is that it has high dimensional stability which is crucial in fabricating thin walls for the metal parts. Aluminum also has high corrosion resistance which helps extend the life of the metal parts. Copper has the highest mechanical characteristics among the die casting alloys. It also has high dimensional stability and high corrosion resistance like aluminum, and has high hardness as well. Magnesium is the metal which is the simplest to machine. It has an exceptional strength to weight ratio which is an essential property for building metal parts. Lead and tin are the first metals to be die casted. They are also corrosion resistant and have high densities that cause them to be strong.

These metal alloys have their own properties that make a unique metal part the way it is. Having the right alloy for die casting is necessary for the product to come out right.

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