Sand Casting Compared to Die Casting. If you are wondering which is better- sand casting or die casting – then this is the right article for you. Whether you want to know about sand casting or die casting advantages or a comparison of both, this article will certainly help you.
In order to have a clearer view of what is better, you must first know what these two methods are all about. Sand casting, as its name implies, forms its mold with the help of a pattern or model which is pressed into a kind of sand mixture. Die casting on the other hand uses hardened tool steel as a mold in making its cast parts.
Both processes are good choices of metal casting method. It just depends on what kind of metal parts you plan to cast or produce. For large hollow metal parts like automotive cylinder heads, sand casting is usually used. For smaller and more detailed metal parts, die casting is the more ideal process. The casting weight range for sand casting is actually unlimited while die casting ranges from 1oz up to 20 pounds.
When it comes to mass producing parts, which requires intricate details and smooth surface, die casting is the more preferred method. It is because die casting process has a dimensional tolerance of as low as .001 inch, while sand casting has a minimum of .010 inches.
Money-wise, initial expenses for die casting are more expensive, especially the die cast tooling than the initial costs used for of sand casting. However, in the long run, die casting has a lot cheaper labor cost compared to the labor cost incurred by sand casting.
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