A number of factors play a role in the proper selection of an alloy for casting. One of these criteria is the ability of the alloy to absorb metallostatic casting pressure. The amount of pressure exerted by the investment castings can be measured using the table 1b. The thickness of the casting’s wall is also a determining factor. Different investment casting manufacturers have different wall thicknesses. A casting with a thick wall is as strong as one with a thin wall, but rapid cooling is equally effective.
Another important investment casting criteria is the design of the part to be cast. A casting can be used for many different purposes, including airborne missile sight. This is possible thanks to the consistent mechanical properties of magnesium alloys. A casting is also less labour-intensive than a traditional process. The process can also produce thin walls and close tolerances. Choosing an investment casting for a given part will ultimately make it easier to achieve a desired result.