The advantages of semi-solid casting are as follows:[11]
Complex parts produced net shape
Porosity free
Reduced shrinkage
Excellent mechanical performance
Pressure tightness
Tight tolerances
Thin walls.
Heat treatable (T4/T5/T6)
Due to the lower pressures and temperatures required to die cast semi-solid metal the die material does not need to be as exotic. Often graphite or softer stainless steels may be used. Even non-ferrous dies can be used for one time shots. Because of this the process can be applied to rapid prototyping needs and mass production. This also allows for the casting of high melting point metals, such as tool steel and stellite, if a higher temperature die material is used. Other advantages include: easily automated, consistent, production rates are equal to or better than die casting rates, no air entrapment, low shrinkage rates, and a uniform microstructure.[3]