Higher than cast iron on the mechanical properties of the stainless steel precision casting, but it's less than cast iron casting performance.Its melting point is higher than other, and the liquid steel is easy to oxidation, molten steel flow and shrinkage.Stainless steel precision casting due to poor liquidity of liquid steel, in order to prevent steel cold insulation and misrun, casting wall thickness is not less than 8 mm, gating system to simple structure, and section size is bigger than cast iron;Use dry mold or hot mould;Properly increasing pouring temperature, average of 1520 ° ~ 1600 ℃, because of the high pouring temperature, liquid steel superheat, keep long liquid, liquid can be improved.But the water temperature is too high, can lead to coarse grains, defects such as hot cracking, porosity, and adhering sand.So generally small, thin wall and complex shape casting, the pouring temperature is about steel melting point temperature of + 150 ℃;Large, thick wall castings pouring temperature about 100 ℃ higher than the melting point. To prevent to produce the phenomenon such as shrinkage cavity and crack of stainless steel precision casting, these measures must be taken, to make the uniform wall thickness, but also avoid the sharp corners and rectangular structure, also need to add in the mould type with sawdust, add coke to the core, finally also need to use hollow cores and oil sands core to change the sand mold or core of breathable and back down.