Stainless steel parts are often used in marine projects or the shipbuilding industry due to their high strength and corrosion resistance. Stainless steel precision casting parts are widely used in the shipbuilding industry or marine projects due to their manufacturing flexibility and cost-effectiveness. Investment casting requires mold forming, so it can form parts with more complex structures; and because the investment casting mold is relatively simple, the mold cost is relatively low. Therefore, the production cost of stainless steel investment castings is relatively low, and the precision of the products is relatively high, so investment castings are widely used.