Stainless steel sand casting, also known as sand casting, is a process that uses non-reusable sand molds to form stainless steel products.
Stainless steel sand casting is cheaper than stainless steel precision casting. This casting method is used to make large stainless steel parts. Stainless steel sand castings have low productivity because the sand mold must be broken to remove the part called the casting. The stainless steel sand casting process involves the use of furnaces, raw materials, patterns and sand molds. The stainless steel material is melted in the furnace, and then poured into the cavity of the sand mold with a spoon, and the sand mold is shaped by the pattern. The sand mold is separated along the parting line, and the solidified casting can be taken out.

The difference between stainless steel investment casting and stainless steel sand casting
Stainless steel investment casting and stainless steel sand casting are two different casting methods for making stainless steel parts by pouring liquid metal into molds. Because both stainless steel investment casting and stainless steel sand casting have their own advantages, we can't say which one is better, just for different applications.
Cost: Due to the complexity and preparation work required, the stainless steel investment casting process is always more expensive than stainless steel sand casting.
Weight: Stainless steel investment casting can make castings less than 0.5kg, while stainless steel sand casting cannot always produce small and complex parts like investment casting. Stainless steel investment casting also has limitations on the size and weight of sand casting. The mold handling equipment in the foundry can affect the weight of the product.
Surface Finish: Surface finish is another big difference between stainless steel investment casting and stainless steel sand casting. Stainless steel investment casting produces finished parts with smooth surfaces and tight tolerances. After degating and shot blasting, the billet can be turned directly into net shape. For stainless steel sand casting, the mold must be disassembled to remove the final product. As a result, the parting line will remain outside the finished part. And because the sand is rough, the surface of the finished casting will be equally rough. Therefore, additional cost and time are required in secondary processing to remove parting lines and smoother surfaces.