heat Filter S S, Materials supplied: Stainless steel, Carbon steel, Low alloy steel, Aluminium alloy, Copper alloy,etc. Our investment casting process:1 ... supplied: Stainless steel, Carbon steel, Low alloy steel, Aluminium alloy, Copper alloy,etc. Machined Castings weight: 0.003KG~35kg.Angle tolerance ... °.Castings Surface Roughness: Ra3.2~Ra12.5Small orders accepted head filter SS