... 4.High Precision investment casting Detail Description of investment casting : Casting processMaterailInvestment castingASTMA148class80-40, ASTMA148Class80 ... 1.7218-25CrMo4Sand castingGGG50,GGG30, ASTMA48 class25B, 42CrMo4, C22ductile iron 65-45-12, AlCuMgpbF34, ... 25CrMo4 Die castingC1040 ,Alsi12Material: alloyProcess: sand casting ,investment casting ,die casting and so onStandard: GB ,ASTM ,DIN ...