Guide to Choosing Casting Materials: How to Choose for Wear Resistance, Heat Resistance, Shock Resistance, and Dimensional Stability

by | Sep 29, 2026 | Blog

2026/08/28 Summary: The selection of casting materials should start from the "use environment," not the material name. First, determine the true failure modes of the part—wear, impact, high temperature, corrosion, or dimensional deformation—and then match the material group: high-chromium cast iron for wear, high-manganese steel for repeated impact, heat-resistant steel for high internal temperature in the furnace, alloy steel for structural strength, and ductile iron for a balance of cost and toughness. In the foundry engineering phase, the failure cases seen are mostly not a result of the process itself. The mold cavity is filled properly, the size is checked to meet specifications, and shipment is smooth. Six weeks later, the part is returned—cracked, broken, deformed, or worn out—the reason being that the material specified on the drawing was not designed for the actual conditions it would withstand in use....