CNC machining can work with a wide range of metals and engineering plastics, making material selection an important part of achieving the required performance, quality, and manufacturing efficiency. The right material depends on factors such as strength, weight, corrosion resistance, thermal properties, dimensional stability, machinability, surface finish, and cost.
Common CNC machining materials include aluminum, stainless steel, carbon and alloy steel, brass, bronze, copper, titanium, and engineering plastics such as POM (Delrin), PEEK, PTFE, nylon, polycarbonate, and acrylic. Each material has different characteristics that influence cutting conditions, tooling, achievable features, surface quality, and overall production efficiency.
Material selection should also be considered together with part geometry, tolerances, quantities, finishing, and operating conditions. For repeat production, choosing a material with suitable machinability and consistent availability can help improve process stability and manufacturing efficiency.
At TDB Hanoi, we review material requirements together with customer drawings and technical specifications before production. Customers may specify the required material grade, and where material certificates or traceability documentation are required, these requirements can be reviewed as part of the RFQ and manufacturing process.