Polycarbonate (PC) CNC Machining

2026-03-01      

Mechanical properties

Density: 1.18-1.22 g/cm3 Linear expansion: 3.8×10-5 cm/°C Heat deflection temperature: 135°C Low temperature -45°C

Polycarbonate is colorless and transparent, heat resistant, impact resistant, flame retardant BI grade, and has good mechanical properties within the common use temperature. Compared with the performance close to polymethyl methacrylate, polycarbonate has good impact resistance, high refractive index, good processing performance, and UL94 V-2 level flame retardant performance without additives. However, polymethyl methacrylate is less expensive compared to polycarbonate and can be produced in large devices by ontogenic polymerization.

The abrasion resistance of materials is relative, and when comparing ABS materials with PC materials, the abrasion resistance of PC materials is better. However, compared to most plastic materials, polycarbonate is relatively poor in abrasion resistance and is in the middle to lower level, so some polycarbonate devices used for wear and tear applications require special treatment of the surface.