Plastic CNC Machining: Guide to Engineering Plastics
While metal CNC machining is common, plastic CNC machining is equally important for many applications. Engineering plastics offer unique properties including chemical resistance, electrical insulation, lightweight, and biocompatibility.
Common Engineering Plastics for CNC Machining
| Material | Tensile Strength | Max Temp | Key Properties | Applications |
|---|---|---|---|---|
| PEEK | 100 MPa | 260°C | High temp, chemical resistant, biocompatible | Medical implants, aerospace, semiconductor |
| Delrin (Acetal) | 69 MPa | 100°C | Low friction, stiff, good machinability | Gears, bearings, bushings |
| Nylon 6/6 | 83 MPa | 120°C | Tough, wear resistant, good impact strength | Structural parts, wear components |
| PTFE (Teflon) | 28 MPa | 260°C | Non-stick, chemical inert, low friction | Seals, gaskets, chemical equipment |
| UHMWPE | 40 MPa | 80°C | Wear resistant, impact resistant, food safe | Wear strips, cutting boards, medical |
| Acrylic (PMMA) | 70 MPa | 70°C | Optically clear, UV stable | Display, lighting, windows |
| Polycarbonate | 65 MPa | 125°C | Impact resistant, transparent | Safety equipment, enclosures |
Plastic vs Metal CNC Machining
- Plastics machine faster (higher speeds, lower tool wear)
- No corrosion concerns
- Lighter weight (80% lighter than steel)
- Electrical and thermal insulation
- Chemical resistance
JRCNC machines all common engineering plastics. Contact us for your plastic CNC machining project.
