Best for
Carbon-filled
- Prepreg lay-up molds
- Precast-concrete formwork
- Weld fixtures
- End-of-arm tooling
Glass-filled
- Coil forms and terminal blocks
- Transformer and fuse-cap bodies
- Lighting brackets
- Headlamp bezels
Not the right choice for
- Contact with strong acids or alkalis, such as caustic cleaners
PET as a printed part
Not the same plastic as PETG, despite the name: PETG is PET modified with glycol.
Key properties
| Tensile strength | 49 to 74 MPa carbon-filled, 60 to 71 MPa glass-filled |
|---|---|
| Heat deflection | 76 to 108 C at 0.45 MPa, 80 C at 1.80 MPa carbon-filled; 82 C at 0.45 MPa, 72 C at 1.80 MPa glass-filled |
| Water uptake | 0.37 to 0.53 percent carbon-filled, 0.32 percent glass-filled |
What to use instead
- PETG when you do not need the extra stiffness.
- Nylon (PA12) when the part slides or wears in service.
The FDM material selector narrows the whole range by operating temperature, load, chemical exposure, and budget.