Material
SLS Polypropylene
SLS polypropylene is a lightweight, ductile, chemically resistant plastic that tolerates repeated bending. It is suited to durable functional parts, though it softens at around 60 °C under load.
Manufacturing processes
About
SLS polypropylene (PP) is a lightweight, semi-rigid plastic with excellent chemical resistance, low moisture absorption, and good fatigue resistance.
It is comparable to injection-molded PP in strength (about 29 MPa) and density (about 0.9 g/cm³), but stretches far less before breaking (roughly 15–35% depending on powder and direction, lower across the layers, versus 100% or more for molded PP). Parts soften under load at around 60 °C, degrade in prolonged sunlight, and are difficult to paint.
SLS polypropylene works well for clips, hinges, and other parts that bend repeatedly, as well as orthotic insoles.
Technical Details
- Accuracy
- ±0.3% (lower limit of ±0.3 mm)
- Density
- 0.89 g/cm³
- Min. wall thickness
- 0.8 mm
Technical Properties
- Tensile strength
- 21.4 - 29 MPa
- Tensile modulus
- 907 - 1600 MPa
- Tensile elongation
- 14 - 20%
- Flexural strength
- 22.8 MPa
- Flexural modulus
- 698 MPa
- HDT (0.45 MPa)
- 100°C
- HDT (1.8 MPa)
- 60°C
- Default layer height
- 0.1 mm
- Default infill
- 100%
- Embossing
- min. 1.5 mm
- Engraving
- min. 1.5 mm
- Interlocking parts
- Yes
- Warping risk
- High
- Maximum printing dimensions
- 450 × 450 × 450 mm