GRAUTS materials
GRAUTS HPP+25%GF
A high-performance polyolefin with 25 % special glass fibre. The higher share of reinforcement gives a tensile modulus of 4300 MPa and a stress at break of 60 MPa while keeping low density and good interlayer adhesion.
4,300 MPa
Tensile modulus, ISO 527
155 °C
Heat deflection temperature at 0.45 MPa, ISO 75
6 %
Elongation at break, ISO 527
1.09 g/cm³
Density, ISO 1183
Key features
Minimal shrinkage; good bed adhesion; high impact strength; resistance to hydrolysis and most acids and alkalis; high strength across the fibre.
Confirmed properties from the technical data sheet
| Property | Test result | Test method |
|---|---|---|
| Density, g/cm³ | 1.09 | ISO 1183 |
| Water absorption in 24 hours / at saturation, % | 0.02 / 0.1 | ISO 62* |
| Processing shrinkage, longitudinal / transverse, % | 0.1 / 0.4 | ISO 294-4* |
| Warpage of a 150 × 100 × 2 mm plate, mm | 3.5 | GRAUTS in-house method |
| Notched Izod impact strength at 23 °C, kJ/m² | 28 | ISO 180/A |
| Notched Charpy impact strength at 23 °C, kJ/m² | 27 | ISO 179-1/1eA |
| Unnotched Charpy impact strength at 23 °C, kJ/m² | 65 | ISO 179-1/1eU |
| Tensile modulus, MPa | 4300 | ISO 527-1/-2 |
| Stress at yield / at break, MPa | 63 / 60 | ISO 527-1/-2 |
| Elongation at break, % | 6 | ISO 527-1/-2 |
| Heat deflection temperature at 0.45 / 1.81 MPa, °C | 155 / 127 | ISO 75-1/-2 |
| Spiral flow at 400 / 1000 / 1600 bar and 285 °C, cm | 10 / 25 / 38 | GRAUTS in-house method |
Application per the technical data sheet
For rigid structural parts, load-bearing elements, industrial tooling and equipment components working under increased mechanical and thermal loads. The main advantage is high stiffness, heat resistance and geometric stability.
Advanced materials for additive manufacturing
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