GRAUTS materials
GRAUTS HPP+15%GF
A high-performance polyolefin with 15 % special glass fibre. The material is intended for rigid, impact-resistant parts with low shrinkage, low warpage and good interlayer adhesion; stiffer variants are also provided in the GRAUTS range.
2,320 MPa
Tensile modulus, ISO 527
134 °C
Heat deflection temperature at 0.45 MPa, ISO 75
11 %
Elongation at break, ISO 527
1.01 g/cm³
Density, ISO 1183
Key features
Low shrinkage; good bed adhesion; high impact strength; resistance to hydrolysis and most acids and alkalis; low density.
Confirmed properties from the technical data sheet
| Property | Test result | Test method |
|---|---|---|
| Density, g/cm³ | 1.01 | ISO 1183 |
| Water absorption in 24 hours / at saturation, % | 0.02 / 0.1 | ISO 62* |
| Processing shrinkage, longitudinal / transverse, % | 0.2 / 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 | 34 | ISO 180/A |
| Notched Charpy impact strength at 23 °C, kJ/m² | 33 | ISO 179-1/1eA |
| Unnotched Charpy impact strength at 23 °C, kJ/m² | 76 | ISO 179-1/1eU |
| Tensile modulus, MPa | 2320 | ISO 527-1/-2 |
| Stress at yield / at break, MPa | 42 / 33 | ISO 527-1/-2 |
| Elongation at break, % | 11 | ISO 527-1/-2 |
| Heat deflection temperature at 0.45 / 1.81 MPa, °C | 134 / 84 | ISO 75-1/-2 |
| Spiral flow at 400 / 1000 / 1600 bar and 285 °C, cm | 11 / 25 / 38 | GRAUTS in-house method |
Application per the technical data sheet
For more heavily loaded structural parts, fasteners, tooling and equipment components. The main advantage is increased stiffness and dimensional stability under mechanical and thermal loads.
Advanced materials for additive manufacturing
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