GRAUTS materials
GRAUTS HPP+40%GF
A high-performance polyolefin with 40 % special glass-fibre reinforcement for printing with FFF/FDM/GFM technologies. The material was developed for mechanical and electrical engineering: the reinforcement increases the stiffness of the filament, its heat resistance and chemical resistance. Suitable for precise parts thanks to shrinkage of 0 / 0.05 % in the longitudinal and transverse directions.
6,350 MPa
Tensile modulus, ISO 527
158 °C
Heat deflection temperature at 0.45 MPa, ISO 75
4 %
Elongation at break, ISO 527
1.23 g/cm³
Density, ISO 1183
Key features
High strength across the fibre direction; high impact strength; resistance to hydrolysis, acidic and alkaline media and alcohols; can be combined with an elastic filament in rigid-soft joints.
Confirmed properties from the technical data sheet
| Property | Test result | Test method |
|---|---|---|
| Density, g/cm³ | 1.23 | ISO 1183 |
| Water absorption in 24 hours, % | 0.02 | ISO 62* |
| Water absorption at saturation, % | 0.1 | ISO 62* |
| Processing shrinkage, longitudinal / transverse, % | 0 / 0.05 | ISO 294-4* |
| Warpage of a 150 × 100 × 2 mm plate, mm | 0.03 | GRAUTS in-house method |
| Notched Izod impact strength at 23 °C, dry / cond., kJ/m² | 26 / — | ISO 180/A |
| Notched Charpy impact strength at 23 °C, dry / cond., kJ/m² | 25 / — | ISO 179-1/1eA |
| Unnotched Charpy impact strength at 23 °C, dry / cond., kJ/m² | 75 / — | ISO 179-1/1eU |
| Tensile modulus, 1 mm/min, dry / cond., MPa | 6350 / — | ISO 527-1/-2 |
| Stress at yield, 50 mm/min, dry / cond., MPa | 82 / — | ISO 527-1/-2 |
| Stress at break, dry / cond., MPa | 81 / — | ISO 527-1/-2 |
| Elongation at break, dry / cond., % | 4 / — | ISO 527-1/-2 |
| Flexural strength, MPa | — | ISO 178 |
| Flexural modulus at 23 °C, MPa | — | ISO 178 |
| Vicat softening temperature, 50 K/h, 10 N, °C | 160 | ISO 306 |
| Vicat softening temperature, 50 K/h, 50 N, °C | 105 | ISO 306 |
| Heat deflection temperature at 0.45 MPa, °C | 158 | ISO 75-1/-2 |
| Heat deflection temperature at 1.81 MPa, °C | 142 | ISO 75-1/-2 |
| Flammability class at 0.4 / 0.8 / 1.6 / 3.2 mm | — / — / — / — | UL94* |
| Spiral flow at 400 / 1000 / 1600 bar and 285 °C, cm | 13 / 30 / 45 | GRAUTS in-house method |
Application per the technical data sheet
Created for mechanical engineering, electrical engineering and the automotive industry as a replacement for PA+GF/CF. Thanks to 40 % glass fibre, the filament gains much higher stiffness along with better heat resistance and chemical resistance.
Advanced materials for additive manufacturing
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