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LARAMID K/40 HM

Family: LARAMID
Base resin:Semi-aromatic polyamide (PPA)
General information
Compound based on Semi-aromatic polyamide (PPA). Carbon fibres. High tensile modulus. PFAS-free product.
The products mentioned herein are not suitable for applications in contact with foodstuffs or for potable water transportation, or for toy manufacturing.
The products mentioned herein are not suitable for applications in the pharmaceutical, medical or dental sector.
Project challenges
  • - High temperature usage
  • - Chemical stability
Additives
  • - Carbon fibres
Process types
  • - Injection moulding
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Technical datasheets
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Technical characteristics
Physical properties Standard Value Measure Units
Density ISO 1183 1.37 g/cm³
Linear shrinkage at moulding
Longitudinal (2.0mm/60MPa) ISO 294-4 0.05 ÷ 0.20 %
Transversal (2.0mm/60MPa) ISO 294-4 0.40 ÷ 0.55 %
Dimensional stability --- 60
Moisture absorption
Saturation, in air ISO 62-4 0.85 %
Mechanical properties Standard Value Measure Units
CHARPY impact strength
Unnotched, at +23°C ISO 179-1eU 70 kJ/m²
Notched, at +23°C ISO 179-1eA 10 kJ/m²
Tensile elongation
At break (5 mm/min), 23°C ISO 527 1 %
At break (5 mm/min), 60°C ISO 527 1.1 %
At break (5 mm/min), 90°C ISO 527 1.2 %
At break (5 mm/min), 120°C ISO 527 2.3 %
At break (5 mm/min), 150°C ISO 527 2.5 %
Tensile strength
At break (5 mm/min), 23°C ISO 527 330 MPa
At break (5 mm/min), 60°C ISO 527 290 MPa
At break (5 mm/min), 90°C ISO 527 260 MPa
At break (5 mm/min), 120°C ISO 527 185 MPa
At break (5 mm/min), 150°C ISO 527 140 MPa
Elastic modulus
Tensile (1 mm/min), 23°C ISO 527 37000 MPa
Tensile (1 mm/min), 60°C ISO 527 33000 MPa
Tensile (1 mm/min), 90°C ISO 527 28000 MPa
Tensile (1 mm/min), 120°C ISO 527 17000 MPa
Tensile (1 mm/min), 150°C ISO 527 9500 MPa
Thermal properties Standard Value Measure Units
Coefficient of linear thermal expansion (CLTE)
+30°C to +100°C (longitudinal) ISO 11359 3 × 10⁶ K¹
+30°C a +100°C (transversal) ISO 11359 25 × 10⁶ K¹
VICAT - Softening point
50N (heating rate 120°C/h) ISO 306 275 °C
HDT - Heat Deflection Temperature
0.45 MPa ISO 75 300 °C
1.81 MPa ISO 75 290 °C
Electrical properties Standard Value Measure Units
Electrical resistivity
Surface, dry ASTM D 257 1E1 ohm
1.5 mm thickness UL 94 1E2
Dielectric strength (short period)
2 mm thickness, 23°C, dry ASTM D 149 3 kV/mm
Melt Temperature Standard Value Measure Units
Suggested melt temperature --- 320 ÷ 345 °C
Mould Temperature Standard Value Measure Units
Suggested mould temperature --- 150 ÷ 170 °C
Storage
PAY ATTENTION! Material is prone to absorb moisture.
Drying conditions (hot air dessiccator)
Predrying needed. At least 4 hours at 120 ÷ 130°C
Injection speed
Injection speed: medium. Setting an injection profile should improve moulding.
Hot runners
Usage of hot runner: to be evaluated