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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 +73°F ISO 179-1eU 35 ft.lb/in²
Notched, at +73°F ISO 179-1eA 4.7 ft.lb/in²
Tensile elongation
At break (5 mm/min), 73°F ISO 527 1 %
At break (5 mm/min), 140°F ISO 527 1.1 %
At break (5 mm/min), 195°F ISO 527 1.2 %
At break (5 mm/min), 250°F ISO 527 2.3 %
At break (5 mm/min), 300°F ISO 527 2.5 %
Tensile strength
At break (5 mm/min), 73°F ISO 527 48000 psi
At break (5 mm/min), 140°F ISO 527 42000 psi
At break (5 mm/min), 195°F ISO 527 37500 psi
At break (5 mm/min), 250°F ISO 527 27000 psi
At break (5 mm/min), 300°F ISO 527 20250 psi
Elastic modulus
Tensile (1 mm/min), 73°F ISO 527 5400 kpsi
Tensile (1 mm/min), 140°F ISO 527 4800 kpsi
Tensile (1 mm/min), 195°F ISO 527 4050 kpsi
Tensile (1 mm/min), 250°F ISO 527 2400 kpsi
Tensile (1 mm/min), 300°F ISO 527 1380 kpsi
Thermal properties Standard Value Measure Units
Coefficient of linear thermal expansion (CLTE)
+30°C to +100°C (longitudinal) ISO 11359 3 × 10ˉ⁶ Kˉ¹
+30°C a +100°C (transversal) ISO 11359 25 × 10ˉ⁶ Kˉ¹
VICAT - Softening point
50N (heating rate 120°C/h) ISO 306 527 °F
HDT - Heat Deflection Temperature
0.45 MPa ISO 75 572 °F
1.81 MPa ISO 75 554 °F
Electrical properties Standard Value Measure Units
Electrical resistivity
Surface, dry ASTM D 257 / D 4496 1E1 ohm
1.5 mm thickness UL 94 1E2
Dielectric strength (short period)
2 mm thickness, 23°C, dry ASTM D 149 76 V/mil
Melt Temperature Standard Value Measure Units
Suggested melt temperature --- 610 ÷ 655 °F
Mould Temperature Standard Value Measure Units
Suggested mould temperature --- 300 ÷ 340 °F
Storage
PAY ATTENTION! Material is prone to absorb moisture.
Drying conditions (hot air dessiccator)
Predrying needed. At least 4 hours at 250 ÷ 265°F
Injection speed
Injection speed: medium. Setting an injection profile should improve moulding.
Hot runners
Usage of hot runner: to be evaluated