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Dry 50% Glass Fiber (50 GF) PA 4/6

Dry 50 GF PA 4/6 is a grade of PA 4/6. It has the highest strength and lowest ductility compared to the other variants of PA 4/6. The graph bars on the material properties cards below compare dry 50 GF PA 4/6 to: polyamide plastics (top), all thermoplastics (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

Mechanical Properties

Elastic (Young's, Tensile) Modulus

16 GPa 2.3 x 106 psi

Elongation at Break

2.5 %

Flexural Modulus

14 GPa 2.0 x 106 psi

Flexural Strength

350 MPa 51 x 103 psi

Tensile Strength: Ultimate (UTS)

250 MPa 36 x 103 psi

Thermal Properties

Glass Transition Temperature

75 °C 170 °F

Heat Deflection Temperature At 1.82 MPa (264 psi)

290 °C 550 °F

Heat Deflection Temperature At 455 kPa (66 psi)

290 °C 550 °F

Melting Onset (Solidus)

300 °C 560 °F

Thermal Expansion

0.3 µm/m-K

Vicat Softening Temperature

290 °C 550 °F

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 Hz

4.3

Dielectric Constant (Relative Permittivity) At 1 MHz

4.0

Dielectric Strength (Breakdown Potential)

30 kV/mm 1.2 V/mil

Electrical Resistivity Order of Magnitude

12 10x Ω-m

Otherwise Unclassified Properties

Density

1.6 g/cm3 100 lb/ft3

Limiting Oxygen Index (LOI)

22 %

Water Absorption After 24 Hours

1.9 %

Water Absorption At Saturation

6.8 %

Common Calculations

Stiffness to Weight: Axial

5.5 points

Stiffness to Weight: Bending

52 points

Strength to Weight: Axial

43 points

Strength to Weight: Bending

54 points

Followup Questions

Further Reading

Reinforced Plastics Durability, Geoffrey Pritchard (editor), 1999

SPI Plastics Engineering Handbook of the Society of the Plastics Industry, Inc., 5th ed., Michael L. Berins (editor), 2000

Modern Plastics Handbook, Charles A. Harper (editor), 1999

Plastics Materials, 7th ed., J. A. Brydson, 1999