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High Impact ABS

High impact ABS is a grade of ABS. It has the lowest strength compared to the other variants of ABS. The graph bars on the material properties cards below compare high impact ABS to: styrenic 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

2.0 GPa 0.29 x 106 psi

Elongation at Break

13 %

Flexural Modulus

2.3 GPa 0.34 x 106 psi

Flexural Strength

72 MPa 10 x 103 psi

Impact Strength: Notched Izod

370 J/m 7.0 ft-lb/in

Rockwell R Hardness

100

Tensile Strength: Ultimate (UTS)

37 MPa 5.4 x 103 psi

Thermal Properties

Heat Deflection Temperature At 1.82 MPa (264 psi)

91 °C 200 °F

Heat Deflection Temperature At 455 kPa (66 psi)

99 °C 210 °F

Thermal Expansion

95 µm/m-K

Other Material Properties

Density

1.0 g/cm3 64 lb/ft3

Dielectric Constant (Relative Permittivity) At 1 Hz

3.2

Dielectric Strength (Breakdown Potential)

15 kV/mm 0.57 V/mil

Common Calculations

Stiffness to Weight: Axial

1.1 points

Stiffness to Weight: Bending

41 points

Strength to Weight: Axial

10 points

Strength to Weight: Bending

24 points

Thermal Shock Resistance

14 points

Followup Questions

Further Reading

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