TECHNICAL DESCRIPTION
ABS (Acrylonitrile-Butadiene-Styrene) is a copolymer composed of two copolymers and is one of the most common polymer materials. Styrene and Acrylonitrile form a linear copolymer (SAN) that serves as a matrix. Butadiene and Styrene also form a linear copolymer (DS rubber) which acts as the filler material. The combination of the two copolymers gives ABS an excellent combination of strength, rigidity, and toughness.

GENERAL PROPERTIES
ABS has good chemical and stress-cracking resistance to inorganic salt solutions, alkalis, mineral acids (except strong oxidizing acids), and some mineral, vegetable, and animal oils. ABS is easily machined to close tolerances, is tough, dimensionally stable, and may also be thermoformed. Petroleum-based oils, solvents, and paints SHOULD NOT BE USED, as they will case the material to craze. ABS is also one of the few non-metallic materials which can be readily electroplated (after an electroless plating surface has been applied using a selective etching process).

 
TYPICAL PROPERTIES OF ABS
PHYSICAL
ASTM or UL test Property ABS
D792 Density (lb/in3)
(g/cm3)
 0.0383
 1.043
D570 Water Absorption, 24 hrs (%) -
MECHANICAL
D638 Tensile Strength (psi) 6,500
D638 Tensile Modulus (psi) 340,000
D638 Tensile Elongation at Break (%) 25
D790 Flexural Strength (psi) 11,000
D790 Flexural Modulus (psi) 320,000
D695 Compressive Strength (psi) -
D695 Compressive Modulus (psi) -
D785 Hardness, Rockwell R105
D256 IZOD Notched Impact (ft-lb/in) 7.0
THERMAL
D696

Coefficient of Linear Thermal Expansion
(x 10-5 in./in./°F)

5.3
D648 Heat Deflection Temp (°F/°C) at 264 psi 215/102
D3418 Melting Temp (°F/°C) -/-
- Max Operating Temp (°F/°C) 140/60
C177

Thermal Conductivity
(BTU-in/ft2-hr-°F)
(x 10-4 cal/cm-sec-°C)


 -3
 -3

UL94 Flammability Rating H-B
ELECTRICAL
D149 Dielectric Strength (V/mil) short time, 1/8” thick -
D150 Dielectric Constant at 60 Hz -
D150 Dissipation Factor at 60 Hz -
D257 Volume Resistivity (ohm-cm) at 50% RH 1015

Note: The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control.

All values a 73°F (23°C) unless otherwise noted.

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