Acrylonitrile Butadiene Styrene (ABS)

General Meterial Specs
ABS = Acrylonitrile Butadiene Styrene 		ABS
Density (Specific Gravity) 1.08 g/cm³
Izod notched impact strength at 23°c 400 – 420 j/m
Izod notched impact strength at -20°c 230 – 280 j/m
Vicat softening temperature 97 – 101°c
Heat deflection temperature 80 – 84°c
Tensile strength 30 – 40 MPa
Flexural modulus 2.0 – 2.2 GPa
Flammability rating HB
Forming temperature 140 – 190°c
Melt flow index 6.0 g/10min
Mould shrinkage (linear) 0.4 – 0.7%

ABS (Acrylonitrile Butadiene Styrene) is a very popular material thanks to its low cost and good mechanical properties. ABS is known for its toughness and impact resistance, it has a higher glass transition temperature, which means the material can withstand much higher temperatures before it begins to deform. This makes ABS a great choice for outdoor or high temperature applications.

PROS

  • Good heat resistance
  • Hard for a thermoplastic and is reasonably tough (maintains impact resistance to low temperatures).
  • It is easily processed (may be electroplated) and easily bonded
  • ABS has a good gloss surface finish.

CONS

  • Poor solvent and fatigue resistance. 
  • Poor UV resistance unless protected.
  • Maximum continuous use temperature approx. 70 °C ( 160 °F ).
  • Poor bearing properties (high friction and wear). 
  • High smoke evolution.

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