Material comparison

ABS vs ASA: which one?

A tough engineering plastic that resists impact and heat. Resists sun, weather and chemicals; the material for outdoor use. So which one is right for your project? Compare the values, strengths and weaknesses side by side.

Sample part made from ABSMost popular

ABS

Acrylonitrile butadiene styrene (ABS+)

ABS is strong, durable and scratch resistant. These properties make it a popular choice for both prototypes and end products in automotive parts, electronic housings and consumer goods.

Strength3
Stiffness3
Toughness / impact4
Heat resistance3
Chemical resistance3
UV / outdoor2
Detail and surface3
Ease of production3
ABS page →
Sample part made from ASAMost popular

ASA

Acrylonitrile styrene acrylate

ASA has properties similar to ABS but is far more resistant to UV, weather and chemicals. It does not yellow or fade in sunlight and gives a smooth surface finish.

Strength3
Stiffness3
Toughness / impact4
Heat resistance3
Chemical resistance4
UV / outdoor5
Detail and surface3
Ease of production3
ASA page →

Values

Technical comparison

PropertyABSASA
Density1.06 g/cm³1.07 g/cm³
Tensile strength40 MPa50 MPa
Elongation at break30 %30 %
Modulus (stiffness)1.2 GPa1.85 GPa
Heat deflection (0.45 MPa)73 °C88 °C
  • ASA has higher tensile strength: 50 MPa, versus 40 MPa for ABS.
  • ASA is more heat resistant: 88 °C, versus 73 °C for ABS.
  • In terms of flexibility, ABS (30 %) and ASA (30 %) are close.
  • ASA is stiffer: 1.849 GPa, versus 1.203 GPa for ABS.

Decision

Which one, and when?

Choose ABS if…

  • you are making automotive parts
  • you are making electronic housings
  • you are making toys and consumer products

Choose ASA if…

  • UV / outdoor matters more
  • Chemical resistance matters more
  • you are making exterior and garden products
  • you are making signage and accessories
  • you are making automotive exterior parts

Good to know

ABS vs ASA: frequently asked questions

Which is stronger: ABS or ASA?

ASA has higher tensile strength: 50 MPa, versus 40 MPa for ABS.

Which is more heat resistant: ABS or ASA?

ASA is more heat resistant: 88 °C, versus 73 °C for ABS.

Which is easier to produce?

Both materials are similarly easy to produce.

Which is more economical?

In general, ABS is more economical. The exact price is set in the quotation based on part size, quantity and technology.

Which one is right for your part?

Tell us the operating conditions; let's decide together which of the two fits, or find a better alternative.