ASA vs. CA

Both ASA and CA are thermoplastics. There are 12 material properties with values for both materials. Properties with values for just one material (19, in this case) are not shown.

For each property being compared, the top bar is ASA and the bottom bar is CA.

Acrylonitrile Styrene Acrylate (ASA)Cellulose Acetate (CA)

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, %		6.0
Elongation at Break, %		25 to 30

Tensile Strength: Ultimate (UTS), MPa		55
Tensile Strength: Ultimate (UTS), MPa		30 to 37

Thermal Properties

Glass Transition Temperature, °C		100
Glass Transition Temperature, °C		230

Specific Heat Capacity, J/kg-K		1300
Specific Heat Capacity, J/kg-K		1500

Thermal Conductivity, W/m-K		0.18
Thermal Conductivity, W/m-K		0.25

Thermal Expansion, µm/m-K		95
Thermal Expansion, µm/m-K		14

Vicat Softening Temperature, °C		96
Vicat Softening Temperature, °C		100 to 110

Electrical Properties

Electrical Resistivity Order of Magnitude, 10^x Ω-m		13
Electrical Resistivity Order of Magnitude, 10^x Ω-m		16

Otherwise Unclassified Properties

Density, g/cm³		1.1
Density, g/cm³		1.3

Common Calculations

Strength to Weight: Axial, points		14
Strength to Weight: Axial, points		6.4 to 7.9

Strength to Weight: Bending, points		30
Strength to Weight: Bending, points		17 to 19

Thermal Diffusivity, mm²/s		0.13
Thermal Diffusivity, mm²/s		0.13