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CA vs. PAR

Both CA and PAR are thermoplastics. There are 19 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, % 25 to 30
50
Flexural Modulus, GPa 1.7 to 2.1
2.1
Flexural Strength, MPa 40 to 55
75
Tensile Strength: Ultimate (UTS), MPa 30 to 37
67

Thermal Properties

Glass Transition Temperature, °C 230
190
Heat Deflection Temperature At 1.82 MPa (264 psi), °C 65 to 75
170
Heat Deflection Temperature At 455 kPa (66 psi), °C 75 to 85
180
Maximum Temperature: Decomposition, °C 250
470
Specific Heat Capacity, J/kg-K 1500
1200
Thermal Conductivity, W/m-K 0.25
0.18
Thermal Expansion, µm/m-K 14
88

Electrical Properties

Dielectric Strength (Breakdown Potential), kV/mm 15
16
Electrical Resistivity Order of Magnitude, 10x Ω-m 16
12

Otherwise Unclassified Properties

Density, g/cm3 1.3
1.2
Limiting Oxygen Index (LOI), % 17
35
Water Absorption After 24 Hours, % 2.3
0.26

Common Calculations

Strength to Weight: Axial, points 6.4 to 7.9
16
Strength to Weight: Bending, points 17 to 19
31
Thermal Diffusivity, mm2/s 0.13
0.13