Unfilled Polyetheretherketone (PEEK)
CROW logo
Polyacetal (POM), General Purpose Grades
 

Thermo-Physical Properties

PROPERTYUNITVALUE / RANGE
Melting Point °C178
Density g mL-1 1.42
Coefficient of Thermal Expansion x 10-5cm / (cm °C) 0.9 - 19.8
Heat Deflection Temperature, 0.5 MPa °C 163 - 170
Heat Deflection Temperature, 1.8 MPa °C -
Thermal ConductivityW / mK0.29 - 0.36
Rockwell Hardness,  M Scalen/a R117 - R120
    
 

Mechanical Properties at 23 °C

PROPERTY UNITVALUE / RANGE
Tensile Strength, Yield at 23 C MPa 67 - 73
Tensile Strength, Break at 23 C MPa 66 - 73
Elongation, Yield % 8 - 25
Elongation, Break % 15 - 80
Tensile Modulus at 23 CMPa 2940 - 3560
Flexural Strength, Yield MPa  
Flexural Modulus  MPa 2790 - 3380
Compressive Strength MPa96 - 115
Izod Notched J / m 59 - 120
Izod Unnotched J / m > 1630 (or NB)
 

Electrical Properties

PROPERTY UNITVALUE / RANGE
Volume Resistivity
Ohm-cm1E+14 - 1E+15
 Dielectric Strength V/mm x 104 1.5 - 2.0
Dielectric Constant @ 1 MHz n/a 3.6 - 3.7
Dissipation Factor @ 1 MHz n/a, x 10-4 50 - 60
 

Other Properties

PROPERTY UNITVALUE / RANGE
Processing Temperature
°C115 - 220
Mold Shrinkage % 0.001 - 0.025
Continuous Service Temperature °C 100 -105
Water Absorption, 24 hr. Immersion% 0.27 - 0.43
back to top