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TYPICAL PROPERTIES OF ACETALS

Views:7     Author:Site Editor     Publish Time: 2020-05-08      Origin:Site

PHYSICAL


ASTM or UL testPropertyAcetal CopolymerHomopolymerAF  PTFE-filled
D792Density (lb/in³) (g/cm³) 0.051、1.410.051、1.410.054、1.50
D570Water Absorption, 24 hrs (%)0.20.20.2


MECHANICAL


ASTM or UL testPropertyAcetal CopolymerHomopolymerAF  PTFE-filled
D638 Tensile Strength (psi)  9,50011,000 8,000
D638 Tensile Modulus (psi) 400,000 450,000 435,000
D638 Tensile Elongation at Break (%)  3030 15
D790 Flexural Strength (psi) 12,000 13,000 12,000
D790 Flexural Modulus (psi) 400,000 450,000 435,000
D695 Compressive Strength (psi) 15,000 16,000 16,000
D695  Compressive Modulus (psi)400,000 450,000 350,000
D785 Hardness, Rockwell M88 / R120 M89 / R122 M85 / R115
D256 IZOD Impact Notched (ft-lb/in) 1.0 1.0 0.7


THERMAL



ASTM or UL testPropertyAcetal CopolymerHomopolymerAF  PTFE-filled
D696Coefficient of Linear Thermal Expansion (x 10-5 in./in./°F)5.40 4.70 5.00
D648 Heat Deflection Temp (°F / °C) at 264 psi 220 / 104 250 / 121 244 / 118
D3418 Melting Point Temp (°F / °C) 335 / 168 347 / 175 347 / 175
Max Operating Temp (°F / °C) 180 / 82 180 / 82 180 / 82
C177 Thermal Conductivity (BTU-in/ft²-hr-°F)
(x 10-4 cal/cm-sec-°C)
1.6
5.5
2.5
8.6
-
UL94 Flammability RatingHBHBHB


ELECTRICAL



ASTM or UL testPropertyAcetal CopolymerHomopolymerAF  PTFE-filled
D149 Dielectric Strength (V/mil) short time, 1/8" thick  420450 400
D150 Dielectric Constant at 1 MHz 3.8  3.73.1
D150 Dissipation Factor at 1 MHz 0.005 0.005 0.010
D257 Volume Resistivity (ohm-cm) at 50% RH 1015 1015 3.0 x 1016


NOTE: The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers' complete material property datasheets.All values at 73°F (23°C) unless otherwise noted.


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