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Ensinger PEI

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Polyplastics Duracon® M140-44/M140S Acetal Co-polymer (POM), Standard, High flow
Categories: Polymer; Thermoplastic; Acetal (Polyoxymethylene, POM); Acetal Copolymer, Unreinforced

Material Notes: DURACON® is a crystalline thermoplastic acetal copolymer. The primary raw material trioxane, a trimer of formaldehyde.

The thermoplastic adopts a copolymer structure in which polyoxymethylene (-C-O) and carbon-carbon (-C-C- bond) comonomer groups are incorporated into its main chain. Therefore the copolymer has superior chemical and thermal stability, compared with acetal homopolymer.

Acetal co-polymer is well-balanced in terms of mechanical, chemical and thermal properties, and its superior moldability allows it to be widely employed in various industrial fields.

Information provided by PolyPlastics.

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Physical PropertiesOriginal ValueComments
Density 1.41 g/ccISO 1183
 
Mechanical PropertiesOriginal ValueComments
Tensile Strength, Ultimate 62.0 MPaISO 527-1, 2
Elongation at Break 33 %ISO 527-1, 2
Tensile Modulus 2.70 GPaISO 527-1, 2
Flexural Strength 87.0 MPaISO 178
Flexural Modulus 2.50 GPaISO 178
Charpy Impact, Notched 0.550 J/cm²ISO 179/1eA
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 1.00e+14 ohm-cmIEC 60093
Surface Resistance 1.00e+16 ohmIEC 60093
Dielectric Strength 19.0 kV/mmIEC 60243-1
 
Thermal PropertiesOriginal ValueComments
CTE, linear 110 µm/m-°C
@Temperature 23.0 - 55.0 °C
ISO 11359-2
CTE, linear, Transverse to Flow 110 µm/m-°C
@Temperature 23.0 - 55.0 °C
ISO 11359-2
Deflection Temperature at 1.8 MPa (264 psi) 100 °CISO 75-1, 2
Flammability, UL94 HB

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