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Elmet Technologies

Kolon Kocetal® K700 General Purpose Grade Acetal Copolymer
Categories: Polymer; Thermoplastic; Acetal (Polyoxymethylene, POM); Acetal Copolymer, Unreinforced

Material Notes: Thermal properties: Kocetal has excellent heat stability; heat degradation is little under long term and high temperature application, compared to other POM. Maximum applicable temperature of products of Kocetal are short term: 140-150C and long term: 100-120C.

Mechanical Properties: Kocetal is an engineering plastic that has excellent strength, stiffness and wear endurance. Also, it offers an excellent balance of several properties. For example, mechanical properties are stable in the practical temperature zone (-50C to 80C), compared to Nylon and PBT resins. Although it has slightly lower initial strength, compared to homopolymer, the long term properties of "elongation at break and impact strength" are superior.

Electrical Properties: Kocetal has excellent electrical properties. Its electrical properties, volume resistivity, dielectric constant, dissipation factor and dielectric strength change little with temperature. It also has a feature of good anti-pollution properties on electrical contact. Kocetal has such a permanent anti-static grade that can be applied to the specifics.

Chemical Properties: Kocetal has excellent chemical resistance to organic chemicals, oils, fats and detergents. It is also strongly resistant to inorganic chemicals except strong acids.

Information provided by US distributor, API-Kolon.

Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Density 1.41 g/cc0.0509 lb/in³ASTM D790
Water Absorption 0.22 %0.22 %ASTM D570
Linear Mold Shrinkage 0.020 cm/cm0.020 in/inASTM D955
Melt Flow 27 g/10 min27 g/10 minASTM D1238
 
Mechanical PropertiesMetricEnglishComments
Hardness, Rockwell M 8080ASTM D785
Tensile Strength, Ultimate 64.7 MPa9390 psiASTM D638
Elongation at Break 45 %45 %ASTM D638
Flexural Yield Strength 97.1 MPa14100 psiASTM D790
Flexural Modulus 2.70 GPa391 ksiASTM D790
Izod Impact, Notched 0.549 J/cm1.03 ft-lb/inASTM D256
Coefficient of Friction 0.220.22ASTM D1894
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity 1.00e+14 ohm-cm1.00e+14 ohm-cmASTM D257
Surface Resistance 1.00e+16 ohm1.00e+16 ohmASTM D257
Dielectric Constant 3.7
@Frequency 1e+6 Hz
3.7
@Frequency 1e+6 Hz
ASTM D150
Dielectric Strength 19.0 kV/mm483 kV/inASTM D149
Dissipation Factor 0.0060
@Frequency 1e+6 Hz
0.0060
@Frequency 1e+6 Hz
ASTM D150
Arc Resistance >= 200 sec>= 200 secASTM D495
 
Thermal PropertiesMetricEnglishComments
CTE, linear 110 - 130 µm/m-°C
@Temperature 20.0 °C
61.1 - 72.2 µin/in-°F
@Temperature 68.0 °F
ASTM D696
Melting Point 166 °C331 °FASTM D1525
Maximum Service Temperature, Air 100 - 120 °C212 - 248 °FLong Term
 140 - 150 °C284 - 302 °FShort Term
Deflection Temperature at 0.46 MPa (66 psi) 158 °C316 °FASTM D648
Deflection Temperature at 1.8 MPa (264 psi) 110 °C230 °FASTM D648
Vicat Softening Point 162 °C324 °FASTM D1525
Flammability, UL94 HBHB
 
Processing PropertiesMetricEnglishComments
Rear Barrel Temperature 160 - 180 °C320 - 356 °F
Middle Barrel Temperature 182 - 200 °C359 - 392 °F
Front Barrel Temperature 190 - 210 °C374 - 410 °F
Nozzle Temperature 190 - 210 °C374 - 410 °F
Melt Temperature 166 °C330 °F
Mold Temperature 60.0 - 100 °C140 - 212 °FSurface
Drying Temperature 80.0 °C176 °F
Dry Time 3 hour3 hour
Injection Pressure 68.6 - 108 MPa9950 - 15600 psi
Screw Speed 50 - 100 rpm50 - 100 rpmPurge with polyethylene/polystyrene

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PKOKZ906 / 49011

Ensinger PEI

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