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Proto3000 – 3D Engineering Solutions

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Celanese Celcon® M90™ POM, Unfilled
Categories: Polymer; Thermoplastic; Acetal (Polyoxymethylene, POM)

Material Notes: Celcon acetal copolymer grade M90Ö is a medium viscosity polymer providing optimum performance in general purpose injection molding and extrusion of thin walled tubing and thin gauge film. This grade provides overall excellent performance in many applications.

Information provided by Celanese

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Physical PropertiesOriginal ValueComments
Specific Gravity 1.41 g/ccASTM D792
Density 1.41 g/ccISO 1183
Density of Compound 1.20 g/cc
Moisture Absorption 0.200 %23°C/50%RH; ISO 62
Water Absorption at Saturation 0.75 %ISO 62
Linear Mold Shrinkage, Flow 0.020 cm/cmISO 294-4
 0.022 cm/cmASTM D955
Linear Mold Shrinkage, Transverse 0.018 cm/cmASTM D955
 0.019 cm/cmISO 294-4
Melt Flow 9.0 g/10 minASTM D1238
 8.0 g/10 min
@Load 2.16 kg,
Temperature 190 °C
[cm3/10min]; ISO 1133
 
Mechanical PropertiesOriginal ValueComments
Tensile Strength, Yield 66.0 MPa50mm/min; ISO 527-2/1A
 8800 psiASTM D638
 5000 psi
@Temperature 71.1 °C
ASTM D638
 13700 psi
@Temperature -40.0 °C
ASTM D638
Elongation at Yield 10 %50mm/min; ISO 527-2/1A
Tensile Modulus 2760 MPa50mm/min; ISO 527-2/1A
Flexural Modulus 2550 MPaISO 178
 375000 psiASTM D790
 100000 psi
@Temperature 104 °C
ASTM D790
 180000 psi
@Temperature 71.1 °C
ASTM D790
Izod Impact, Notched 1.30 ft-lb/inASTM D256
 1.00 ft-lb/in
@Temperature -40.0 °C
ASTM D256
Izod Impact, Notched (ISO) 5.70 kJ/m²ISO 180/1A
Charpy Impact Unnotched 188 kJ/m²ISO 179/1eU
 181 kJ/m²
@Temperature -30.0 °C
ISO 179/1eU
Charpy Impact, Notched 6.00 kJ/m²ISO 179/1eA
 6.00 kJ/m²
@Temperature -30.0 °C
ISO 179/1eA
Tensile Creep Modulus, 1 hour 2450 MPaISO 899-1
Tensile Creep Modulus, 1000 hours 1350 MPaISO 899-1
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 1.00e+14 ohm-cmASTM D257
 8.00e+14 ohm-cmIEC 60093
Surface Resistance 3.00e+16 ohmIEC 60093
 
Thermal PropertiesOriginal ValueComments
CTE, linear, Parallel to Flow 120 µm/m-°CISO 11359-2
CTE, linear, Transverse to Flow 120 µm/m-°CISO 11359-2
Specific Heat Capacity 2.21 J/g-°C
Thermal Conductivity 0.155 W/m-K
Melting Point 165 °C10°C/min; ISO 11357-1,-2,-3
 329 °FASTM D3418
Deflection Temperature at 0.46 MPa (66 psi) 158 °CISO 75-1, -2
Deflection Temperature at 1.8 MPa (264 psi) 101 °CISO 75-1, -2
 230 °FASTM D648
 
Processing PropertiesOriginal ValueComments
Processing Temperature 80.0 - 120 °Ccavity
 180 - 200 °Chot runner
Zone 1 170 - 180 °C
Zone 2 180 - 190 °C
Zone 3 180 - 190 °C
Zone 4 190 - 200 °C
Die Temperature 190 - 200 °C
Melt Temperature 180 - 200 °C
Ejection Temperature 140 °C
Drying Temperature 80.0 - 100 °C
Dry Time 3.00 hour
Injection Pressure 60.0 - 120 MPa
Hold Pressure 60.0 - 120 MPa
Back Pressure <= 4.00 MPa
 
Descriptive Properties
Eff. thermal diffusivity4.85E-08[m^2/s]
Injection moldingYes
Injection speedslow-medium
PelletsYes
Processing conditions acc. ISO9988-2
Profile extrusionYes

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