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Elmet Technologies

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Celanese Hostaform® WR140LG POM, UV Resistant
Categories: Polymer; Thermoplastic; Acetal (Polyoxymethylene, POM)

Material Notes: Hostaform« acetal copolymer grade WR140LG Black is a specialty weatherable grade of acetal copolymer formulated to provide good flow with a low gloss finish and a UV stability necessary for exterior automotive applications.

Information provided by Celanese

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Physical PropertiesOriginal ValueComments
Density 1.33 g/ccISO 1183
Linear Mold Shrinkage, Flow 0.016 cm/cmISO 294-4
Linear Mold Shrinkage, Transverse 0.015 cm/cmISO 294-4
Melt Flow 13 g/10 min
@Load 2.16 kg,
Temperature 190 °C
[cm3/10min]; ISO 1133
 
Mechanical PropertiesOriginal ValueComments
Tensile Strength, Yield 41.0 MPa50mm/min; ISO 527-2/1A
Elongation at Yield 10 %50mm/min; ISO 527-2/1A
Tensile Modulus 1800 MPa50mm/min; ISO 527-2/1A
Flexural Modulus 1850 MPaISO 178
Charpy Impact, Notched 3.60 kJ/m²ISO 179/1eA
 3.60 kJ/m²
@Temperature -30.0 °C
ISO 179/1eA
 
Thermal PropertiesOriginal ValueComments
CTE, linear, Parallel to Flow 130 µm/m-°CISO 11359-2
CTE, linear, Transverse to Flow 130 µm/m-°CISO 11359-2
Melting Point 165 °C10°C/min; ISO 11357-1,-2,-3
Deflection Temperature at 1.8 MPa (264 psi) 80.0 °CISO 75-1, -2
 
Processing PropertiesOriginal ValueComments
Processing Temperature 80.0 - 105 °Ccavity
 180 - 200 °Chot runner
Zone 1 170 - 175 °C
Zone 2 170 - 180 °C
Zone 3 175 - 185 °C
Zone 4 180 - 190 °C
Die Temperature 185 - 195 °C
Melt Temperature 180 - 195 °C
Drying Temperature 105 - 110 °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
Injection moldingYes
Injection speedslow
Processing conditions acc. ISO9988-2

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PHCQ433 / 178888

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