Celanese Celcon® LW90 POM, Tribological

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Celanese Celcon® LW90 POM, Tribological
Categories:	Polymer; Thermoplastic; Acetal (Polyoxymethylene, POM)
Material Notes:	Celcon« LW90 is a nominal 9 melt flow rate based material specifically formulated for high speed, low wear applications against metals. LW90 conforms to applicable FDA regulations governing food contact. Information provided by Celanese
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Physical Properties	Metric	English	Comments

Specific Gravity	1.43 g/cc	1.43 g/cc	ASTM D792
Density	1.41 g/cc	0.0509 lb/in³	ISO 1183
Moisture Absorption	0.200 %	0.200 %	23°C/50%RH; ISO 62
Water Absorption at Saturation	0.65 %	0.65 %	ISO 62
Linear Mold Shrinkage, Flow	0.018 cm/cm	0.018 in/in	ISO 294-4
	0.022 cm/cm	0.022 in/in	ASTM D955
Linear Mold Shrinkage, Transverse	0.015 cm/cm	0.015 in/in	ISO 294-4
	0.018 cm/cm	0.018 in/in	ASTM D955
Melt Flow	9.0 g/10 min	9.0 g/10 min	ASTM D1238
	8.0 g/10 min @Load 2.16 kg, Temperature 190 °C	8.0 g/10 min @Load 4.76 lb, Temperature 374 °F	[cm3/10min]; ISO 1133

Mechanical Properties	Metric	English	Comments
Tensile Strength, Yield	58.6 MPa	8500 psi	ASTM D638
	64.0 MPa	9280 psi	50mm/min; ISO 527-2/1A
Elongation at Yield	9.0 %	9.0 %	50mm/min; ISO 527-2/1A
Tensile Modulus	2.50 GPa	363 ksi	50mm/min; ISO 527-2/1A
Flexural Modulus	2.55 GPa	370 ksi	ASTM D790
	2.60 GPa	377 ksi	ISO 178
Izod Impact, Notched	0.641 J/cm	1.20 ft-lb/in	ASTM D256
Izod Impact, Notched (ISO)	5.70 kJ/m²	2.71 ft-lb/in²	ISO 180/1A

Thermal Properties	Metric	English	Comments
CTE, linear, Parallel to Flow	110 µm/m-°C	61.1 µin/in-°F	ISO 11359-2
CTE, linear, Transverse to Flow	120 µm/m-°C	66.7 µin/in-°F	ISO 11359-2
Deflection Temperature at 1.8 MPa (264 psi)	97.2 °C	207 °F	ASTM D648
	98.0 °C	208 °F	ISO 75-1, -2

Processing Properties	Metric	English	Comments
Processing Temperature	80.0 - 120 °C	176 - 248 °F	cavity
	180 - 200 °C	356 - 392 °F	hot runner
Zone 1	170 - 180 °C	338 - 356 °F
Zone 2	180 - 190 °C	356 - 374 °F
Zone 3	180 - 190 °C	356 - 374 °F
Zone 4	190 - 200 °C	374 - 392 °F
Die Temperature	190 - 200 °C	374 - 392 °F
Melt Temperature	180 - 200 °C	356 - 392 °F
Drying Temperature	80.0 - 100 °C	176 - 212 °F
Dry Time	3.00 hour	3.00 hour
Injection Pressure	60.0 - 120 MPa	8700 - 17400 psi
Hold Pressure	60.0 - 120 MPa	8700 - 17400 psi
Back Pressure	<= 4.00 MPa	<= 580 psi

Descriptive Properties
Injection molding	Yes
Injection speed	slow-medium
Pellets	Yes
Processing conditions acc. ISO	9988-2

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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PHCQ110 / 178565

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