Celanese Celcon® GC25A POM, 25% Glass Reinforced

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Celanese Celcon® GC25A POM, 25% Glass Reinforced
Categories:	Polymer; Thermoplastic; Acetal (Polyoxymethylene, POM); Acetal Copolymer, 30% Glass Fiber Reinforced
Material Notes:	Celcon« acetal copolymer grade GC25A is a glass coupled formulation containing 25% reinforced fiber glass. This grade offers excellent strength, stiffness and heat distortion temperature with lower mold shrinkage, minimum thermal expansion, excellent dimensional stability and good moldability. Information provided by Celanese
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Physical Properties	Metric	English	Comments

Specific Gravity	1.58 g/cc	1.58 g/cc	ASTM D792
Density	1.58 g/cc	0.0571 lb/in³	ISO 1183
Moisture Absorption	0.200 %	0.200 %	23°C/50%RH; ISO 62
Water Absorption at Saturation	0.80 %	0.80 %	ISO 62
Linear Mold Shrinkage, Flow	0.0040 cm/cm	0.0040 in/in	ISO 294-4
	0.0040 cm/cm	0.0040 in/in	ASTM D955
Linear Mold Shrinkage, Transverse	0.012 cm/cm	0.012 in/in	ISO 294-4
	0.014 cm/cm	0.014 in/in	ASTM D955

Mechanical Properties	Metric	English	Comments
Tensile Strength at Break	106 MPa	15400 psi	5mm/min; ISO 527-2/1A
	110 MPa	16000 psi	ASTM D638
	68.9 MPa @Temperature 71.1 °C	10000 psi @Temperature 160 °F	ASTM D638
	159 MPa @Temperature -40.0 °C	23000 psi @Temperature -40.0 °F	ASTM D638
Elongation at Break	2.0 %	2.0 %	5mm/min; ISO 527-2/1A
Tensile Modulus	8.60 GPa	1250 ksi	50mm/min; ISO 527-2/1A
Flexural Strength	160 MPa	23200 psi	ISO 178
Flexural Modulus	7.58 GPa	1100 ksi	ASTM D790
	8.70 GPa	1260 ksi	ISO 178
	3.45 GPa @Temperature 104 °C	500 ksi @Temperature 220 °F	ASTM D790
	4.83 GPa @Temperature 71.1 °C	700 ksi @Temperature 160 °F	ASTM D790
Izod Impact, Notched	0.587 J/cm	1.10 ft-lb/in	ASTM D256
	0.374 J/cm @Temperature -40.0 °C	0.700 ft-lb/in @Temperature -40.0 °F	ASTM D256
	0.481 J/cm @Temperature 82.2 °C	0.900 ft-lb/in @Temperature 180 °F	ASTM D256
Izod Impact, Notched (ISO)	6.00 kJ/m²	2.86 ft-lb/in²	ISO 180/1A
Charpy Impact Unnotched	2.50 J/cm²	11.9 ft-lb/in²	ISO 179/1eU
	3.50 J/cm² @Temperature -30.0 °C	16.7 ft-lb/in² @Temperature -22.0 °F	ISO 179/1eU
Charpy Impact, Notched	0.640 J/cm²	3.05 ft-lb/in²	ISO 179/1eA

Electrical Properties	Metric	English	Comments
Volume Resistivity	1.36e+14 ohm-cm	1.36e+14 ohm-cm	ASTM D257

Thermal Properties	Metric	English	Comments
CTE, linear, Parallel to Flow	25.0 µm/m-°C	13.9 µin/in-°F	ISO 11359-2
CTE, linear, Transverse to Flow	120 µm/m-°C	66.7 µin/in-°F	ISO 11359-2
Melting Point	165 °C	329 °F	10°C/min; ISO 11357-1,-2,-3
	166 °C	331 °F	ASTM D3418
Deflection Temperature at 1.8 MPa (264 psi)	160 °C	320 °F	ISO 75-1, -2
	163 °C	325 °F	ASTM D648

Processing Properties	Metric	English	Comments
Processing Temperature	90.0 - 120 °C	194 - 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	90.0 - 140 MPa	13100 - 20300 psi
Hold Pressure	90.0 - 140 MPa	13100 - 20300 psi
Back Pressure	<= 2.00 MPa	<= 290 psi

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

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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