Celanese Celcon® GB25 POM, 25% Glass Reinforced

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Celanese Celcon® GB25 POM, 25% Glass Reinforced
Categories:	Polymer; Thermoplastic; Acetal (Polyoxymethylene, POM); Acetal Copolymer, 30% Glass Fiber Reinforced
Material Notes:	Celcon« GB25 acetal copolymer is a 25% glass bead filled grade for low shrinkage and warp resistance in large, flat and thin walled parts. Information provided by Celanese
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Physical Properties	Original Value	Comments

Specific Gravity	1.62 g/cc	ASTM D792
Density	1.58 g/cc	ISO 1183
Moisture Absorption	0.200 %	23°C/50%RH; ISO 62
Water Absorption at Saturation	0.65 %	ISO 62
Linear Mold Shrinkage, Flow	0.015 cm/cm	ISO 294-4
	0.016 cm/cm	ASTM D955
Linear Mold Shrinkage, Transverse	0.013 cm/cm	ISO 294-4
	0.014 cm/cm	ASTM D955
Melt Flow	13 g/10 min @Load 2.16 kg, Temperature 190 °C	[cm3/10min]; ISO 1133

Mechanical Properties	Original Value	Comments
Tensile Strength, Yield	49.0 MPa	50mm/min; ISO 527-2/1A
	6700 psi	ASTM D638
	3800 psi @Temperature 82.2 °C	ASTM D638
	10650 psi @Temperature -40.0 °C	ASTM D638
Elongation at Yield	4.0 %	50mm/min; ISO 527-2/1A
Tensile Modulus	3700 MPa	50mm/min; ISO 527-2/1A
Flexural Modulus	3600 MPa	ISO 178
	470000 psi	ASTM D790
Izod Impact, Notched	0.700 ft-lb/in	ASTM D256
	0.700 ft-lb/in @Temperature -40.0 °C	ASTM D256
	0.800 ft-lb/in @Temperature 82.2 °C	ASTM D256
Izod Impact, Notched (ISO)	2.60 kJ/m²	ISO 180/1A
Charpy Impact, Notched	2.40 kJ/m²	ISO 179/1eA
	2.20 kJ/m² @Temperature -30.0 °C	ISO 179/1eA

Thermal Properties	Original Value	Comments
CTE, linear, Parallel to Flow	70.0 µm/m-°C	ISO 11359-2
CTE, linear, Transverse to Flow	80.0 µm/m-°C	ISO 11359-2
Melting Point	165 °C	10°C/min; ISO 11357-1,-2,-3
	331 °F	ASTM D3418
Deflection Temperature at 1.8 MPa (264 psi)	105 °C	ISO 75-1, -2
	245 °F	ASTM D648

Processing Properties	Original Value	Comments
Processing Temperature	90.0 - 120 °C	cavity
	190 - 210 °C	hot 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
Drying Temperature	80.0 - 100 °C
Dry Time	3.00 hour
Injection Pressure	90.0 - 140 MPa
Hold Pressure	90.0 - 140 MPa
Back Pressure	<= 2.00 MPa

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

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PHCQ099 / 178554

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