LG Chemical LUCEL GC225 POM+GF25%, High Rigidity

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LG Chemical LUCEL GC225 POM+GF25%, High Rigidity
Categories:	Polymer; Thermoplastic; Acetal (Polyoxymethylene, POM); Acetal Copolymer, 30% Glass Fiber Reinforced
Material Notes:	Feature: Injection Molding, POM+GF25%, High Rigidity Application: Casings of Pump and Pivot Bearings CAS No. 66455-31-0 and 65997-17-3 Information provided by LG Chemical
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Physical Properties	Original Value	Comments

Specific Gravity	1.59 g/cc	ASTM D792
Maximum Moisture Content	0.10	Injection Molding
Linear Mold Shrinkage, Flow	0.0040 - 0.0090 cm/cm @Thickness 3.20 mm	ASTM D955
Melt Flow	10 g/10 min @Load 2.16 kg, Temperature 190 °C	ASTM D1238

Mechanical Properties	Original Value	Comments
Hardness, Rockwell R	85	ASTM D785
Tensile Strength, Yield	1300 kg(f)/cm² @Thickness 3.20 mm	5mm/min; ASTM D638
Elongation at Break	3.0 % @Thickness 3.20 mm	5mm/min; ASTM D638
Flexural Yield Strength	2000 kg(f)/cm² @Thickness 3.20 mm	1.3mm/min; ASTM D790
Flexural Modulus	80000 kg(f)/cm² @Thickness 3.20 mm	1.3mm/min; ASTM D790
Izod Impact, Notched	9.00 kg-cm/cm @Thickness 6.40 mm, Temperature 23.0 °C	ASTM D256

Electrical Properties	Original Value	Comments
Volume Resistivity	1.00e+16 ohm-cm	ASTM D257
Surface Resistance	1.00e+14 ohm	ASTM D257

Thermal Properties	Original Value	Comments
Deflection Temperature at 0.46 MPa (66 psi)	165 °C @Thickness 6.40 mm	Unannealed; ASTM D648
Deflection Temperature at 1.8 MPa (264 psi)	160 °C @Thickness 6.40 mm	Unannealed; ASTM D648
UL RTI, Electrical	50.0 °C @Thickness >=0.750 mm
UL RTI, Mechanical with Impact	50.0 °C @Thickness >=0.750 mm
UL RTI, Mechanical without Impact	50.0 °C @Thickness >=0.750 mm
Flammability, UL94	HB @Thickness >=0.750 mm
	HB @Thickness >=1.50 mm
	HB @Thickness >=3.00 mm

Processing Properties	Original Value	Comments
Rear Barrel Temperature	180 - 200 °C	Injection Molding
Middle Barrel Temperature	190 - 210 °C	Injection Molding
Front Barrel Temperature	200 - 220 °C	Injection Molding
Nozzle Temperature	200 - 220 °C	Injection Molding
Melt Temperature	210 - 220 °C	Injection Molding
Mold Temperature	60.0 - 100 °C	Injection Molding
Drying Temperature	90.0 - 110 °C	Injection Molding
Dry Time	2.00 - 3.00 hour	Injection Molding
Back Pressure	0.000 - 4.02 MPa	Injection Molding
Screw Speed	40 - 75 rpm	Injection Molding

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