Celanese Celcon® MC270-HM POM, Mineral Reinforced

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Celanese Celcon® MC270-HM POM, Mineral Reinforced
Categories:	Polymer; Thermoplastic; Acetal (Polyoxymethylene, POM); Acetal Copolymer, Mineral Filled
Material Notes:	Celcon« MC270-HM is a high modulus, mineral coupled acetal copolymer. It utilizes a higher additive level to provide significant improvement in product stiffness and mold shrinkage and better warpage resistance than unfilled Celcon« M270. Celcon« MC270-HM is formulated to produce very flat, dimensionally stable parts. Information provided by Celanese
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Physical Properties	Metric	English	Comments

Specific Gravity	1.60 g/cc	1.60 g/cc	ASTM D792
Density	1.57 g/cc	0.0567 lb/in³	ISO 1183
Moisture Absorption	0.200 %	0.200 %	23°C/50%RH; ISO 62
Water Absorption at Saturation	0.75 %	0.75 %	ISO 62
Linear Mold Shrinkage, Flow	0.015 cm/cm	0.015 in/in	ISO 294-4
	0.015 cm/cm	0.015 in/in	ASTM D955
Linear Mold Shrinkage, Transverse	0.012 cm/cm	0.012 in/in	ASTM D955
	0.013 cm/cm	0.013 in/in	ISO 294-4

Mechanical Properties	Metric	English	Comments
Tensile Strength, Yield	44.1 MPa	6400 psi	ASTM D638
	45.0 MPa	6530 psi	50mm/min; ISO 527-2/1A
Elongation at Yield	5.0 %	5.0 %	50mm/min; ISO 527-2/1A
Tensile Modulus	3.75 GPa	544 ksi	50mm/min; ISO 527-2/1A
Flexural Strength	77.0 MPa	11200 psi	ISO 178
Flexural Modulus	3.45 GPa	500 ksi	ASTM D790
	3.70 GPa	537 ksi	ISO 178
Izod Impact, Notched	0.481 J/cm	0.900 ft-lb/in	ASTM D256
	0.320 J/cm @Temperature -40.0 °C	0.600 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)	5.30 kJ/m²	2.52 ft-lb/in²	ISO 180/1A
Charpy Impact, Notched	0.480 J/cm²	2.28 ft-lb/in²	ISO 179/1eA
	0.350 J/cm² @Temperature -30.0 °C	1.67 ft-lb/in² @Temperature -22.0 °F	ISO 179/1eA

Thermal Properties	Metric	English	Comments
CTE, linear, Parallel to Flow	60.0 µm/m-°C	33.3 µin/in-°F	ISO 11359-2
CTE, linear, Transverse to Flow	90.0 µm/m-°C	50.0 µin/in-°F	ISO 11359-2
Melting Point	165 °C	329 °F	10°C/min; ISO 11357-1,-2,-3
	165 °C	329 °F	ASTM D3418
Deflection Temperature at 1.8 MPa (264 psi)	97.2 °C	207 °F	ASTM D648
	105 °C	221 °F	ISO 75-1, -2

Processing Properties	Metric	English	Comments
Processing Temperature	80.0 - 120 °C	176 - 248 °F	cavity
	190 - 200 °C	374 - 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
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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