Celanese Celcon® M270™ POM, Unfilled

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Celanese Celcon® M270™ POM, Unfilled
Categories:	Polymer; Thermoplastic; Acetal (Polyoxymethylene, POM)
Material Notes:	Celcon« acetal copolymer grade M270Ö is a lower molecular weight, high - flow grade designed for superior moldability in multi-cavity, intricate or hard to fill molds applications. Information provided by Celanese
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Physical Properties	Original Value	Comments

Specific Gravity	1.41 g/cc	ASTM D792
Density	1.41 g/cc	ISO 1183
Density of Compound	1.20 g/cc
Moisture Absorption	0.200 %	23°C/50%RH; ISO 62
Water Absorption at Saturation	0.75 %	ISO 62
Linear Mold Shrinkage, Flow	0.017 cm/cm	ISO 294-4
	0.022 cm/cm	ASTM D955
Linear Mold Shrinkage, Transverse	0.016 cm/cm	ISO 294-4
	0.018 cm/cm	ASTM D955
Melt Flow	23 g/10 min @Load 2.16 kg, Temperature 190 °C	[cm3/10min]; ISO 1133

Mechanical Properties	Original Value	Comments
Tensile Strength, Yield	67.0 MPa	50mm/min; ISO 527-2/1A
	8800 psi	ASTM D638
Elongation at Yield	8.0 %	50mm/min; ISO 527-2/1A
Tensile Modulus	2800 MPa	50mm/min; ISO 527-2/1A
Flexural Modulus	2750 MPa	ISO 178
	375000 psi	ASTM D790
Izod Impact, Notched	1.00 ft-lb/in	ASTM D256
Izod Impact, Notched (ISO)	5.40 kJ/m²	ISO 180/1A
Charpy Impact Unnotched	116 kJ/m²	ISO 179/1eU
	108 kJ/m² @Temperature -30.0 °C	ISO 179/1eU
Charpy Impact, Notched	5.20 kJ/m²	ISO 179/1eA
Tensile Creep Modulus, 1 hour	2300 MPa	ISO 899-1
Tensile Creep Modulus, 1000 hours	1300 MPa	ISO 899-1

Thermal Properties	Original Value	Comments
CTE, linear, Parallel to Flow	110 µm/m-°C	ISO 11359-2
CTE, linear, Transverse to Flow	120 µm/m-°C	ISO 11359-2
Specific Heat Capacity	2.21 J/g-°C
Thermal Conductivity	0.155 W/m-K
Melting Point	166 °C	10°C/min; ISO 11357-1,-2,-3
Deflection Temperature at 0.46 MPa (66 psi)	156 °C	ISO 75-1, -2
Deflection Temperature at 1.8 MPa (264 psi)	103 °C	ISO 75-1, -2
	230 °F	ASTM D648

Processing Properties	Original Value	Comments
Processing Temperature	80.0 - 120 °C	cavity
	180 - 200 °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
Ejection Temperature	140 °C
Drying Temperature	80.0 - 100 °C
Dry Time	3.00 hour
Injection Pressure	60.0 - 120 MPa
Hold Pressure	60.0 - 120 MPa
Back Pressure	<= 4.00 MPa

Descriptive Properties
Injection molding	Yes
Injection speed	slow-medium
Pellets	Yes
Processing conditions acc. ISO	9988-2
Profile extrusion	No

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