Celanese Hostaform® C 9021 10/9005 POM, Unfilled

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Celanese Hostaform® C 9021 10/9005 POM, Unfilled
Categories:	Polymer; Thermoplastic; Acetal (Polyoxymethylene, POM)
Material Notes:	Hostaform« C 9021 10/9005 is a nominal 9 melt flow rate acetal copolymer which is capable of being permanently marked by a laser. Parts molded from Hostaform« C 9021 10/9005 can be laser marked with barcodes, identification numbers, designs, 2-D symbology, etc. Information provided by Celanese
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Physical Properties	Original Value	Comments

Density	1.41 g/cc	ISO 1183
Density of Compound	1.20 g/cc
Water Absorption at Saturation	0.65 %	ISO 62
Linear Mold Shrinkage, Flow	0.020 cm/cm	ISO 294-4
Linear Mold Shrinkage, Transverse	0.018 cm/cm	ISO 294-4
Melt Flow	8.0 g/10 min @Load 2.16 kg, Temperature 190 °C	[cm3/10min]; ISO 1133

Mechanical Properties	Original Value	Comments
Tensile Strength, Yield	64.0 MPa	50mm/min; ISO 527-2/1A
Elongation at Break	25 %
Elongation at Yield	9.0 %	50mm/min; ISO 527-2/1A
Tensile Modulus	2850 MPa	50mm/min; ISO 527-2/1A
Flexural Modulus	2700 MPa	ISO 178
Charpy Impact Unnotched	180 kJ/m²	partial break; ISO 179/1eU
	160 kJ/m² @Temperature -30.0 °C	ISO 179/1eU
Charpy Impact, Notched	5.50 kJ/m²	ISO 179/1eA
	5.00 kJ/m² @Temperature -30.0 °C	ISO 179/1eA
Tensile Creep Modulus, 1 hour	2500 MPa	ISO 899-1
Tensile Creep Modulus, 1000 hours	1300 MPa	ISO 899-1

Electrical Properties	Original Value	Comments
Volume Resistivity	1.00e+14 ohm-cm	IEC 60093
Surface Resistance	1.00e+14 ohm	IEC 60093
Dielectric Constant	4.0 @Frequency 1e+6 Hz	IEC 60250
	4.0 @Frequency 100 Hz	IEC 60250
Dielectric Strength	35.0 kV/mm	IEC 60243-1
Dissipation Factor	0.0020 @Frequency 100 Hz	IEC 60250
	0.0050 @Frequency 1e+6 Hz	IEC 60250
Comparative Tracking Index	600 V	IEC 60112

Thermal Properties	Original Value	Comments
CTE, linear, Parallel to Flow	110 µm/m-°C	ISO 11359-2
CTE, linear, Transverse to Flow	110 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 1.8 MPa (264 psi)	104 °C	ISO 75-1, -2
Flammability, UL94	HB @Thickness 1.50 mm
	HB @Thickness 3.00 mm

Processing Properties	Original Value	Comments
Processing Temperature	80.0 - 120 °C	cavity
	190 - 210 °C	hot runner
Feed Temperature	60.0 - 80.0 °C
Zone 1	170 - 180 °C
Zone 2	180 - 190 °C
Zone 3	190 - 200 °C
Zone 4	190 - 210 °C
Die Temperature	190 - 210 °C
Melt Temperature	190 - 210 °C
Ejection Temperature	140 °C
Drying Temperature	120 - 140 °C
Dry Time	3.00 - 4.00 hour
Moisture Content	<= 0.15 %
Injection Pressure	60.0 - 120 MPa
Hold Pressure	60.0 - 120 MPa
Back Pressure	<= 4.00 MPa
Screw Speed	70 rpm @Diameter 55.0 mm
	100 rpm @Diameter 40.0 mm
	150 rpm @Diameter 25.0 mm

Descriptive Properties
Eff. thermal diffusivity	4.85E-08	[m^2/s]
Injection molding	Yes
Injection speed	slow-medium
Processing conditions acc. ISO	9988
pvT (Generic Grade reference)	POM K, M-RN

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