Celanese Hostaform® LM90 POM, Specialty

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Celanese Hostaform® LM90 POM, Specialty
Categories:	Polymer; Thermoplastic; Acetal (Polyoxymethylene, POM)
Material Notes:	Hostaform« LM90 is a nominal 9 melt flow rate acetal copolymer which is capable of being permanently marked by a laser. Parts molded from Hostaform« LM90 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
Water Absorption at Saturation	0.75 %	ISO 62
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 Yield	9.0 %	50mm/min; ISO 527-2/1A
Tensile Modulus	2750 MPa	50mm/min; ISO 527-2/1A
Flexural Modulus	2700 MPa	ISO 178
Charpy Impact, Notched	5.50 kJ/m²	ISO 179/1eA

Thermal Properties	Original Value	Comments
CTE, linear, Parallel to Flow	100 µm/m-°C	ISO 11359-2
CTE, linear, Transverse to Flow	110 µm/m-°C	ISO 11359-2
Melting Point	167 °C	10°C/min; ISO 11357-1,-2,-3
Deflection Temperature at 1.8 MPa (264 psi)	98.0 °C	ISO 75-1, -2

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
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
Processing conditions acc. ISO	9988-2

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PHCQ383 / 178838

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