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Omnia Plastica Arnite Omnialite POM c Acetal Copolymer

Category Polymer , Thermoplastic , Acetal (POM) , Acetal Copolymer, Unreinforced
Manufacturer Omnia Plastica s.p.a.
Trade Name Arnite Omnialite
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Omnia Plastica Arnite Omnialite POM c Acetal Copolymer.pdf
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Material Notes:
Polyoxymethylene, commonly called Acetal, is a crystalline polymer obtained from the polymerisation of formaldehyde. Discovered fairly recently (1960), it has enjoyed rapid growth and large acceptance thanks to it’s excellent mechanical features, stability to humidity and ease of machining. All our stock shapes made of POM are marked along the whole length with product code and batch number, according to ISO 9002 standards.Features:High fatigue resistanceGood dimensional stabilityLow friction coefficientCompressive strength, shock resistance, even at low temperatureExcellent machinability especially used on automatic equipmentColour: natural and blackWeak Point:Compared to PA6 it has a lower abrasion resistance, particularly in dirty and dusty environments.Application:Mechanical: it is one of the most commonly used engineering plastics for mechanical applications such as bearings, cams, gears with low torque, gear wheels, conveyor rollers and precision machined components requiring dimensional stability and tight tolerances.Food contact: being physiologically inert it is suitable for food contact. It can be used in water at 80° C.Electrical: as it is not hygroscopic, it is commonly used for electric components such as insulators.Chemical: it is resistant to alkali and organic compounds. Thanks to its good chemical properties it is suitable for pump components, flanges and components for chemical plants.Information provided by Omnia Plastica s.p.a. for semifinished products such as sheet, rod, and tube.
Physical Properties Metric English Comments
Density 1.41 g/cc
0.0509 lb/in³
ISO.1183 DIN.53479
Moisture Absorption at Equilibrium 0.20 %
0.20 %
50% relative humidity
Water Absorption at Saturation 0.70 %
0.70 %
23°C
Mechanical Properties Metric English Comments
Hardness, Rockwell M 88
88
dry sample; ISO2039.2
Ball Indentation Hardness 140 MPa
20300 psi
ISO2039.1 DIN.53456
Tensile Strength at Break 66.0 MPa
9570 psi
ISO.527 DIN.53455
Elongation at Break 50 %
50 %
ISO.527 DIN.53455
Tensile Modulus 2.70 GPa
392 ksi
ISO.527 DIN.53455
Compressive Strength 14.0 MPa
2030 psi
1% strain over 1000 hours; ISO.899 DIN.53444
Charpy Impact Unnotched NB
NB
7.5 J; ISO.R179 DIN.53453
Charpy Impact, Notched 0.900 J/cm²
4.28 ft-lb/in²
ISO179/3C DIN.53453
Coefficient of Friction, Dynamic 0.30
0.30
on dry ground steel; load =0.05MPa; speed =0.6 m/s
Thermal Properties Metric English Comments
CTE, linear 110 µm/m-°C

@Temperature 23.0 - 60.0 °C
61.1 µin/in-°F

@Temperature 73.4 - 140 °F
Thermal Conductivity 0.300 W/m-K
2.08 BTU-in/hr-ft²-°F
DIN.52612
Melting Point 165 °C
329 °F
Maximum Service Temperature, Air 110 °C
230 °F
Maximum operating temperature continuously for 5000 hours based on a tensile stress of 50% at 23° C.
140 °C
284 °F
short period, no load
Deflection Temperature at 1.8 MPa (264 psi) 115 °C
239 °F
ISO.75 DIN.53461
Minimum Service Temperature, Air -50.0 °C
-58.0 °F
impact conditions and heavy loads not considered
Flammability, UL94 HB
HB
Oxygen Index 15 %
15 %
ISO.4589
Electrical Properties Metric English Comments
Volume Resistivity 1.00e+15 ohm-cm
1.00e+15 ohm-cm
ISO.93 DIN.53482
Dielectric Constant 3.8

@Frequency 1e+6 Hz
3.8

@Frequency 1e+6 Hz
ISO.250 DIN.53483
Dielectric Strength 50.0 kV/mm
1270 kV/in
ISO.243 DIN.53481
Dissipation Factor 0.010

@Frequency 1e+6 Hz
0.010

@Frequency 1e+6 Hz
ISO.250 DIN.53483
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