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GEHR Plastics POM-C Acetal

Category Polymer , Thermoplastic , Acetal (POM)
Manufacturer GEHR Plastics Inc
Trade Name
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF GEHR Plastics POM-C Acetal.pdf
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Material Notes:
Polyoxymethylene can be used in temperatures up to 100°C. The high surface strength is only surpassed by a few materials. POM shows good sliding properties and high resistance to wear and tear because of the high strength and smooth surface. There is a very low risk of stress cracks. POM-C exhibits a high thermal stability and a high resistance to chemicals.Properties:no microporosityhigh strengthhigh rigidityhigh thermal stabilitylow water absorptionhigh dimension stabilitygood electrical insulating propertiesvery good sliding propertieshigh resistance to stress cracksnot resistant to high concentrated acidsdifficult to glue and paintApplications include bearings, fittings, gear wheels, parts for pumps, screws, bobbins, parts for textile industry, and medium for coating lines.
Physical Properties Metric English Comments
Specific Gravity 1.39 g/cc
1.39 g/cc
ISO 1183
Water Absorption 0.20 %
0.20 %
ISO 62
Mechanical Properties Metric English Comments
Ball Indentation Hardness 125 MPa
18100 psi
ISO 2039
Tensile Strength, Yield 63.0 MPa
9140 psi
ISO 527
Elongation at Break 31 %
31 %
ISO 527
Elongation at Yield 10 %
10 %
ISO 527
Modulus of Elasticity 2.60 GPa
377 ksi
ISO 527
Charpy Impact Unnotched NB
NB
ISO 179
Charpy Impact, Notched 0.600 J/cm²
2.86 ft-lb/in²
ISO 179
Coefficient of Friction 0.35
0.35
DIN 53375
Thermal Properties Metric English Comments
CTE, linear 120 µm/m-°C

@Temperature 20.0 °C
66.7 µin/in-°F

@Temperature 68.0 °F
DIN 53752
Maximum Service Temperature, Air 100 °C
212 °F
Deflection Temperature at 0.46 MPa (66 psi) 155 °C
311 °F
ISO 75
Deflection Temperature at 1.8 MPa (264 psi) 95.0 °C
203 °F
ISO 75
Vicat Softening Point 150 °C
302 °F
VST/B/50; ISO 306
Flammability, UL94 HB
HB
Electrical Properties Metric English Comments
Volume Resistivity >= 1.00e+13 ohm-cm
>= 1.00e+13 ohm-cm
VDE 0303
Surface Resistivity per Square >= 1.00e+13 ohm
>= 1.00e+13 ohm
VDE 0303
Dielectric Constant 3.8

@Frequency 1.00e+6 Hz
3.8

@Frequency 1.00e+6 Hz
DIN 53483
Dielectric Strength 40.0 kV/mm
1020 kV/in
VDE 0303
Dielectric Loss Index 0.0050

@Frequency 1.00e+6 Hz
0.0050

@Frequency 1.00e+6 Hz
DIN 53483
Comparative Tracking Index 600 V
600 V
CTI; IEC 60112
Descriptive Properties Value Comments
Acid Resistance no
Aromatic Resistance yes
Bondability no
CKW Resistance limited
Color Natural
Hydrocarbonate Resistance yes
Hydroxide Resistance yes
Ketone Resistance yes
Physiological indifference according yes
Resistance Against Hot Water yes
UV Stabilization no
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