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Rulon Bearings

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GEHR Plastics POM-C 25GF®
Categories: Polymer; Thermoplastic; Acetal (Polyoxymethylene, POM); Acetal Copolymer, 30% Glass Fiber Reinforced

Material Notes: The chemically coupled GEHR-C POM 25GFTM has a broad property profile that offers increased strength for many applications compared to non-reinforced GEHR POM™. In addition, the reinforcement reduces the coefficient of expansion and simultaneously increases the heat deflection temperature.

Features: Pressure tested quality; High strength and stiffness; High rigidity (to -40 °C); High thermal stability; Low water absorption; High dimension stability; Good electrical insulating properties; Very good sliding properties; High resistance to solvents; Very high resistance to stress cracks

Applications: Components in machinery engineering

Information provided by GEHR Plastics, Inc.

Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesOriginal ValueComments
Specific Gravity 1.58 g/ccISO 1183
Water Absorption 0.900 %ISO 62
Moisture Absorption 0.150 %ISO 62
 
Mechanical PropertiesOriginal ValueComments
Hardness, Rockwell H 190ISO 2039
Tensile Strength at Break 130 MPaISO 527
Elongation at Break 3.00 %ISO 527
Modulus of Elasticity 8.80 GPaISO 527
Charpy Impact Unnotched 55.0 kJ/m²ISO 179
Charpy Impact, Notched 8.00 kJ/m²ISO 179
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity >= 1.00e+12 ohm-cmIEC 60093
Surface Resistance >= 1.00e+13 ohmIEC 60093
Dielectric Constant 4.00
@Frequency 1.00e+6 Hz
IEC 60250
Dielectric Strength 43.0 kV/mmIEC 60243-1
Dielectric Loss Index 0.00700
@Frequency 1.00e+6 Hz
IEC 60250
Comparative Tracking Index 600 VIEC 60112
 
Thermal PropertiesOriginal ValueComments
Melting Point 168 °CISO 3146
Maximum Service Temperature, Air 110 °CUL746B
Deflection Temperature at 1.8 MPa (264 psi) 163 °CISO 75
Vicat Softening Point 160 °CVST/B/50; ISO 306
Minimum Service Temperature, Air -40.0 °CUL746B
Flammability, UL94 HB

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PGEHR104 / 327197

Aluminum Castings

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