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ESD 90 POM Copolymer Rod

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Grade: ESD 90 Composition: POM-C Form: Rod Material: Polyoxymethylene (POM) Commodity: Polymers Diameter: 25mm
ESD 90 POM Copolymer Rod is a solid cylindrical form of high-grade polyoxymethylene copolymer engineered for electrostatic dissipation at a higher resistivity range than lower-rated ESD POM grades. It retains the high stiffness, wear resistance, and low friction typical of POM while providing controlled static discharge pathways to protect sensitive electronic components. The rod geometry offers excellent dimensional stability and machinability, making it ideal for fabricating precision structural parts in electronics manufacturing, semiconductor assembly, and automated handling systems. Typical applications include static-safe alignment pins, support shafts, and structural frames used in cleanroom environments. The copolymer formulation enhances chemical resistance and thermal endurance, ensuring reliable performance under mechanical load and varying environmental conditions. In research and industrial manufacturing, ESD 90 POM Copolymer Rod serves as a robust solution for applications requiring the combination of mechanical strength and high-level electrostatic protection.
Starting at $191.00 each
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Material Properties

Chemical Resistance
Element Value
Acids - concentrated Poor
Acids - dilute Good-Fair
Alcohols Good-Fair
Alkalis Good
Aromatic hydrocarbons Good
Greases and Oils Good
Halogenated Hydrocarbons Good-Poor
Halogens Poor
Ketones Good - Fair
Electrical Properties
Element Value
Dielectric constant @1MHz 3.7-4.4
Dissipation factor @ 1MHz 0.006-0.18
Dielectric strength( kV mm⁻¹ ) 20@2.3mm
Surface resistivity( Ohm/sq ) 10¹⁵
Volume resistivity( Ohmcm ) 10¹⁵
Physical Properties
Element Value
Flammability HB
Radiation resistance Poor
Resistance to Ultra-violet Poor
Limiting oxygen index( % ) 15
Water absorption - equilibrium( % ) 0.6-0.8
Water absorption - over 24 hours( % ) 0.2-0.25
Density( gcm⁻³ ) 1.41
Mechanical Properties
Element Value
Hardness - Rockwell M80
Poisson's ratio 0.35
Elongation at break( % ) 15-40
Tensile modulus( GPa ) 2.3-2.8
Izod impact strength( J m⁻¹ ) 70-80
Tensile strength( MPa ) 60-70
Thermal Properties
Element Value
Heat-deflection temperature - 0.45MPa( C ) 160
Heat-deflection temperature - 1.8MPa( C ) 110
Lower working temperature( C ) -40
Upper working temperature( C ) 80-120
Specific heat( J K⁻¹ kg⁻¹ ) 1500
Thermal conductivity( W m⁻¹ K⁻¹ ) 0.23-0.3@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 80-120
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Available Configurations

Properties common to all products in this list

Grade: ESD 90 Composition: POM-C Form: Rod Material: Polyoxymethylene (POM) Commodity: Polymers Diameter: 25mm

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Tolerances

Rod
Diameter +20% / -10%