ESD 90 POM Copolymer Rod

Grade: ESD 90

Formula: POM-C

Form: Rod

Material: Polyoxymethylene Copolymer (POMc)

Commodity: Polymers

Diameter: 25mm

ESD 90 POM Copolymer Rods are included in our comprehensive range of polymer rods. With 11 variations available, this acetal copolymer product line offers a blend of stiffness, strength and dimensional stability. Their low moisture absorption and excellent electrical insulating properties make these rods well-suited for applications in the semiconductor, electronic and electrical industries. Additionally, their wear resistance and low friction coefficient enable their use in bearings, gears and other mechanical parts. Overall, our ESD 90 POM Copolymer Rods provide versatile, high-performance engineering plastic solutions.

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Technical Data Sheet Safety Data Sheet Tolerance Properties

each

Tolerances

Rod

Diameter		+20% / -10%

Material Properties for Polymers

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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ESD 90 POM Copolymer Rod

Tolerances

Material Properties for Polymers