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POM Homopolymer Balls
Available Configurations
Properties common to all products in this list
Starting at
$225.00
each
No Minimum order
Free technical support
*Free delivery worldwide
Material Properties
Chemical Resistance
| Element | Value |
|---|---|
| Acids - concentrated | Poor |
| Acids - dilute | Poor - Fair |
| Alcohols | Good-Fair |
| Alkalis | Poor |
| Aromatic hydrocarbons | Good |
| Greases and Oils | Good |
| Halogenated Hydrocarbons | Good-Poor(?) |
| Halogens | Poor |
| Ketones | Good - Fair |
Mechanical Properties
| Element | Value |
|---|---|
| Coefficient of friction | 0.2-0.35 |
| Hardness - Rockwell | M94 |
| Poisson's ratio | 0.35 |
| Elongation at break( % ) | 40-75 |
| Tensile modulus( GPa ) | 2.9-3.1 |
| Izod impact strength( J m⁻¹ ) | 75-130 |
| Tensile strength( MPa ) | 70 |
Electrical Properties
| Element | Value |
|---|---|
| Dielectric constant @1MHz | 3.7 |
| Dissipation factor @ 1MHz | 0.005 |
| Dielectric strength( kV mm⁻¹ ) | 20 |
| 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( % ) | 0.6-0.9 |
| Water absorption - over 24 hours( % ) | 0.25 |
| Density( gcm⁻³ ) | 1.42 |
Thermal Properties
| Element | Value |
|---|---|
| Heat-deflection temperature - 0.45MPa( C ) | 170 |
| Heat-deflection temperature - 1.8MPa( C ) | 135 |
| Upper working temperature( C ) | 80-120 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 1500 |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 0.22-0.24@23°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 122 |
Tolerances
Ball/Sphere
| Diameter | Standard | ±5% |
|---|---|---|
| Diameter | Precision | See Item |