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Formula: POM-C
Form: Ball/Sphere
Material: Polyoxymethylene Copolymer (POMc)
Commodity: Polymers
Goodfellow offers a range of POM Copolymer Balls in various quantities. POM, or polyoxymethylene, is a high-performance thermoplastic known for its excellent dimensional stability, low friction, and high rigidity. These precision polymer balls provide uniform, near-perfect sphericity. Their outstanding wear resistance makes them ideal for applications in food processing equipment, conveying systems, and precision ball bearings. With Goodfellow's selection of POM Copolymer Balls, engineers can find the right fit for projects demanding precision, low friction, and chemical resistance.
Tolerances
Ball/Sphere
| Diameter | Standard | ±5% |
|---|---|---|
| Diameter | Precision | See Item |
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 |
Other Customers Purchased
-
POM Copolymer Film Formula: Acetal - Copolymer POMC
Thickness: 1mm
Length 1: 1000mm
Length 2: 1000mm
UOM Code: 045-423-19
eachStarting at $143.13
Discounts applied for volume purchases -
POM Copolymer Rod Formula: Acetal - Copolymer POMC
Diameter: 25mm
Length: 500mm
Colour: Natural
UOM Code: 037-076-70
eachStarting at $154.40
Discounts applied for volume purchases -
POM Homopolymer Rod Formula: Acetal - Homopolymer POMH
Diameter: 100mm
Length: 200mm
Colour: White
CAS Number: 9002-81-7
UOM Code: 057-550-91
eachStarting at $145.35
Discounts applied for volume purchases -
ESD 90 POM Copolymer Rod Grade: ESD 90
Formula: Acetal - Copolymer POMC
Diameter: 25mm
Length: 50mm
Colour: Natural
UOM Code: 116-191-21
eachStarting at $159.38
Discounts applied for volume purchases -
POM Homopolymer Film Formula: Acetal - Homopolymer POMH
Thickness: 5mm
Length 1: 300mm
Length 2: 300mm
CAS Number: 9002-81-7
UOM Code: 029-323-65
eachStarting at $141.50
Discounts applied for volume purchases -
Alumina Balls
Formula: Al₂O₃
Quantity: 10 Pcs
Type: Non-Precision Sphere
Sphericity: Nominal
CAS Number: 1344-28-1
UOM Code: 439-337-21eachStarting at $117.65
Discounts applied for volume purchases
