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PP Balls
Goodfellow's PP Balls are precision engineered polypropylene spheres available in 10 variations. These high-purity polymer balls exhibit excellent chemical resistance and low moisture absorption. Goodfellow's PP Balls find uses in a wide array of applications including flow visualization studies, calibration of imaging systems, and developing mixing models for chemical reactors. The extensive selection of quantities and tight dimensional tolerances make them well-suited for research and testing needs across science and industry.
Formula: PP
Product Shape: Hollow
Diameter: 19.05mm
Quantity: 100 Pcs
Type: Precision Sphere
Colour: Natural
CAS Number: 9003-07-0
UOM Code: 001-075-03
Product Shape: Hollow
Diameter: 19.05mm
Quantity: 100 Pcs
Type: Precision Sphere
Colour: Natural
CAS Number: 9003-07-0
UOM Code: 001-075-03
SKU: 1000000144
Product Code: PP30-SP-000180
Tolerances
Ball/Sphere
| Diameter | Standard | ±5% |
|---|---|---|
| Diameter | Precision | See Item |
Tolerances
Ball/Sphere
| Diameter | Standard | ±5% |
|---|---|---|
| Diameter | Precision | See Item |
$170.13
each
- Buy 5 for $137.81 each and save 19%
- Buy 10 for $125.90 each and save 26%
No Minimum order
Free technical support
*Free delivery worldwide
Material Properties for Polymers
Chemical Resistance
| Element | Value |
|---|---|
| Acids - concentrated | Good-Fair |
| Acids - dilute | Good-Fair |
| Alcohols | Good |
| Alkalis | Good |
| Aromatic hydrocarbons | Fair |
| Greases and Oils | Good-Fair |
| Halogenated Hydrocarbons | Good-Poor |
| Halogens | Poor |
| Ketones | Good |
Mechanical Properties
| Element | Value |
|---|---|
| Coefficient of friction | 0.1-0.3 |
| Hardness - Rockwell | R80-100 |
| Elongation at break( % ) | 150-300, for biax film >50 |
| Tensile modulus( GPa ) | 0.9-1.5, for biax film 2.2-4.2 |
| Izod impact strength( J m⁻¹ ) | 20-100 |
| Abrasive resistance - ASTM D1044( mg/1000 cycles ) | 13-16 |
| Tensile strength( MPa ) | 25-40, for biax film 130-300, |
Electrical Properties
| Element | Value |
|---|---|
| Dielectric constant @1MHz | 2.2-2.6 |
| Dissipation factor @ 1MHz | 0.0003-0.0005 |
| Dielectric strength( kV mm⁻¹ ) | 30-40 |
| Surface resistivity( Ohm/sq ) | 10¹³ |
| Volume resistivity( Ohmcm ) | 10¹⁶-10¹⁸ |
Physical Properties
| Element | Value |
|---|---|
| Flammability | HB |
| Radiation resistance | Fair |
| Refractive index | 1.49 |
| Resistance to Ultra-violet | Poor |
| Limiting oxygen index( % ) | 18 |
| Water absorption - equilibrium( % ) | 0.03 |
| Density( gcm⁻³ ) | 0.9 |
Thermal Properties
| Element | Value |
|---|---|
| Heat-deflection temperature - 0.45MPa( C ) | 100-105 |
| Heat-deflection temperature - 1.8MPa( C ) | 60-65 |
| Lower working temperature( C ) | 50 |
| Upper working temperature( C ) | 90-120 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 1700-1900 |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 0.1-0.22@23°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 100-180 |
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Formula: Al₂O₃
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