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Formula: PEEK
Form: Nut
Material: PEEK
CAS Number: 29658-26-2
Commodity: Polymers
The PEEK Nut is part of Goodfellow's range of bolts and fasteners made from PEEK (polyetheretherketone). With its excellent mechanical properties and chemical resistance, PEEK is suitable for a wide variety of applications. The PEEK Nut range includes 28 variations, with nuts in different sizes and thread configurations. Example applications of PEEK nuts include use in the aerospace, automotive, and semiconductor industries, where the material’s strength at high temperatures and resistance to chemicals are advantageous.
Tolerances
Nut
| Size | See Item |
|---|
Material Properties for Polymers
Chemical Resistance
| Element | Value |
|---|---|
| Acids - concentrated | Good-Poor |
| Acids - dilute | Good |
| Alcohols | Good |
| Alkalis | Good |
| Aromatic hydrocarbons | Good |
| Greases and Oils | Good |
| Halogenated Hydrocarbons | Good |
| Halogens | Good-Poor |
| Ketones | Good-Poor |
Mechanical Properties
| Element | Value |
|---|---|
| Coefficient of friction | 0.18 |
| Hardness - Rockwell | M99 |
| Poisson's ratio | 0.4 |
| Elongation at break( % ) | 50 |
| Tensile modulus( GPa ) | 3.7-4 |
| Izod impact strength( J m⁻¹ ) | 85 |
| Tensile strength( MPa ) | 70-100 |
Electrical Properties
| Element | Value |
|---|---|
| Dielectric constant @1kHz | 3.2-3.3@50Hz-10Khz |
| Dissipation factor @ 1MHz | 0.003 |
| Dielectric strength( kV mm⁻¹ ) | 190@50µm |
| Volume resistivity( Ohmcm ) | 10¹⁵-10¹⁶ |
Physical Properties
| Element | Value |
|---|---|
| Flammability | V-0 @ 1.5mm |
| Radiation resistance | Good |
| Resistance to Ultra-violet | Fair |
| Limiting oxygen index( % ) | 35 |
| Water absorption - equilibrium( % ) | 0.5 |
| Water absorption - over 24 hours( % ) | 0.1-0.3 |
| Density( gcm⁻³ ) | 1.26-1.32 |
Thermal Properties
| Element | Value |
|---|---|
| Heat-deflection temperature - 0.45MPa( C ) | 260 |
| Heat-deflection temperature - 1.8MPa( C ) | 160 |
| Upper working temperature( C ) | 250 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 1340 |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 0.25@23°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 47-108 |