Feroform F21
The Feroform range of materials has been developed by Tenmat to offer the design engineer the chance of replacing metal-based materials with unique, non-asbestos, wearing and bearing composites capable of duplicating and, in some cases, exceeding the performance of asbestos composites. Feroform materials possess strength, durability dimensional stability and excellent wear characteristics besides exhibiting good resistance to attack by many chemicals.
The resins used have been selected for their good mechanical properties and high thermal and dimensional stability. Both organic and synthetic fibres employed for reinforcement of the resins have been selected from the many types available for their high modulus and stability in water and various chemicals.
The “F” Grade range is primarily used in dry applications whilst the “T” & “PR” Grades have been specifically designed with very low water and moisture absorption, making them ideal for use in submerged applications yet still suitable to use dry.
The addition of selected friction modifiers, such as PTFE, graphite and molybdenum disulphide, enhances the wear properties and life of the materials, enabling them to be operated at higher speeds and loads.
F21
Cured phenolic resin matrix carrying naturally occurring fibre and incorporating graphite evenly dispersed throughout the matrix for lower friction and improved wear properties. A general wearing and bearing grade, but not normally used for fully water-submerged applications. Feroform F21 has strength, durability, dimensional stability, low friction, and excellent wear characteristics. It is particularly useful in dirty and dusty environments.
Properties
| Property |
Unit of measure |
Value |
| Tensile Strength | Mpa | 50 |
| Elongation at Break | % | |
| Modulus of Elasticity | MPa | |
| Impact Strength | kj/m² | 6 |
| Compressive Strength | MPa | 180 |
| Shear Strength | MPa | 30 |
| Shore Hardness | D Scale | |
| Co-efficient of Friction | μ | 0.13 |
| Water Absorption @ 23 Deg C | % | 1.5 |
| Service Temperature Intermittent | ᵒC | 150 |
| Service Temperature Continuous | ᵒC | 130 |
| Melting point | ᵒC | |
| Thermal Conductivity | W/m.ᵒC | 0.2 |
| Dielectric Strength | kV/mm | |
| Volume Resistivity | Ω.cm | |
| Surface Resistivity | Ω | |
| Arc Resistance | Sec | |