What is HGW 2082?
HGW 2082 (Hgw 2082 per DIN 7735 / PF CC 201 per EN 60893) is a fabric laminate made of cotton-fabric-reinforced phenolic resin. Fabric layers are impregnated with the thermosetting resin and pressed under heat and pressure into sheets, round bars or tubes; the cured material is dimensionally stable, hard and mechanically robust. The colour is typically brown.
Within the cotton-fabric-laminate family, HGW 2082 marks the mid-range, economical standard grade: solid mechanical strength and good electrical insulation, but without the finer fabric structure and higher strength of HGW 2083, also offered by Liedtke, which represents the higher-grade variant of this material family. For most general mechanical and low-voltage electrical applications, HGW 2082 is the most economical choice.
Typical applications include insulating and partition panels in low-voltage switchgear technology, gears, cams and sliding elements in mechanical engineering, as well as jig and fixture components, spacers and brackets.
Technical Data
| Property | Value | Test Standard |
|---|---|---|
| General Properties | ||
| Density | 1.36 g/cm³ (range 1.3-1.4) | DIN 53479 |
| Water absorption (5 mm thickness) | 110 mg (DIN 7735 max. 130 mg) | DIN 53495 |
| Colour | brown | – |
| Mechanical Properties | ||
| Flexural strength | 150 MPa (DIN 7735 minimum 130 MPa) | DIN 53452 |
| Impact strength | 40 kJ/m² (DIN 7735 minimum 30 kJ/m²) | DIN 53453 |
| Notched impact strength | 20 kJ/m² (DIN 7735 minimum 15 kJ/m²) | DIN 53453 |
| Tensile strength | 120 MPa (DIN 7735 minimum 80 MPa) | DIN 53455 |
| Compressive strength | 200 MPa (DIN 7735 minimum 170 MPa) | DIN 53454 |
| Bond strength (splitting force) | 4000 N (DIN 7735 minimum 2500 N) | DIN 53463 |
| Modulus of elasticity | 8000 MPa (DIN 7735 minimum 7000 MPa) | DIN 53452 |
| Thermal Properties | ||
| Limiting temperature | 110 °C | VDE 0304, T.21 |
| Thermal conductivity | 0.2 W/(m·K) | DIN 52612 |
| Coefficient of linear thermal expansion | 20 · 10⁻⁶/K (range 20-40) | VDE 0304 |
| Thermal class | E | VDE 0534 |
| Resistance to glow heat | 2b | DIN 53459 |
| Electrical Properties | ||
| Electric strength ∥ / ⊥ | 17 / 12 kV (DIN 7735 minimum 8 / 5 kV) | DIN 53481 |
| Dielectric constant | 5 | DIN 53483 |
| Comparative tracking index CTI | 160 (DIN 7735 minimum 100) | IEC 60112 |
HGW 2082 in detail
1What is HGW 2082?+
HGW 2082 is a fabric laminate made of cotton-fabric-reinforced phenolic resin per DIN 7735 / EN 60893 (PF CC 201). It is the economical mechanical and electrical standard grade among cotton-fabric laminates, combining good mechanical strength with solid electrical insulation properties.
2How does Liedtke machine HGW 2082?+
We saw, mill, drill and turn HGW 2082 with sharp, carbide-tipped tools into dimensionally accurate precision parts. We ensure adequate dust extraction during machining, as resin and fabric dust is generated.
3When should I choose HGW 2082?+
HGW 2082 pays off whenever an economical, mechanically robust insulating and structural material for the low-voltage range is required, for example:
- Insulating and partition panels in low-voltage switchgear technology
- Gears, cams and sliding elements in mechanical engineering
- Jig and fixture components
- Spacers, brackets and mechanical structural parts
- General electrotechnical insulating parts without high tracking-resistance requirements
4What determines the price of an HGW 2082 part?+
The component price is determined mainly by sheet thickness or bar diameter, dimensions, material utilisation (offcuts), machining effort and batch size. HGW 2082 is the most economical fabric laminate in the cotton range. We are happy to provide binding prices on request based on your drawing.
5When is HGW 2082 not the right choice?+
HGW 2082 is not declared for direct food contact. For medium-voltage applications with high tracking-resistance requirements (CTI above 200) or continuous use above approximately 110 °C, materials such as HGW 2372.1 or melamine-resin-bonded grades are better suited; the hygroscopic cotton fabric also reaches its limits in very humid environments.
6Advantages and disadvantages of HGW 2082+
An honest assessment, and how the disadvantages can be mitigated in practice:
- Advantage: Economical standard fabric laminate
- Advantage: Good mechanical strength
- Advantage: Good electrical insulation properties
- Advantage: Good machinability
- Advantage: Proven, widely used material
- Disadvantage: Not declared for direct food contact
- Disadvantage: Moderate tracking resistance (CTI 100-160), usually not sufficient for medium voltage
- Disadvantage: Cotton fabric absorbs moisture
- Disadvantage: Continuous use limited to approx. 110 °C
- Disadvantage: Brown colour limits decorative applications
- Practical tip: HGW 2082 is the right choice for economical, mechanically robust insulating and structural parts in the low-voltage range. If a finer surface finish or higher strength is required, HGW 2083 is the better choice; for requirements of high tracking resistance or medium voltage, a glass-fabric laminate such as HGW 2372.1 is recommended.
Typical properties
- Economical standard fabric laminate
- Good mechanical strength
- Good electrical insulation properties
- Thermoset, dimensionally stable
- Good machinability
- Colour brown
Typical industries
- Electrical and insulation engineering
- Mechanical and plant engineering
- Jig and fixture construction
- Drive technology
- Switchgear and equipment manufacturing
- General mechanical component manufacturing
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