What is HGW 2572?
Hgw 2572 – glass-fabric laminate with silicone resin, heat-resistant up to 180 °C, tracking-resistant
Technical Data
| Property | Value | Test Standard |
|---|---|---|
| General Properties | ||
| Density | 1.7 g/cm³ (range 1.6-1.7) | DIN 53479 |
| Water absorption (5 mm thickness) | 13 mg (DIN 7735 max. 50 mg) | DIN 53495 |
| Colour | white | – |
| Mechanical Properties | ||
| Flexural strength | 240 MPa (DIN 7735 minimum 125 MPa) | DIN 53452 |
| Impact strength | 95 kJ/m² (DIN 7735 minimum 40 kJ/m²) | DIN 53453 |
| Notched impact strength | 60 kJ/m² (DIN 7735 minimum 25 kJ/m²) | DIN 53453 |
| Tensile strength | 164 MPa (DIN 7735 minimum 90 MPa) | DIN 53455 |
| Compressive strength | 120 MPa (DIN 7735 minimum 50 MPa) | DIN 53454 |
| Modulus of elasticity | 19000 MPa (DIN 7735 minimum 13000 MPa) | DIN 53452 |
| Thermal Properties | ||
| Limiting temperature | 180 °C | VDE 0304, T.21 |
| Thermal conductivity | 0.3 W/(m·K) | DIN 52612 |
| Electrical Properties | ||
| Electric strength ∥ | 30 kV (DIN 7735 minimum 20 kV) | DIN 53481 |
| Dielectric constant | 5 | DIN 53483 |
| Comparative tracking index CTI | 600 (DIN 7735 minimum 440) | IEC 60112 |
HGW 2572 in detail
1What is HGW 2572?+
HGW 2572 is a glass-fabric-reinforced silicone-resin laminate per DIN 7735 / EN 60893 (SI GC 202). It is designed for very high continuous-use temperature resistance (up to 180 °C) and very high tracking resistance (CTI 600) - the highest values among the fabric-laminate grades in Liedtke's range.
2How does Liedtke machine HGW 2572?+
We saw, mill, drill and turn HGW 2572 with sharp, carbide-tipped or diamond-coated tools into dimensionally accurate precision parts. We ensure adequate dust extraction during machining, as glass fibre dust is generated.
3When should I choose HGW 2572?+
HGW 2572 is worthwhile whenever electrical insulation is needed at high continuous temperature – for example:
- Slot insulation in electric motors and generators with high operating temperature
- Insulating parts in transformer and coil construction
- Components in heating and thermal engineering
- High-temperature insulating parts in aerospace and rail technology
- Electrical engineering applications requiring both high tracking resistance and high temperature
4What determines the price of an HGW 2572 part?+
The component price is determined mainly by sheet thickness, dimensions, material utilisation (offcuts), machining effort and batch size. HGW 2572 is the premium material among the fabric laminates in Liedtke's range, as silicone resin is more expensive. We are happy to provide binding prices on request based on your drawing.
5When is HGW 2572 not the right choice?+
HGW 2572 is not declared for direct food contact. Without a particular temperature requirement, an epoxy or cotton-fabric laminate is more economical; for applications requiring very high mechanical strength, HGW 2372.1 is superior.
6Advantages and disadvantages of HGW 2572+
An honest assessment – and how the disadvantages can be mitigated in practice:
- Advantage: Very high continuous-use temperature resistance (180 °C)
- Advantage: Very high tracking resistance (CTI 600)
- Advantage: Low water absorption
- Advantage: Good electrical insulation properties even at high temperature
- Advantage: Light, white surface
- Disadvantage: Not declared for direct food contact
- Disadvantage: Highest price among the fabric-laminate grades
- Disadvantage: Lower mechanical strength than Hgw 2372.1
- Disadvantage: Higher tool wear during machining (glass fabric)
- Disadvantage: Uneconomical for applications without high temperature requirements
- Practical tip: HGW 2572 is the right choice when electrical insulating parts must permanently withstand high temperatures (up to 180 °C) – for example in electric motors or transformers. If a limiting temperature of 130 °C is sufficient, Hgw 2372.1 is the more economical choice.
Typical Properties
- Very high continuous-use temperature resistance (180 °C)
- Very high tracking resistance (CTI 600)
- Low water absorption
- Good electrical insulation properties
- Thermoset, dimensionally stable
- Colour white
Typical Industries
- Electric motor and generator construction
- Transformer and coil construction
- Heating and thermal engineering
- Aerospace and rail technology
- Electrical engineering and switchgear construction
Downloads for HGW 2572
Related Materials
Request a Quote for Your HGW 2572 Part
A drawing or sample is enough. We calculate a concrete price and give you an honest recommendation on whether HGW 2572 is the optimal choice for your application or whether an alternative would make more sense.
Send Inquiry