What is HGW 2572-F2?
Hgw 2572-F2 – silicone-resin glass-fabric laminate, heat-resistant up to 180 °C, tracking-resistant, US-market designation variant of Hgw 2572
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-F2 in detail
1What is HGW 2572-F2?+
HGW 2572-F2 is a glass-fabric-reinforced silicone-resin laminate per DIN 7735 / EN 60893 (SI GC 202) and technically identical to HGW 2572. "-F2" is simply a US-market designation variant, not an independent NEMA standard designation.
2How does Liedtke machine HGW 2572-F2?+
We saw, mill, drill and turn HGW 2572-F2 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-F2?+
HGW 2572-F2 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-F2 part?+
The component price is determined mainly by sheet thickness, dimensions, material utilisation (offcuts), machining effort and batch size. Like HGW 2572, HGW 2572-F2 is the premium material among the fabric laminates due to the more expensive silicone resin. We are happy to provide binding prices on request based on your drawing.
5When is HGW 2572-F2 not the right choice?+
HGW 2572-F2 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-F2+
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
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
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