What is PF CP 203 (Hp 2061.6)?
PF CP 203 (Hp 2061.6) is made of phenolic resin reinforced with cellulose paper. Paper webs are impregnated with the resin and pressed into sheets, rods, or tubes under heat and pressure. The cured thermoset no longer melts but remains dimensionally stable, hard, and mechanically strong; the color is typically brown.
PF CP 203 is the designation per EN 60893, Hp 2061.6 the designation per the older DIN 7735 – both denote technically the same material. Since both standard designations are common in the market, Liedtke Kunststofftechnik lists this material under both names as a standalone page. PF CP 203 (Hp 2061.6) is the hot-punchable grade (NEMA XXP) within the PF-CP series (PF CP 201–206) and has by far the lowest water absorption of the family (60 mg at 4 mm, versus 120–300 mg for other grades) – ideal for insulating parts that need to be reliably punched while remaining especially moisture-resistant. By comparison: PF CP 201 (Hp 2061) is the economical standard grade, PF CP 202 (Hp 2061.5) the electrically improved grade with the highest test voltage (40 kV), PF CP 204 (Hp 2063) the flame-retardant grade (UL 94 V-0, “FR-2”), and PF CP 205 / PF CP 206 (Hp 2062.9 / Hp 2062.8) the economical punching grades without high mechanical requirements.
PF CP 203 (Hp 2061.6) machines well by hot punching as well as sawing, milling, and drilling with sharp, carbide-tipped tools. The low moisture absorption ensures high dimensional accuracy. Typical applications are hot-punched electrical insulating parts, carrier plates and insulating pieces in switchgear construction, spacer and insulating washers, punched parts for electrical engineering, and insulating parts in moisture-sensitive assemblies.
Technical Data
| Property | Value | Test Standard |
|---|---|---|
| General Properties | ||
| Density | 1.4 g/cm³ | DIN 53479 |
| Water absorption (4 mm thickness) | 60 mg | DIN 53495 |
| Colour | brown | – |
| Mechanical Properties | ||
| Flexural strength (23°C) | 130 MPa | DIN 53452 |
| Tensile strength | 70 MPa | DIN 53455 |
| Impact strength | 7 kJ/m² | DIN 53453 |
| Notched impact strength (Charpy) | 2.5 kJ/m² | DIN 53453 |
| Compressive strength ⊥ to lamination | 250 MPa | DIN EN 60893 |
| Thermal Properties | ||
| Thermal conductivity | 0.2 W/(m·K) | DIN 52612 |
| Coefficient of linear expansion | 20-40 ×10⁻⁶/K | VDE 0304/2 |
| Limiting temperature | 120 °C | VDE 0304/2 |
| Thermal class | E | IEC 85 |
| Resistance to glowing | grade 2b | DIN 53459 |
| Electrical Properties | ||
| Insulation resistance between plugs (24h/23°C) | 5×10⁷ Ω | DIN 53482 |
| Test voltage ∥ to lamination | 25 kV | DIN 53481 |
| Test voltage ⊥ to lamination | 30 kV | DIN 53481 |
| Dielectric dissipation factor (1MHz, 24h water storage) | max. 0.05 | DIN 53483 |
| Permittivity | 5 | DIN 53483 |
| Comparative tracking index (CTI) | 100 | IEC 112 |
PF CP 203 (Hp 2061.6) in detail
1What is PF CP 203 (Hp 2061.6)?+
PF CP 203 is the EN 60893 designation for the phenolic paper laminate known under the older DIN 7735 standard as Hp 2061.6 – technically the same material. It is the hot-punchable special grade (NEMA XXP) within the PF-CP series and has by far the lowest water absorption of the entire family.
2How does Liedtke machine PF CP 203 (Hp 2061.6)?+
PF CP 203 (Hp 2061.6) machines well by hot punching as well as sawing, milling, drilling and turning with sharp, carbide-tipped tools. Thanks to its low moisture absorption, parts remain especially dimensionally accurate. We ensure adequate dust extraction during machining.
3When should I choose PF CP 203 (Hp 2061.6)?+
Especially suitable for hot-punched, moisture-resistant insulation parts – for example:
- Hot-punched electrical insulation parts with tight tolerances and clean edges
- Insulation parts in moisture-sensitive applications requiring stable electrical values
- Switchgear manufacturing with high demands on the dimensional accuracy of punched parts
- Components with complex contours not cleanly producible by cold punching
4What determines the price of a PF CP 203 part?+
The price of a PF CP 203 part is determined mainly by sheet thickness, dimensions, material utilisation, machining effort and batch size. Since PF CP 203 is specifically designed for hot punching, series parts can often be produced particularly economically – we provide a binding quote based on your drawing or sample.
5When is PF CP 203 (Hp 2061.6) not the right choice?+
PF CP 203 (Hp 2061.6) is not declared suitable for direct food contact. If a flame-retardant grade is required, PF CP 204 (Hp 2063, UL 94 V-0) is the right choice. For high mechanical strength requirements, PF CP 201 (Hp 2061) is better suited, and for higher dielectric strength, PF CP 202 (Hp 2061.5).
6Advantages and disadvantages of PF CP 203 (Hp 2061.6)+
An honest trade-off, and how the disadvantages can be mitigated in practice:
- Advantage: Optimized for hot punching (NEMA XXP) – clean edges, high dimensional accuracy
- Advantage: By far the lowest water absorption in the PF-CP series
- Advantage: Good electrical insulation properties
- Advantage: Good machinability
- Disadvantage: Not declared for direct food contact
- Disadvantage: Not flame-retardant (no UL 94 V-0 – choose PF CP 204/Hp 2063 for that)
- Disadvantage: Lower test voltage than PF CP 202 (Hp 2061.5)
- Disadvantage: Limiting temperature capped at 120 °C
- Practical tip: Where insulation parts are hot-punched in series and moisture resistance is a priority, PF CP 203 (Hp 2061.6) is the right choice. If flame retardance to UL 94 V-0 is also required, we switch to PF CP 204 (Hp 2063).
Typical Properties
- Hot-punching grade (NEMA XXP)
- By far the lowest water absorption in the PF-CP series
- Good electrical insulation properties
- High mechanical strength
- Good machinability
- Dimensionally stable (thermoset)
Typical Industries
- Electrical and electronics industry
- Switchgear manufacturing
- Mechanical engineering
- Punched-parts manufacturing
- Power engineering
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