Machining MKHP+

MKHP+ is a melamine-faced hard paper with additional glass fabric reinforcement per DIN 7735 / EN 60893-3-4. It combines the very high tracking resistance (CTI 600) and decorative melamine surface of standard MKHP with significantly higher mechanical strength.

We saw, mill, drill and turn MKHP+ with sharp, carbide-tipped tools into dimensionally accurate precision parts. The glass fabric reinforcement calls for somewhat higher tool wear than standard MKHP; we ensure adequate dust extraction during machining.

MKHP+ pays off whenever tracking resistance needs to be combined with higher mechanical load capacity, for example:

• Mechanically higher-load insulating and partition panels in medium-voltage switchgear
• Fuse insertion plates and covers under increased impact/shock loading
• Components requiring high compressive strength perpendicular to the panel plane
• Hospital furniture and medical equipment cladding with higher mechanical load
• Front panels and cladding parts in harsh industrial environments

The component price is determined mainly by sheet thickness, dimensions, material utilisation (offcuts), machining effort and batch size. MKHP+ is priced above standard MKHP due to the additional glass fabric layer. We are happy to provide binding prices on request based on your drawing.

MKHP+ is not declared for direct food contact, and it is not designed for continuous use above approximately 120 °C. If increased mechanical load capacity is not required, the more economical standard MKHP is sufficient; as a thermoset, MKHP+ also cannot be reshaped or welded.

An honest assessment, and how the disadvantages can be mitigated in practice:

• Advantage: Very high tracking resistance (CTI 600)
• Advantage: Significantly higher mechanical strength than standard MKHP
• Advantage: High compressive strength perpendicular to the panel plane
• Advantage: Bright, light-fast, weather-resistant surface
• Advantage: Good electrical insulating properties
• Disadvantage: Not declared for direct food contact
• Disadvantage: Higher water absorption than standard MKHP
• Disadvantage: Higher tool wear during machining (glass fabric)
• Disadvantage: Continuous use limited to approximately 120 °C
• Disadvantage: Higher price than standard MKHP
• Practical tip: MKHP+ is the right choice whenever tracking resistance needs to be combined with high mechanical load capacity, for example for shock-loaded insulating parts in switchgear construction. If the mechanical strength of standard MKHP is sufficient, it is the more economical choice.