CUPAL sheets, washers, stripscut to your custom size
Galvanic-corrosion-free Cu/Al transitions for electrical assemblies — German-sourced material, cut to spec, with EN 10204 mill certificate and a 1-business-day quote.
- German-sourced material
- Quote within 1 business day
- EU-wide shipping
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CUPAL.hu is the dedicated CUPAL line of HIDRA-MIX Kft.hidramix.eu →Our Products
Copper-aluminium bimetal — 5 product lines
How to order — 4 simple steps
Tell us what you need
Via chat, email or the form — specify size, thickness and quantity. Attach a drawing if you have one.
Receive a quote quickly
We respond on business days within a few hours with a tailored quote. Not days, not weeks.
We cut to your specifications
Precision-cut to your exact shape and size. Circles, strips, rectangles, bespoke contours — anything.
Delivered across the EU
Carefully packaged and shipped fast. Within Hungary and throughout the entire European Union.
Tell us what you need
Via chat, email or the form — specify size, thickness and quantity. Attach a drawing if you have one.
Receive a quote quickly
We respond on business days within a few hours with a tailored quote. Not days, not weeks.
We cut to your specifications
Precision-cut to your exact shape and size. Circles, strips, rectangles, bespoke contours — anything.
Delivered across the EU
Carefully packaged and shipped fast. Within Hungary and throughout the entire European Union.
What is CUPAL?
CUPAL is a cold-roll bonded copper-aluminium bimetal composite: 70% aluminium, 30% copper. It is not an alloy — the two metals are joined by diffusion welding, and each side retains its original properties. Used wherever aluminium and copper conductors meet and galvanic corrosion must be prevented.
Know what you need?
Get a quote in 2 minutes — we respond within a few hours on business days.
Applications
Where CUPAL solves the problem
Six industries where the copper-aluminium transition is the weak link: from switchgear and lightning protection to EV fast chargers.
Switchgear
Corrosion-free transitions from aluminium busbars to copper cable lugs
Cable Lugs
Copper-aluminium joints that remain stable — no loosening, no corrosion
Lightning Protection
Outdoor Cu-Al-steel transitions built to last decades
Renewable Energy
Solar, wind, BESS, EV chargers — Cu/Al transitions that last 15+ years without galvanic corrosion.
Electric Vehicles
Lightweight, corrosion-free transitions for EV fast chargers
Busbars
Transition plates for corrosion-free copper-aluminium busbar connections
— Material standards
DIN 17007, DIN 1787, ISO 9001
CUPAL material standards (Al 3.0255 / Cu 2.0065) + WMH Westdeutscher Metall-Handel GmbH ISO 9001:2015 certified supply chain.
View details— Shipping
Standard size in 48h, custom cut in 5–10 business days
From stock in Hungary, 2–5 business days EU-wide. We tell you exactly when it arrives.
View detailsKnowledge Base — CUPAL Technical Resources
5/13/2026
EN 10204 material certificate: 2.2 vs 3.1 on CUPAL shipments
What is the difference between EN 10204 type 2.2 and 3.1 material certificates, when do you need each, and how do you request one for a CUPAL order?
Read the full article →3/15/2026
CUPAL technical datasheet — full specification
Full technical datasheet of the CUPAL copper-aluminum bimetal composite material: physical, mechanical and chemical properties.
Read the full article →3/1/2026
Preventing galvanic corrosion between copper and aluminum
What galvanic corrosion is, why it threatens copper-aluminum joints, and how CUPAL bimetal solves it.
Read the full article →Questions? Or ready to order?
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