• Copper electrodes for resistance welding

    Copper electrodes

    for resistance welding
  • Kupferelektroden für das Widerstandsschweißen


    für das Widerstandsschweißen

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Copper electrodes for resistance welding / butt welding

EN12163 (Round bars)
EN12167 (Flat bars, profiles)
EN12420 (Forge products)


- 2.0850 | CuNi2Be (CW110C / C17510) / VNB-850

- 2.1285 (CuCo2Be / CuCoNiBe / CW103C / C17500), e.g. in stock 22x22x13°, length 250mm

- 2.1293 (CuCrZr / CW106C / C18150)

Other materials on request.

Reference analysis [%], material C17510
Ni Be Co Fe Si Other Cu
1,4 bis 2,4 0,2 bis 0,6 ≤ 0,3 ≤ 0,2 ≤ 0,2 ≈ 0,5 Rest

Brinell hardness HBW 10/3000 ≈ 230 HB
Tensile strength Rm ≈ 740 MPa
Electrical conductivity ≈ 40 MS/m

Compared to CuCoBe (2.1285), VNB-850 has approximately 40% higher electrical conductivity at about the same strength. This is reflected in an improvement in the service life – especially with short welding cycles, like on KEH chain welding machines from Wafios – by a factor of 8 to 10 in practical tests.

In comparison to CuCrZr / CuCr1Zr (2.1293), VNB-850 has somewhat lower electrical conductivity (approx. 10%), but the strength at room temperature is significantly lower at > 170 HB. In practical tests carried out, the service life with VNB-850 is approximately 2 to 3 times higher.

The costs, e.g. for electrodes alone for a single chain welding machine (for material, production of the electrodes, machine downtime / loss of production) should not be underestimated. The annual costs are in the five-digit range.

Delivery forms

Rods | cut to desired length | cut to length with end machining | as per drawings

Application examples

- Resistance welding electrodes for wire grates and wire baskets.
- Electrodes for Wafios KEH, KSH and KSF and Vitari MS and SH chain welding machines.
- Electrodes for electrical discharge machining / sinker EDM.

Kupferelektroden Profile für das Widerstandsschweißen

New special material for copper electrodes with significantly higher temperature resistance

The strength of the copper alloys most commonly used in resistance welding drops steeply from approx. 500° C.
A new material offers temperature resistance of 900° C at a very good level of conductivity. The material is also easy to machine.
Please get in touch with us.

Kupferelektroden Profile für das Widerstandsschweißen
Kupferelektroden Profile für das Widerstandsschweißen

Further information

Assurances regarding the existence of specific properties or the intended use always require written agreement with Ventos Lüftungstechnik GmbH.

Alloys sometimes contain Beryllium. Therefore, the creation of dust, vapours and smoke should be avoided when working with the material, e.g. when dry grinding, polishing or welding. Vapours and dust must not be inhaled. Avoid contact with skin and eyes. Milling and turning is not generally considered dangerous.


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