CuCrZr Rod and Flat Bar

Chromium-zirconium copper (CuCr1Zr). Its high conductivity and its ability to retain hardness at elevated temperatures make it the standard material for resistance spot and seam welding electrodes. We hold good stocks.

Grade and sizes

CuCrZr · CW106C

CuCr1Zr

A precipitation-hardening copper alloy with about 0.5–1.2 % chromium and a small zirconium addition. In the heat-treated condition it retains an electrical conductivity of at least 75 % IACS (43 MS/m) and a thermal conductivity of about 320 W/mK, while its hardness is well above that of pure copper. It resists softening up to about 500 °C. Used for electrodes, contacts and mould cooling parts exposed to high current and heat at the same time.

INTERNATIONAL EQUIVALENTS

EN CW106C · DIN 2.1293 · UNS C18150
Rod EN 12163 · flat bar EN 12167 · application ISO 5182

SIZES: Sizes available on request; parts machined to drawing can also be supplied.
ORDERING: Cut to length, minimum 1 kg. Rods of Ø15 mm and below are normally supplied uncut, in full lengths (3 m).

For large-quantity orders, other cut sizes are possible.

Request a quote on WhatsApp Calculate weight ↓Request technical data

Chemical composition, mechanical properties and material certificates are available on request.

CuCrZr rod and flat bar weight calculator

Calculate the weight from the size, or the length and number of pieces needed for a target weight. Your selections are added to the quote message automatically.

FORM

Diameter (Ø)mmLengthmmQuantitypcs

CuCr1Zr: calculated with a density of 8.91 g/cm³.

TOTAL THEORETICAL WEIGHT

1.26 kg

1.26 kg per piece · quantity: 1 · 6.30 kg/m

Order terms: Cut to length, minimum 1 kg. Rods of Ø15 mm and below are normally supplied uncut, in full lengths (3 m); if you need a different length, you can mention it in your request. This is a theoretical weight; we invoice on the actual weight as weighed.

YOUR MESSAGE

Hello, I would like a quote for CuCrZr Rod and Flat Bar (rod).
Size: Ø30 × 200 mm, quantity: 1 (theoretical ~1.26 kg)

Request a quote for this size on WhatsApp or send by e-mail →

For other copper sizes, weight-per-metre tables and densities, see the Copper weight calculator →

Applications

Spot-welding electrodes and electrode caps
Seam-welding wheels
Electrode holders and shanks
Plastic injection mould components
Continuous casting moulds

Frequently asked questions

Which copper alloy is used for spot-welding electrodes?

In the trade, copper for spot-welding electrodes usually means CuCrZr (CuCr1Zr, CW106C). Because it does not soften at elevated temperatures, it lasts much longer than pure copper in spot-welding electrodes and caps.

Is “zirconium rod” the same material as CuCrZr?

In the Turkish trade, “zirkonyum çubuk” (zirconium rod), “zirkonyum bakır”, “zirkonyumlu bakır”, “puntalık bakır” and “punta bakırı” all refer to the same material: CuCrZr (CuCr1Zr, CW106C). The material is mostly copper, with about 0.5–1.2 % chromium and 0.03–0.3 % zirconium. Rods made of pure zirconium metal are a different product group and are not part of our range.

What are the designations for CuCr1Zr?

CuCr1Zr: CuCrZr, EN CW106C, DIN 2.1293, UNS C18150. Any of these designations can be used in your enquiry; we will match the correct material.

Why can the invoiced weight differ from the calculated weight?

The calculator gives the theoretical weight. The actual weight varies with dimensional tolerances and cutting allowance; we invoice on the actual weight as weighed.

What information should I send for a quote?

We only need the size (diameter × length), quantity and delivery location. If you fill in the calculator above, these details are added to the WhatsApp message automatically.