CuCoNiBe Rod and Flat Bar
Cobalt-nickel beryllium copper (CuCo1Ni1Be). Combines high strength with good conductivity; used for welding electrodes and mould components in severe service.

Grade and sizes
CuCo1Ni1Be
A precipitation-hardening copper alloy with about 0.8–1.3 % cobalt, 0.8–1.3 % nickel and 0.4–0.7 % beryllium. In the hardened condition it combines a tensile strength of at least 680 MPa with an electrical conductivity of about 26–30 MS/m; compared with CuBe2 its strength is lower and its conductivity roughly twice as high. Its resistance to softening and wear makes it a preferred choice for welding operations with high electrode forces.
Rod EN 12163 · flat bar EN 12167
- SIZES
- Sizes available on request; parts machined to drawing can also be supplied.
- ORDERING
- Cut to length, minimum 1 kg
For large-quantity orders, other cut sizes are possible.
Chemical composition, mechanical properties and material certificates are available on request.
CuCoNiBe 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.
Size: Ø30 × 200 mm, quantity: 1 (theoretical ~1.24 kg)
For other copper sizes, weight-per-metre tables and densities, see the Copper weight calculator →
Applications
- Heavy-duty spot-welding electrodes
- Seam-welding wheels
- Mould parts and core inserts
- Electrode holders
Frequently asked questions
What are the designations for CuCo1Ni1Be?
CuCo1Ni1Be: CuCoNiBe, EN CW103C. 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.
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