CuCo2Be Rod and Flat Bar
Cobalt beryllium copper (CuCo2Be). A precipitation-hardening alloy with high conductivity, for welding electrodes and mould components.

Grade and sizes
CuCo2Be
A precipitation-hardening copper alloy with about 2.0–2.8 % cobalt and 0.4–0.7 % beryllium. In the aged condition it reaches a tensile strength of about 700–850 MPa and a hardness of 190–250 HB while providing an electrical conductivity of around 45–60 % IACS. Its high thermal conductivity also makes it suitable for injection-mould parts that must remove heat quickly. Its strength is lower than that of CuBe2, but its conductivity is considerably higher.
Rod EN 12163 · flat bar EN 12167 · ASTM B441
- 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.
CuCo2Be 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
- Spot and projection welding electrodes
- Seam-welding wheels
- Plastic injection mould components
- Electrode holders
Frequently asked questions
What are the designations for CuCo2Be?
CuCo2Be: Cobalt beryllium copper, EN CW104C, DIN 2.1285, UNS ≈ C17500, BS C112. 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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