Non-Ferrous & Specialty
Copper Nickel Alloys
- Grades
- 15
- Elements tabulated
- 11
Overview
Cupro-nickels and nickel silvers used for seawater piping, heat exchangers, condensers and decorative applications.
IMS handles copper nickel alloys as both prime material and as arisings recovered from industrial processing. Material is sorted and segregated by grade, so it returns to the melt as a known specification rather than a mixed stream.
Chemical composition
15 grades · percentage by weight
| Grade | Ni | Cr | Cu | Fe | Al | Ti | Mn | Si | C | Zn | Others |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Eureka | 40 | – | 60 | – | – | – | – | – | – | – | – |
| Constantan (Cupron) | 47 | – | 52 | – | – | – | 1 | – | – | – | – |
| Ferry Metal (Copel) | 45 | – | 55 | – | – | – | – | – | – | – | – |
| Cupro Nickel 70/30 | 30 | – | 68.75 | 0.5 | – | – | 0.75 | – | – | – | – |
| Cupro Nickel 80/20 | 20 | – | 78.85 | 0.75 | – | – | 0.4 | – | – | – | – |
| Cupro Nickel 90/10 | 10 | – | 89.25 | 0.75 | – | – | – | – | – | – | – |
| Kunifer 5 | 5 | – | 93.8 | 1.2 | – | – | – | – | – | – | – |
| Kunifer 10 | 10 | – | 88 | 2 | – | – | – | – | – | – | – |
| Kunifer 30 | 30 | – | 68 | 0.7 | – | – | 0.8 | – | – | – | – |
| 10% Nickel Silver | 10 | – | 62.5 | – | – | – | – | – | – | BAL | – |
| 12% Nickel Silver | 12 | – | 62.5 | – | – | – | – | – | – | BAL | – |
| 15% Nickel Silver | 15 | – | 62.5 | – | – | – | – | – | – | BAL | – |
| 18% Nickel Silver | 18 | – | 62.5 | – | – | – | – | – | – | BAL | – |
| DTD 268 | 45.5 | – | 28 | – | – | – | 2.0* | – | – | BAL | – |
| Cormin | 37 | – | 44 | – | – | – | – | – | – | – | 11.0 Sn |
Select grades to compare them side by side, or save them to a shortlist.
* indicates maximum. The figures shown are nominal compositions of the various alloys. Values are reproduced from IMS technical data and are provided for identification purposes; confirm the specification against your own requirement before ordering.
Scroll the table sideways to see all elements, or switch to cards above.
Related materials
Magnet Alloys
Alnico and related permanent magnet alloys built on aluminium, nickel, cobalt and iron for stable magnetic performance.
13 grades
Nickel Alloys
Corrosion- and heat-resistant nickel-base alloys, including the Hastelloy, Inconel, Incoloy and Nimonic families, used where chemical attack and elevated temperature occur together.
52 grades
Complex Nickel Alloys
Precipitation-hardened and cast nickel superalloys engineered for creep resistance in the hot section of gas turbines and aero engines.
48 grades
Discuss copper nickel alloys with IMS.
Tell us the grade, the form and the quantity. We will confirm what we can supply or recover, and the certification that comes with it.