Copper-nickel
The copper-nickel have contents of nickel from 5 to the 44% and is used, generally, by its excellent resistance to the corrosion, the one which increases with the nickel content. Among the alloys with highest nickel content is found in the MONEL, of exceptional resistance properties to the corrosion. In addition to the cupronickel binary, formed only to base of nickel and copper some contain a third or a fourth element. Those which contain zinc are known by German silver.
| Designation | Density | Tensile strenght (kg/mm²) R • F |
Yield strenght (kg/mm²) R • F |
Elongation (%) R • F |
Hardness Brinell R • F |
Electric conduct. (% IACS) |
| K-701 Cu Ni 30 |
8,9 | 36 • 60 | 14 • 49 | 20 • 10 | 75 • 180 | 5 |
| K-702 Cu Ni 10 Fe 1 Mn |
8,9 | 32 • 42 | 12 • 38 | 38 • 12 | 65 • 120 | 9 |
| K-703 Cu Ni 30 Mn 1 Fe |
8,95 | 36 • 50 | 15 • 43 | 42 • 16 | 85 • 140 | 5 |
| K-704 Cu Ni 12 Zn 23 Alpaca |
8,7 | 41 • 47-70 | 15-20 • 36-60 | 38-45 • 25-2 | 85-100 • 125-190 |
7 |
| K-705 Cu Ni 18 Zn 19 Pb 2 Alpaca |
8,75 | 43 • 48-70 | 17-23 • 36-67 | 32-42 • 23-2 | 90-100 • 125-200 |
6 |
| K-706 Ni Cu 30 Monel |
8,8 | 50 | - | 30 | 120-140 | 4 |
R= Cuved F= Wrought
Equivalences• Applications
K-701 • Cu Ni 30 • DIN 17664 • Chemical sets for decorative end
K-702 • Cu Ni 10 Fe • DIN 17664 • To drive sea water, in condensers of central ships
K-703 • Cu Ni 30 Fe • DIN 17664 • Pipes with speeds until 5 m/s of water very contaminated
K-704 • Ns 6512 • DIN 17663 • Telecomunicación, construction, art..
K-705 • Ns 6218 Pb • DIN 17663 • Pieces of schemed by take-off of shaving
K-706 • Ni Cu 30 Fe • DIN 17743 • Sets chemical, butterfly valves, tools exposed to corrosion
Supply: Smelting, bars, dollas, pipe and sheet.
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