   | CuAg12 EN: - UNS: - |    |
It is necessary to create a unique combination of material properties for the construction of the magnets produced super high magnetic fields. The conductor materials for the production of magnetic windings must have high mechanical strength and good electrical conductivity in order to minimize Joule heating and endure Lorentz force caused by large electrical currents in the windings during operation. The characteristics of high strength and conductivity are also required for the materials used in the manufacture of lead wire frames in large-scale integrated circuits and power transmission system to high-speed electric locomotives. Cu-Ag alloys have further been expected in the application of high-field magnet design due to their better electrical and mechanical properties than other conductor alloys. In the micro composite wires, both combination of the work hardening and filamentary reinforcing produces significant strengthening benefit. Optimal processes of intermediate heat treatments introduced in cold formation further improve the strength and conductivity. 
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Basic properties
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| Density [g/cm3] | Specific heat capacity [J/(kg*K)] | Temperature coefficient of electrical resistance (0...100°C) [10-3/K] | Electrical conductivity [T=20°C, (% IACS)] | Thermal conductivity [W/(m*K)] | Thermal expansion coefficient 20...300°C [10-6/K] |
| 9,1 Comments: Copper based alloy, CuAg10 | No data | 0,00255 Comments: Copper based alloy, CuAg10 | 70-80 Comments: Soft - Hard, Copper based alloy, CuAg10 | No data | No data |
Conductor materials in pulsed high-field magnets, sheet-conductor, power, signal, diagnostic cables, windings, supply cables, transformers, sheet metal, wires, microwires. Literature:
Materials used in the manufacture of lead wire frames in large-scale integrated circuits and power transmission system to high-speed electric locomotives
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Chemical composition
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Value | Literature | Comments | |
| Ag [ wt.% ] | 12 | No data | approximate value | |
| Cu [ wt.% ] | 88 | No data | approximate value | |
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Mechanical properties
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| UTS [MPa] | YS [MPa] | Elongation [%] | Hardness | Young’s modulus [GPa] | Kirchhoff’s modulus [GPa] | Poisson ratio |
| 300-750 Comments: Soft - Hard, Copper based alloy, CuAg10 | No data | 1-30 Comments: Soft - Hard, Copper based alloy, CuAg10 | No data | No data | No data | No data |
Tensile strength of Cu-12 mass% Ag alloy sheets with and without intermediate heat treatment as a function of reduction ratio.
(a) without intermediate heat treatment, (b) with intermediate heat treatments at 450°C for at a reduction of 10% then at 450°C for 1 h at 30% and finally at 400°C for 1 h at 60%
Anisotropy in strength with respect to rolling direction for the Cu-12 mass% Ag alloy sheet. The orientation gives the longitudinal direction of the tensile test specimen with respect to the rolling direction.
UTS as a function of reduction ratio for the Cu-Ag alloy sheets, with varying Ag content, along with those for Cu-Cr and Cu-alumina alloys
Comparison of UTS as a function of draw ratio for the Cu-Ag wires and the Cu-Ag-Nb wire
UTS as a function of conductivity for various Cu-based alloys
Ultimate tensile strength dependent on draw ratio of the tested alloys
Relationship between the strength and conductivity of the tested alloys with different Ag content
Ultimate tensile strength dependent on draw strain in some alloys
Electrical conductivity dependent on draw strain in some alloys
Type of corrosion | Suitability | Literature |
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Atmospheric | No data | - |
Marine environment | No data | - |
Stress crack | No data | - |
Hydrogen embrittlement | No data | - |
Electrolytic | No data | - |
Other - oxidising acids | No data | - |
