   | CuAg6 EN: - UNS: - |    |
Manufacturing technology of this composites is based on properties of binary system Cu-Ag and variable solubility of silver in copper and copper in silver in the range of solid solutions. Suitable quantity and process sequence of high deformation plastic working and heat treatment type solubility-precipitate allows to obtain wires constituted from Cu and Ag fibers with nanometric cross dimensions and in consequence provide to optimum superposition of high mechanical strength, high electrical conductivity and sufficient ductility of Cu-Ag alloys.
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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] |
9,2 | No data | No data | 60-87 Comments: Base on the temper | 270 | No data |
Conductor materials in pulsed high-field magnets, sheet-conductor, power, signal, diagnostic cables, windings, supply cables, transformers, sheet metal, wires, microwires, materials for electeode used in resistance welding Literature:
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Chemical composition
|
Value | Literature | Comments | |
| Ag [ wt.% ] | 6 | No data | approximate value | |
| Cu [ wt.% ] | 94 | 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 |
| 230-1200 Comments: from cast to hard | No data | No data | 120-195 Comments: [HB] soft - hard 70-180 Comments: [HV] soft - hard | 120 | No data | No data |
Mechanical properties of CuAg6 alloy
|
Material |
Hardness condition |
Tensile strength, MPa |
0,2% Yield Strength, MPa |
Elongation A50, % |
Vickers Hardness HV |
Spring bending limit, MPa |
Spring fatigue limit, MPa |
|---|---|---|---|---|---|---|---|
|
CuAg6 |
R320 |
320-400 |
≤ 210 |
30 |
70-120 |
460 |
230 |
|
R400 |
400-510 |
³ 330 |
6 |
110-150 |
|||
|
R500 |
500-660 |
³ 460 |
3 |
145-175 |
|||
|
R650 |
³ 650 |
³ 610 |
1 |
³ 175 |
Literature:
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
Electrical conductivity (% IACS) on the Cu-Ag alloys as a function of the amount of imposed work (extrusion and wire drawing)
UTS as a function of draw ratio for the Cu-6, 8 and 12 wt% Ag wires made by different method
UTS as a function of conductivity for various Cu-based alloys
Ultimate tensile strength dependent on draw ratio of the tested CuAg alloys
Relationship between the strength and conductivity of the tested CuAg alloys with different Ag content
Relationship between the strength and conductivity of Cu6Ag containing different addition
Ultimate tensile strength dependent on draw strain in some CuAg alloys
Electrical conductivity dependent on draw strain in some CuAg alloys
|
Material |
Hardness condition |
Tensile strength, MPa |
0,2% Yield Strength, MPa |
Elongation A50, % |
Vickers Hardness HV |
Spring bending limit, MPa |
Spring fatigue limit, MPa |
|
CuAg6 |
R320 |
320-400 |
≤ 210 |
30 |
70-120 |
460 |
230 |
|
R400 |
400-510 |
³ 330 |
6 |
110-150 |
|||
|
R500 |
500-660 |
³ 460 |
3 |
145-175 |
|||
|
R650 |
³ 650 |
³ 610 |
1 |
³ 175 |
Influence of the annealing temperature on the hardness
Influence of the annealing temperature on the electrical conductivity
Influence of the annealing time on the electrical conductivity in 60% deformed samples of 260 °C
Influence of the annealing time on the hardness in 60% deformed samples at 260 °C
Variation in ultimate tensile strength of Cu-6 wt. % Ag alloys (IH-2 and IH-3) after annealing. IH – Intermediate Heat Treatment
Variation in electrical conductivity of Cu-6 wt. Ag alloy as a function of aging temperature. IH – Intermediate Heat Treatment
Vickers hardness and electrical resistivity of Cu-6 wt.% Ag dependent on aging time at 450°C
Type of corrosion | Suitability | Literature |
|---|---|---|
Atmospheric | No data | - |
Marine environment | No data | - |
Stress crack | No data | - |
Hydrogen embrittlement | No data | - |
Electrolytic | No data | - |
Other - oxidising acids | No data | - |
Fatigue life as a function of the stress amplitude of Cu–7 wt.% Ag, Cu–24 wt.% Ag and Cu–7 wt.% Ag–0.05 wt.% Zr, respectively, measured at room temperature and at a stress ratio of R = 0,1
