Silver-Bearing Tough Pitch Copper is another name for Copper C11500 bars and rods, which are high-conductivity copper alloys with minor additions of silver to enhance resistance to thermal conductivity and softening temperature. These bars possess excellent electric conductivity with enhanced mechanical properties at high temperatures and are therefore well-suited for high-performance electrical products. Produced with accurate control, C11500 possesses a good surface finish, ductility, and resistance to corrosion. Its silver content helps it maintain strength under thermal cycling, which is paramount for most electrical and industrial uses. C11500 is also readily soldered, brazed, and welded for dependable service in electrical devices.
Copper C11500 has about 99.9% copper and 0.02–0.05% silver. Its electric conductivity is about 100% IACS, while thermal conductivity is over 380 W/m·K. The alloy is 220–370 MPa tensile strength, well-elongated, and thermally stable. Silver improves softening temperature such that C11500 retains mechanical properties under repeated thermal cycles. It possesses very good corrosion resistance, particularly in atmospheric and mildly aggressive media. It has good cold and moderate hot workability and very good stress relaxation resistance in connectors and contact components.
| Specification | ASTM B187, ASTM B301 / ASME SB187, SB301 |
| Size Range | 3.17 MM TO 350 MM DIA |
| Length | Random, Fix & Cut Length |
| Form | Round, Square, Hex (A/F), Rectangle, Wire (Coil Form), Wire-mesh, Billet, Ingot, Forging Etc. |
| Elements | ||
|---|---|---|
| Cu(1,2,3) | Ag(4) | |
| (1) Oxygen and trace elements may vary depending on the process. (2) This is a high conductivity copper which has, in the annealed condition a minimum conductivity of 100% IACS. (3) Cu value includes Ag. (4) Ag 0.054% min is the equivelant of, Ag 16 Troy Oz min. | ||
| Min (%) | 99.90 | 0.054 |
| Max (%) | – | – |
| Form | Temper | Temper Code | Tensile Strength (ksi) | YS-0.5% Ext (ksi) | Elongation (%) | Rockwell B scale | Rockwell F scale | Rockwell 30T scale | Shear Strength (ksi) | Section Size (in) | Cold Work (%) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| * Measured at room temperature, 68°F (20°C). | |||||||||||
| Rod | As Hot Rolled | M20 | 32 Typ | 10 Typ | 55 Typ | 40 Typ | 22 Typ | 1 | |||
| Hard | H04 | 55 Typ | 50 Typ | 10 Typ | 60 Typ | 94 Typ | 29 Typ | 0.25 | 40 | ||
| Hard | H04 | 45 Typ | 40 Typ | 20 Typ | 45 Typ | 85 Typ | 26 Typ | 2 | 16 | ||
| Hard | H04 | 48 Typ | 44 Typ | 16 Typ | 47 Typ | 87 Typ | 27 Typ | 1 | 35 | ||
| Nominal Grain Size 0.050 mm | OS050 | 32 Typ | 10 Typ | 55 Typ | 40 Typ | 22 Typ | 1 | ||||
Yes, Copper C11500 Bars and Rods can be susceptible to galvanic corrosion when in contact with dissimilar metals, especially in the presence of an electrolyte. Proper insulation or coatings can prevent this.
Yes, Copper C11500 Bars and Rods are suitable for hygienic and sanitary applications due to their natural antimicrobial properties. However, regular maintenance and cleaning are essential to maintain hygiene standards.
Copper C11500 Bars and Rods can be used for natural gas applications, offering excellent corrosion resistance and conductivity. However, they may require additional protective coatings in specific environments to prevent corrosion.
C11500 bars and rods are extensively applied in power distribution networks, switchgear parts, electric motor components, and high-temperature electrical connectors. The alloy is particularly prized for resistance welding tips, spring portions that carry current, parts for circuit breakers, and generator windings. Its good conductivity and resistance to softening make it an ideal material for parts that need to hold shape and function under electrical or thermal stresses. C11500 is also utilized in industrial control panels, rail systems, grounding conductors, and resistance heating equipment. Its enhanced thermal fatigue characteristics qualify it for applications in continuous-service electrical products subject to temperature change.






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