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Copper Silver Alloy (Cu-Ag) Sheets, Rods & Bars
Product Overview
Copper Silver Alloy (Cu-Ag) Sheets, Rods & Bars offered by R V Metal Corporation are high-performance copper alloys engineered for applications demanding superior electrical conductivity combined with enhanced mechanical strength and thermal stability. By alloying high-purity copper with a controlled percentage of silver, these products retain near-copper conductivity while significantly improving softening resistance at elevated temperatures. This makes Cu-Ag alloys the preferred material for critical electrical, electronic, power transmission, welding, and high-temperature contact applications where standard copper grades fail to maintain performance. Available in sheets, rods, and bars, Copper Silver Alloys from R V Metal Corporation are produced with tight dimensional control, uniform microstructure, and excellent surface finish, ensuring consistent performance, long service life, and full compliance with international standards for demanding industrial and OEM requirements.
Technical Specifications
| Parameter | Specification |
|---|---|
| Material Type | Copper Silver Alloy (Cu-Ag) |
| Silver Content | 0.03% – 0.12% Ag (custom higher Ag % available on request) |
| Available Forms | Sheets, Plates, Rods, Bars, Flats (Custom profiles on request) |
| Manufacturing Process | Hot Rolled / Cold Rolled / Extruded / Drawn |
| Thickness Range (Sheets / Plates) | 0.2 mm to 50 mm |
| Diameter Range (Rods / Bars) | 6 mm to 200 mm |
| Standard Length | 3000 mm, 4000 mm, 6000 mm or Cut to Length |
| Temper / Condition | Annealed (O), Half Hard (H02), Hard (H04), Extra Hard (H08) |
| Electrical Conductivity | 97% – 101% IACS (depending on Ag content and temper) |
| Thermal Conductivity | 360 – 390 W/m·K |
| Softening Temperature | ~250°C – 350°C (higher than ETP copper) |
| Density | ≈ 8.95 g/cm³ |
| Surface Finish | Mill Finish, Bright Drawn, Polished (as specified) |
| Dimensional Tolerance | As per ASTM / EN / DIN / IS standards or customer specification |
| Standards Compliance | ASTM, EN, DIN, BS, JIS, IS (Grade-dependent) |
| Weldability | Excellent (Resistance & TIG welding preferred) |
| Machinability | Good (Improved over pure copper) |
| Quality Documentation | Mill Test Certificate (EN 10204 3.1), Chemical & Mechanical Reports |
| Typical Applications | Electrical contacts, commutators, welding electrodes, high-temperature conductors |
Chemical Composition
| Element | Composition (% by Weight) |
|---|---|
| Copper (Cu) | Balance (≥ 99.80%) |
| Silver (Ag) | 0.03% – 0.12% (Higher Ag content available on request for high-temperature applications) |
| Oxygen (O) | ≤ 0.02% |
| Iron (Fe) | ≤ 0.005% |
| Lead (Pb) | ≤ 0.005% |
| Zinc (Zn) | ≤ 0.005% |
| Nickel (Ni) | ≤ 0.005% |
| Other Impurities (Total) | ≤ 0.05% |
UNS Codes & Grades
| UNS Code | Common Grade / Designation | Silver Content (% Ag) | Base Copper Type | Typical Product Forms | Key Characteristics |
|---|---|---|---|---|---|
| C10700 | CuAg 0.04 | 0.03 – 0.05 | ETP Copper (Cu ≥ 99.9%) | Sheets, Rods, Bars, Busbars | Improved softening resistance, high electrical conductivity |
| C10800 | CuAg 0.10 | 0.08 – 0.12 | ETP Copper (Cu ≥ 99.9%) | Sheets, Rods, Bars | Excellent conductivity with enhanced high-temperature strength |
| C10900 | CuAg 0.15 | 0.12 – 0.18 | High-Purity Copper | Rods, Bars, Special Sections | Superior creep resistance at elevated temperatures |
| — | CuAg Custom Alloy | 0.20 – 0.50* | High-Purity Copper | Rods, Bars, Forged Sections | Specialized electrical & thermal applications |
Note: Higher silver contents (above 0.15% Ag) are typically supplied against custom specification
for high-temperature electrical conductors, resistance welding components, and aerospace applications.
Mechanical, Physical & Fabrication Properties
| Property Category | Property | Typical Value / Range | Remarks |
|---|---|---|---|
| Mechanical Properties | Tensile Strength | 220 – 420 MPa | Depends on Ag content, temper (O, H02, H04) and cold work |
| Yield Strength (0.2%) | 70 – 300 MPa | Significantly higher than pure copper after cold working | |
| Elongation | 10 – 40% | Higher in annealed condition | |
| Hardness | 50 – 130 HB | Increases with silver content and work hardening | |
| Creep Resistance | Excellent | Superior to ETP/DHP copper at elevated temperatures | |
| Physical Properties | Density | ≈ 8.94 g/cm³ | Very close to pure copper |
| Electrical Conductivity | 95 – 102 % IACS | Silver improves conductivity retention at high temperature | |
| Thermal Conductivity | 360 – 390 W/m·K | Excellent heat dissipation | |
| Softening Temperature | 250 – 400°C | Much higher than pure copper (~200°C) | |
| Coefficient of Thermal Expansion | ≈ 16.5 × 10⁻⁶ /°C | Stable dimensional behavior | |
| Fabrication Properties | Formability | Excellent | Best in annealed condition |
| Machinability | Good | Comparable to high-purity copper | |
| Weldability | Excellent | Suitable for TIG, MIG, resistance welding | |
| Brazing / Soldering | Excellent | Commonly used in electrical brazed joints | |
| Annealing Behavior | Stable | Silver delays recrystallization | |
| Surface Finish Capability | Excellent | Suitable for bright finish and precision components |
Common Names & International Identifiers
| Category | Common / Trade Name | International Identifier | Description / Notes |
|---|---|---|---|
| Generic Name | Copper Silver Alloy | Cu-Ag | Copper alloyed with small percentage of silver for high conductivity and strength |
| UNS Designation | Silver-Bearing Copper | C10700 / C10800 | UNS standard silver-bearing copper grades |
| EN / DIN | CuAg0.04 / CuAg0.1 | EN CW013A / CW014A | European designation based on silver percentage |
| ISO | Silver Copper Alloy | ISO CuAg | International generic identification |
| ASTM | Silver-Bearing Copper | ASTM B170 / B224 | Used for sheets, rods and bars in electrical applications |
| BS (British) | CuAg Alloy | BS C107 / C108 | British Standard silver copper grades |
| JIS | Silver Copper | JIS C1070 / C1080 | Japanese equivalent for silver-bearing copper |
| Industry Term | High Conductivity Copper Alloy | — | Commonly used term in electrical & power industries |
| Electrical Industry | High-Temperature Copper | — | Refers to improved softening resistance vs pure copper |
| Aerospace / Power | Silver Copper Conductors | — | Used in high-current, high-temperature conductors |
Standards & International Equivalents
| Region / Standard Body | Standard Number | Grade / Designation | Product Form | Remarks |
|---|---|---|---|---|
| ASTM (USA) | ASTM B170 | C10700, C10800 | Sheets, Plates, Strips | Silver-bearing copper for improved softening resistance |
| ASTM (USA) | ASTM B224 | C10700, C10800 | Rods, Bars, Shapes | High electrical conductivity with enhanced strength |
| ASTM (USA) | ASTM B187 | C10700, C10800 | Billets & Forgings | Used as feedstock for extrusion and forging |
| EN (Europe) | EN 1652 | CuAg0.04 (CW013A) | Sheets, Strips | European wrought copper-silver alloy |
| EN (Europe) | EN 12163 | CuAg0.04 (CW013A) | Rods & Bars | Machining and general engineering applications |
| EN (Europe) | EN 12164 | CuAg0.04 (CW013A) | Rods (Free machining) | Precision machined components |
| EN (Europe) | EN 12167 | CuAg0.04 (CW013A) | Profiles & Sections | Extruded profiles and custom sections |
| ISO | ISO 431 | CuAg | Wrought Products | International designation for copper-silver alloys |
| BS (United Kingdom) | BS 2870 / BS 2874 | C107, C108 | Sheets, Strips, Bars | British equivalent of ASTM silver-bearing copper |
| JIS (Japan) | JIS H3100 | C1070, C1080 | Sheets, Plates, Strips | Japanese standard for high-conductivity copper alloys |
| JIS (Japan) | JIS H3250 | C1070, C1080 | Rods & Bars | Used in electrical and thermal applications |
| DIN (Germany) | DIN 17661 | CuAg0.04 | Sheets, Rods, Bars | German standard, superseded by EN equivalents |
| IS (India) | IS 1897 / IS 613 | Cu-Ag Alloys | Sheets, Rods, Bars | Indian standards aligned with ASTM/EN grades |
Applications
| Industry / Sector | Application | Product Form Used | Why Copper Silver Alloy (Cu-Ag) |
|---|---|---|---|
| Electrical & Power Transmission | High-current busbars, switchgear contacts | Sheets, Bars | Maintains high electrical conductivity with improved softening resistance at elevated temperatures |
| Electronics & Semiconductors | Lead frames, connectors, terminals | Strips, Rods | Excellent conductivity combined with better mechanical stability during thermal cycling |
| Railways | Overhead contact wires, current collectors | Rods, Bars | Enhanced creep resistance and wear resistance under continuous electrical load |
| Aerospace | Electrical contacts, grounding components | Bars, Precision Rods | Reliable performance under high temperature and vibration conditions |
| Automotive | EV busbars, battery connectors | Sheets, Bars | Low resistive losses and improved heat resistance for high-current applications |
| Welding Industry | Resistance welding electrodes & holders | Rods, Bars | Superior softening resistance compared to pure copper |
| Industrial Furnaces | High-temperature electrical conductors | Bars, Plates | Retains strength and conductivity at elevated service temperatures |
| Telecommunications | Signal transmission components | Sheets, Strips | Stable conductivity with long service life |
| Renewable Energy | Solar and wind power electrical connectors | Sheets, Bars | High efficiency power transfer with thermal reliability |
| General Engineering | Precision machined electrical parts | Rods, Bars | Good machinability with superior electrical performance |
Common Copper Silver Alloy (Cu-Ag) Forms & Dimensions Chart
| Copper Silver Alloy (Cu-Ag) – Common Supply Forms & Standard Dimension Ranges | |||||
|---|---|---|---|---|---|
| Product Form | Thickness / Diameter Range | Width / AF / OD Range | Standard Length / Coil | Temper / Condition | Notes |
| Sheets | 0.50 – 10.00 mm | 600 – 1250 mm | 1000 – 3000 mm | O / H02 / H04 / H08 | Sheared edges or mill edges; custom cut-to-size available |
| Plates | 10.00 – 80.00 mm | 600 – 2000 mm | 1000 – 6000 mm | As-rolled / Stress-relieved | For heavy electrical & high-temperature conductor applications |
| Strips / Coils | 0.05 – 3.00 mm | 10 – 600 mm | Coil (ID/OD as per customer) | O / H02 / H04 / H08 | Precision slit widths; suitable for stamping & connector parts |
| Round Rods | Ø 6.00 – 150.00 mm | — | 2m / 3m / 4m / 6m | As-extruded / Drawn / Annealed | Machining grades; welding-electrode holders & electrical parts |
| Bars / Flats | 3.00 – 50.00 mm | 10 – 200 mm | 3m / 4m / 6m | H02 / H04 / H08 | Busbar-ready; drilling/punching possible on request |
| Square / Hex Bars | AF 8.00 – 80.00 mm | — | 3m / 4m / 6m | Drawn / Extruded | Common for turned components, terminals and precision fittings |
| Cu-Ag Sheets / Plates – Theoretical Weight Chart (kg/m²) | |||||
|---|---|---|---|---|---|
| Thickness (mm) | kg/m² (Approx.) | Thickness (mm) | kg/m² (Approx.) | Thickness (mm) | kg/m² (Approx.) |
| 0.50 | 4.45 | 2.00 | 17.80 | 6.00 | 53.40 |
| 0.80 | 7.12 | 3.00 | 26.70 | 8.00 | 71.20 |
| 1.00 | 8.90 | 4.00 | 35.60 | 10.00 | 89.00 |
| 1.20 | 10.68 | 5.00 | 44.50 | 12.00 | 106.80 |
| 1.50 | 13.35 | 5.50 | 48.95 | 15.00 | 133.50 |
| Cu-Ag Round Rods – Theoretical Weight Chart (kg/m) | ||||
|---|---|---|---|---|
| Diameter (mm) | Cross-Section (mm²) | kg/m (Approx.) | Diameter (mm) | kg/m (Approx.) |
| 6 | 28.27 | 0.252 | 30 | 6.29 |
| 8 | 50.27 | 0.447 | 40 | 11.18 |
| 10 | 78.54 | 0.699 | 50 | 17.47 |
| 12 | 113.10 | 1.007 | 60 | 25.16 |
| 16 | 201.06 | 1.789 | 75 | 39.29 |
| 20 | 314.16 | 2.796 | 100 | 69.90 |
| 25 | 490.87 | 4.368 | 150 | 157.28 |
| Cu-Ag Flats / Bars – Theoretical Weight Chart (kg/m) | |||||
|---|---|---|---|---|---|
| Size (Thickness × Width) mm | Area (mm²) | kg/m (Approx.) | Size (Thickness × Width) mm | Area (mm²) | kg/m (Approx.) |
| 3 × 20 | 60 | 0.534 | 10 × 50 | 500 | 4.450 |
| 3 × 40 | 120 | 1.068 | 12 × 50 | 600 | 5.340 |
| 5 × 25 | 125 | 1.113 | 10 × 75 | 750 | 6.675 |
| 5 × 50 | 250 | 2.225 | 12 × 75 | 900 | 8.010 |
| 6 × 40 | 240 | 2.136 | 10 × 100 | 1000 | 8.900 |
| 8 × 50 | 400 | 3.560 | 12 × 100 | 1200 | 10.680 |
Notes:
- Weights shown are theoretical and based on copper-alloy density ≈ 8.90 g/cm³. Actual weights may vary with tolerances, surface finish, temper and silver percentage.
- For cut-to-length orders, billing weight is generally based on theoretical weight unless otherwise agreed.
- Custom dimensions, precision tolerances, deburring, drilling, slitting and CNC-ready supply are available on request.
