CuCd1Sn — C16500
CuCd1Sn-UNS.C16500 Cadmium Tin Copper alloy offers an excellent and difficult to acquire combination of high tensile strength and good electrical conductivity.
CuCd1Sn — C16500
CuCd1Sn-UNS.C16500 Cadmium Tin Copper alloy offers an excellent and difficult to acquire combination of high tensile strength and good electrical conductivity. The nominal composition of 98.6% copper with cadmium and tin gives this alloy excellent strength and wear characteristics while retaining good thermal and electrical conductivity. It also has good corrosion resistance.
Meanwhile, C16500 Cadmium Tin Copper has good hot workability. Its cold working properties are excellent, and the alloy draws readily. It work hardens somewhat more readily than pure copper and may require intermediate annealing through an extensive set of cold working operations.

Where C16500 Is Used
Typical end uses published by Vital for this grade.
CuCd1Sn-UNS.C16500 Cadmium Tin Copper alloys:
Electrical Industry
Resistance Welding Electrodes, Circuit Breaker Switches, Stud Bases for Power Transmitters, Electrical Conductor Material
Consumer
Rod Extensions, Pencil-type, Light Soldering Guns, Tips
Industrial
Connectors, Solderless Wrapped, Welding Wheels, Trolley Wires
Specifications And Material Data
| Cd | 0.60-1.00% |
|---|---|
| Tin | 0.50-0.70% |
| Fe | 0.02% Max. |
| Cu | Reminder |
| Density at 68°F | 0.321 Lbs./In.3 |
|---|---|
| Specific Gravity | 8.90 |
| Melting Point (Liquidus) | 1070°C (1958°F) |
| Coefficient of Thermal Expansion per °F | 9.8 x 10-6 (77-212°F) |
| Electrical Conductivity at 68°F (volumetric) | 90% IACS (aged and drawn) |
| Thermal Conductivity Btu/ft.2/ft./hr./°F at 68°F | 146 |
| Modulus of Elasticity - Tension | 17,000 ksi |
1). the units are based upon US Customary. 2). the typical physical properties apply to age hardened products.
Sizes And Product Forms
Available Sizes
Custom Diameter & Sizes, Random Mill lengths
Available Products And Forms
Round bars, Flat bars, Square bars, Wires
Custom shapes are available upon request.
International Specification
| Rods/Bars/Wires | UNS.C16500, CDA 165, ASTM B105, ASTM B9 |
|---|---|
| European Standards | CuCd1Sn, DIN 17666 |
Unless otherwise specified, material will be produced to ASTM.
Abbreviations
- ASTM — American Society for Testing and Materials
Tempers And Mechanical Data
The detailed Mechanical Properties will be available on request from customers.
| Rods/Bars/Wires | 1/2 H (TD02), H (TD04), HT(TH04) |
|---|
Frequently Asked Questions
Answers drawn from the Vital technical data for this page.
What is the chemical composition of C16500?
C16500 is supplied to the following nominal composition:
- Cd: 0.60-1.00%
- Tin: 0.50-0.70%
- Fe: 0.02% Max.
- Cu: Reminder
What are the typical physical properties of C16500?
Typical values published by Vital for C16500:
- Density at 68°F: 0.321 Lbs./In.3
- Specific Gravity: 8.90
- Melting Point (Liquidus): 1070°C (1958°F)
- Coefficient of Thermal Expansion per °F: 9.8 x 10-6 (77-212°F)
- Electrical Conductivity at 68°F (volumetric): 90% IACS (aged and drawn)
- Thermal Conductivity Btu/ft.2/ft./hr./°F at 68°F: 146
- Modulus of Elasticity - Tension: 17,000 ksi
Which international specifications does C16500 meet?
- Rods/Bars/Wires: UNS.C16500, CDA 165, ASTM B105, ASTM B9
- European Standards: CuCd1Sn, DIN 17666
Can you supply mechanical property data for C16500?
The detailed Mechanical Properties will be available on request from customers.
Which tempers are most commonly used?
- Rods/Bars/Wires: 1/2 H (TD02), H (TD04), HT(TH04)
Which product forms and sizes are available?
Custom Diameter & Sizes, Random Mill lengths Round bars, Flat bars, Square bars, Wires Custom shapes are available upon request.
How do I request a quotation?
Email the grade, temper, dimensions and quantity to [email protected]. Unless otherwise specified, material is produced to ASTM.
Quote C16500 To Your Specification
Send grade, temper, dimensions and quantity. Custom shapes are available on request.







