CuCr1 — C18200
CuCr1 – UNS.C18200 Chromium Copper is a heat treatable copper alloy offering good electrical conductivity, resistance to softening at elevated temperatures and good strength and hardness.
CuCr1 — C18200
CuCr1 – UNS.C18200 Chromium Copper is a heat treatable copper alloy offering good electrical conductivity, resistance to softening at elevated temperatures and good strength and hardness. This combination of properties makes C18200 one of the preferred resistance welding electrode materials for a variety of applications. Nominally composed of 99.1% copper and 0.9% chromium, this heat treatable alloy can be brought to its softest condition by annealing it at 1000°C (1850°F) for one-half hour at temperature, then rapidly quenching it in water. In this annealed condition, the alloy is ductile and easily formed, and has an electrical conductivity of about 40% IACS.
Where C18200 Is Used
Typical end uses published by ALB for this grade.
Electrical Industry
Cable, Connector, Thermal Conductors, Switch Gears, Electrical Connector, Circuit Breaker Parts, Switch Contacts, Electric Motor and Generator Components, Parts for electronic Devices
Consumer
Rod Extensions, Pencil-type, Light Soldering Guns, Tips
Industrial
Resistance Welding Machine Electrodes, Resistance Welding Equipment, Plastic Mold Components, Flash Welding Electrodes, Electrode Holder Jaws, Seam Welding Wheels, Wear Plates on Heavy Equipment, Heat Sinks, Spot Welding Tips, Molds
Specifications And Material Data
| Cr | 0.60-1.20% |
|---|---|
| Cu | Balance |
Copper plus additions equal 99.50% minimum.
| Density at 68°F | 0.321 Lbs./In.3 |
|---|---|
| Specific Gravity | 8.89 |
| Melting Point (Liquidus) | 1075°C (1967°F) |
| (Solidus) | 1070°C (1958°F) |
| Coefficient of Thermal Expansion per °F | 9.8 x 10-6 (77-212°F) |
| Electrical Conductivity at 68°F (volumetric) | 80% IACS (solution heat treated, cold worked 50% minimum and aged) |
| Thermal Conductivity Btu/ft.2/ft./hr./°F at 68°F | 187 (solution heat treated, cold worked 50% minimum and aged) |
| 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, Rectangular bars, Hexagon bars, Plates
Custom shapes are available upon request.
International Specification
| Rods/Bars/Plates/Sheets | UNS.C18200, RWMA Class 2, CDA18200, ISO5182-1991 |
|---|---|
| European Standards | CuCr, DIN 2.1291, CW105C to EN |
Unless otherwise specified, material will be produced to RWMA Grade.
Tempers And Mechanical Data
The detailed Mechanical Properties will be available on request from customers.
| Rods/Bars/Tubes | AT(TF00), HT (TH04) |
|---|---|
| Plates | AT(TF00), HT(TH04) |
Frequently Asked Questions
Answers drawn from the ALB technical data for this page.
What is the chemical composition of C18200?
C18200 is supplied to the following nominal composition:
- Cr: 0.60-1.20%
- Cu: Balance
What are the typical physical properties of C18200?
Typical values published by ALB for C18200:
- Density at 68°F: 0.321 Lbs./In.3
- Specific Gravity: 8.89
- Melting Point (Liquidus): 1075°C (1967°F)
- (Solidus): 1070°C (1958°F)
- Coefficient of Thermal Expansion per °F: 9.8 x 10-6 (77-212°F)
- Electrical Conductivity at 68°F (volumetric): 80% IACS (solution heat treated, cold worked 50% minimum and aged)
- Thermal Conductivity Btu/ft.2/ft./hr./°F at 68°F: 187 (solution heat treated, cold worked 50% minimum and aged)
- Modulus of Elasticity - Tension: 17,000 ksi
Which international specifications does C18200 meet?
- Rods/Bars/Plates/Sheets: UNS.C18200, RWMA Class 2, CDA18200, ISO5182-1991
- European Standards: CuCr, DIN 2.1291, CW105C to EN
Can you supply mechanical property data for C18200?
The detailed Mechanical Properties will be available on request from customers.
Which tempers are most commonly used?
- Rods/Bars/Tubes: AT(TF00), HT (TH04)
- Plates: AT(TF00), HT(TH04)
Which product forms and sizes are available?
Custom Diameter & Sizes, Random Mill lengths Round bars, Flat bars, Square bars, Rectangular bars, Hexagon bars, Plates 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 C18200 To Your Specification
Send grade, temper, dimensions and quantity. Custom shapes are available on request.