Chromium Copper Alloy Mill Products
Request a Chromium Copper Alloy Quote
Auremo LLC supports U.S. inquiries for chromium copper alloys used in welding, electrical, tooling and heat-transfer applications. Submit the required UNS grade, form and dimensions for review.
Product forms
- Rod and bar
- Wire
- Tube and pipe
- Sheet and plate
- Strip
Information to include in your request
Please provide the material grade or specification, product form, dimensions and tolerances, quantity, delivery ZIP code and required documentation. Pricing, availability and lead time are confirmed for each quotation.
Frequently asked questions
How is the price for chromium copper alloy products confirmed?
The quotation is based on the exact grade, dimensions, tolerances, quantity, documentation and delivery requirements supplied with the inquiry.
Can non-standard dimensions be requested?
Yes. Send a drawing or dimensional requirements with the inquiry. Manufacturing or sourcing feasibility is confirmed during quotation.
What information is available for delivery in the United States?
Provide the destination ZIP code. Available freight options, lead time and delivery terms will be included in the commercial response.
Related products
Technical characteristics
Chromium Copper is alloyed with chrome copper, which relates to European bronze mill-products. Chromium Copper contains 0.6−1.2% of Cr, which gives copper alloy an extra strength and corrosion resistance. At that, it keeps excellent workability that is inherent to pure copper. Alloy is easily processed in cold condition. It can be forged, cut, polished. Alloy can be designated as UNS C18050 — C18600, casted alloys C81400 — C81540. These semi-fabricates are made of chromium copper: rod, pipe, sheet, strip.
Percentage composition of C18200
| Cu | Cr | residual elements |
| 98,8−99.1 | 0,8−0,9 | ≤ 0,2 |
Physical features
Volume weight: 8,89 g/cm3
Melting point (liquidus): 1075 °C (1967°F)
(Solidus): 1070 °C (1958°F)
Coefficient of thermal expansion (77−212°F) 9,810-6
Electrical conductivity at 68 ° F: 80% IACS
Thermal conductivity Btu / ft.2 / ft / h / ° F at 68°F:187
Chromium copper keeps its strength at elevated temperatures. Its corrosion resistance is better than in pure copper because chrome forms a protective oxide film. Although electrical conductivity of alloy slightly vanishes, it remains at high level 80% of IACS or 85% of pure copper.
Heat treatment
Alloyed with chrome copper can be thermohardened. Chrome is deposited from a solid solution by changing alloy properties at temperature increasing. Alloy structure becomes a two-phase mixture of chrome and alpha copper at slow cooling.
Application
It is used in manufacture of welding electrodes of resistance, welding wheels, distributing devices, cable campers, parts of die-moulds, manufacture of heat exchangers and cryogenic equipment.
