Topics CoveredIntroductionChemical CompositionPhysical PropertiesMechanical PropertiesThermal PropertiesOther DesignationsFabrication and Heat Treatment Machinability Welding Hot Working Cold Working AnnealingApplications
Copper-nickel alloys have excellent resistance to biofouling and marine corrosion, and possess good fabricability. Copper gains more strength and corrosion resistance when nickel is added to it.
UNS C70600 is one type of copper-nickel alloys, which has excellent corrosion resistance even in marine environments. This alloy possesses average high strength and good creep resistance at high temperatures, and costs more in comparison to copper-aluminum alloys and other alloys with similar mechanical properties.
The following datasheet will provide more details about UNS C70600 copper nickel alloy.
The following table shows the chemical composition of UNS C70600 copper nickel alloy.
The physical properties of UNS C70600 copper nickel alloy are outlined in the following table.
The mechanical properties of UNS C70600 copper nickel alloy are tabulated below.
|Yield strength (depending on temper)
|Elongation at break (in 254 mm)
|Machinability (UNS C36000 (free-cutting brass) = 100)
The thermal properties of UNS C70600 copper nickel alloy are tabulated below.
|Thermal expansion co-efficient (@20-300°C/68-572°F)
|Thermal conductivity (@20°C/ 68°F )
||278 BTU in/hr.ft².°F|
Equivalent materials to UNS C70600 copper nickel alloy are:
Fabrication and Heat Treatment
The machinability rate of UNS C70600 copper nickel alloy is 20.
Soldering, brazing, oxyacetylene welding, gas shielded arc welding, coated metal arc welding, spot welding, seam welding, and butt welding are considered as suitable for UNS C70600 alloy.
The hot working capacity of UNS C70600 copper nickel alloy is good with the recommended hot working temperature ranging between 760 and 816°C (1550 and 1750°F).
The cold working capacity of UNS C70600 is good.
The annealing temperature of UNS C70600 copper nickel alloy is between 593 and 816°C (1100 and 1500°F).
UNS C70600 copper nickel alloy is primarily used for seawater service as forged and machined valve and pump components, fittings and hardware. This alloy is also used in applications requiring high corrosion resistance and where chloride stress-corrosion cracking precaution prevents usage of stainless steels.