Copper Alloy (UNS C15715)

Topics Covered

Chemical Composition
Physical Properties


UNS C15715 is an aluminium / aluminum oxide dispersion-strengthened copper alloy with physical properties that are similar to pure copper. It possesses very good elevated-temperature mechanical properties.

The following datasheet discusses the chemical composition and properties of copper UNS C15715.

Chemical Composition

The chemical composition of copper UNS C15715 is given in the following table.

Element Content (%)
Copper, Cu + Silver, Ag Balance
Aluminium / aluminum, Al 0.13 - 0.17
Oxygen , O 0.12 - 0.19
Iron, Fe 0.01 max
Lead, Pb 0.01 max

Physical Properties

The following table discusses the physical properties of copper UNS C15715.

Properties Metric Imperial
Density 8.8 g/cm3 0.319 lb/in3
Melting point 1083°C 1981°F


Machinability - The machinability of copper UNS C15715 alloy is rated at 20.

Welding - Soldering is considered the best welding method for UNS C15715. Brazing is the next best choice. Butt welding is acceptable; however oxyacetylene welding, gas shielded arc welding, and coated metal arc welding are not recommended. Spot welding and seam welding can be performed but is of poor standard.

Forging - The hot forgeability rating of this alloy is 65.

Hot working of copper UNS C15715 alloy is poor.

Cold working of copper UNS C15715 alloy is excellent

Annealing - Copper UNS C15715 alloy can be annealed at temperatures ranging from 649 and 982ºC (1200 and 1800ºF).

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