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Glossary » Materials » Alloys » Copper Alloy » Cast » UNS C99400
UNS C99400 is a Special Alloy grade Cast Copper Alloy. It is composed of (in weight percentage) 90.4% Copper (Cu), 2.2% Nickel (Ni), 2.0% Iron (Fe), 1.2% Aluminum (Al), 1.2% Silicon (Si), and 3.0% Zinc (Zn). Another common designation of UNS C99400 copper alloy is UNS C99400.
Copper is one of the most useful metals known to man, and it was one of the first to be utilized. Copper is a reddish-yellow material and is extremely ductile. Copper has a face-centered-cubic (fcc) crystal structure and has the second best electrical conductivity of the metals, second only to silver compared to which it has a conductivity of 97%. The thermal conductivity of copper is very high, falling in between silver and gold. There are almost 400 different copper alloys depending on the commercial product made; rods, plates, sheets, strips, tubes, pipes, extrusions, foils, forgings, wires, and castings from foundries.

The typical elastic modulus of copper alloys at room temperature (25°C) is about 117 GPa. The typical density of copper alloys ranges from 8.8 to 8.94 g/cm3. The typical tensile strength varies between 172 and 220 MPa. The wide range of ultimate tensile strength is largely due to different heat treatment conditions.

Additional Information
Other common Cast Copper Alloys include UNS C80100, UNS C80300, UNS C80500, UNS C80700, UNS C80900, UNS C81100, UNS C81300, UNS C81400, UNS C81500, UNS C81700, UNS C81800, UNS C82000, UNS C82100, UNS C82200, UNS C82400, UNS C82500, UNS C82600, UNS C82700, UNS C82800, UNS C83300, UNS C83400, UNS C83600, UNS C83800, UNS C84200, UNS C84400, UNS C84500, UNS C84800, UNS C85200, UNS C85400, UNS C85500, UNS C85700, UNS C85800, UNS C86100, UNS C86200, UNS C86300, UNS C86400, UNS C86500, UNS C86700, UNS C86800, UNS C87200, UNS C87400, UNS C87500, UNS C87600, UNS C87800, UNS C87900, UNS C90200, UNS C90300, UNS C90500, UNS C90700, UNS C90800, UNS C90900, UNS C91000, UNS C91100, UNS C91300, UNS C91600, UNS C91700, UNS C92200, UNS C92300, UNS C92400, UNS C92500, UNS C92600, UNS C92700, UNS C92800, UNS C92900, UNS C93200, UNS C93400, UNS C93500, UNS C93700, UNS C93800, UNS C93900, UNS C94000, UNS C94100, UNS C94300, UNS C94400, UNS C94500, UNS C94700, UNS C94800, UNS C94900, UNS C95200, UNS C95300, UNS C95400, UNS C95410, UNS C95500, UNS C95600, UNS C95700, UNS C95800, UNS C96200, UNS C96300, UNS C96400, UNS C96600, UNS C96700, UNS C97300, UNS C97400, UNS C97600, UNS C97800, UNS C98200, UNS C98400, UNS C98600, UNS C98800, UNS C99300, UNS C99500, UNS C99600, UNS C99700, and UNS C99750.
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