Copper-Nickel-Silicon Flat Products (UNS C64775) – Mechanical Properties

UNS C64775 copper-nickel-silicon has a copper content of not less than 95.7%.

The following table shows the mechanical properties of UNS C64775 flat products as a function of heat treatment.

Temper Tensile Str. Yield Str. Elong.
H04 730 MPa (106 ksi) 675 MPa (98 ksi) -
790 MPa (115 ksi) 740 MPa (107 ksi) 7%
830 MPa (120 ksi) 775 MPa (112 ksi) -

The chemical composition of UNS C64775 copper alloy is outlined in the following table.

Element Content (%)
Nickel, Ni 1.5-3.5
Chromium, Cr 0.5
Silicon, Si 0.40-0.9
Zinc, Zn 0.30-0.8
Magnesium, Mg 0.3
Iron, Fe 0.1
Manganese, Mn 0.1
Tin, Sn 0.05-1.0
Lead, Pb 0.05
Copper, Cu Remainder

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