Is it possible to alloy copper with nickel to achieve a minimum tensile strength of 375 MP...

Is it possible to alloy copper with nickel to achieve a minimum tensile strength of 375 MPa (54,400 psi) and yet maintain an electrical conductivity of 2.5 × 106 (Ω • m)–1? If not, why? If so, what concentration of nickel is required? See Figure 8.16a.

Figure 8.16 Variation with nickel content of (a) tensile strength,