Is it possible to alloy copper with nickel to achieve a minimum yield strength of 130 MPa...

Is it possible to alloy copper with nickel to achieve a minimum yield strength of 130 MPa (19,000 psi) and yet maintain an electrical conductivity of 4.0 × 106 (Ω•m)–1? If not, why? If so, what concentration of nickel is required? See Figure 7.16b.

Figure 7.16 Variation with nickel content of (b) yield strength for copper–nickel alloys, showing strengthening.