This article discusses the influence of heat treatment (HT) on the formation of the structure and mechanical properties of nickel–chrome–silicon bronze BrNHK2.5–0.7–0.6. It also presents the results of studies on increasing the alloy strength and elasticity by optimizing HT modes. The data reveal the significant influence of the pre-aging treatment and aging modes on the structure and the possibility of additional improvement on the mechanical properties of the wire from BrNHK2.5–0.7–0.6.