High-strength, high-elasticity and high-conductivity copper alloy

Abstract

The invention discloses a high-strength, high-elasticity and high-conductivity copper alloy. The copper alloy comprises the following chemical components: 0.005-2.0 wt% of Cr, 0.001-0.5 wt% of Zr, 2.5-5.0 wt% of Ni, 0.1-1.0 wt% of Co, 0.4-1.6 wt% of Si, 0.01-0.2 wt% of Mg, and the balance Cu. The high-strength, high-elasticity and high-conductivity copper alloy uses copper, chromium, zirconium, nickel, cobalt, silicon, magnesium, titanium, lanthanum and cerium as main components, and has the yield strength above 800 MPa, the elastic modulus above 130 GPa and the electric conductivity above 50% IACS; the comprehensive performance and the environmentally friendly performance of the copper alloy are both superior to that of an existing common material for producing electronic connectors and lead frames; and the copper alloy is an ideal material for producing the electronic connectors and the lead frames. The invention provides the copper alloy with high yield strength, high elastic modulus and excellent electric conductivity for the electronic connectors and the lead frames needed by miniaturization, lightness and high integration of electronic and communication equipment.

Description

technical field [0001] The invention relates to the field of high-strength, high-elasticity, and high-conductivity copper alloys, in particular to a copper alloy with excellent yield strength, high electrical conductivity, and high elasticity, and its strip products are mainly used in electronic connectors, lead frames, and the like. Background technique [0002] Electronic connectors, also known as electronic connectors, are widely used in the electronics industry. Their function is to connect two conductors on a circuit so that current or signals can flow from one conductor to another. Electronic connectors are widely used in various electrical circuits to connect or disconnect current or signals. This connection may be temporary and convenient to plug and unplug at any time, or it may be a permanent connection node between electrical equipment or wires. Electronic connectors can be used as electrical / electronic transmission connection parts between circuits, components, a...

AI Technical Summary

Problems solved by technology

Although the conductivity of CuCrZr alloy can reach more than 80% IACS, its yield strength is lower than 600MPa, which cannot meet the performance requirements of the rapidly developing electronic connectors and lead frames for copper alloy strips.

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