Copper Alloy (UNS C72650)

Jul 10 2013

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Applications

Introduction

UNS C72650 copper alloy has high conductivity, high strength and formability, and excellent solderability. It also possesses good resistance to stress relaxation during high temperature of more than 204°C (400°F) while soldering. This alloy has fine grain size, and is easy to plate when required.

The following datasheet discusses the chemical composition and properties of copper UNS C72650.

Chemical Composition

The chemical composition of UNS C72650 copper alloy is outlined in the following table.

Element Content (%)
Nickel, Ni 7-8
Tin, Sn 4.5-5.5
Manganese, Mn 0.1
Iron, Fe 0.1
Zinc, Zn 0.1
Lead, Pb 0.01
Copper, Cu Balance

Physical Properties

The following table discusses the physical properties of copper UNS C72650.

Properties Metric Imperial
Density 8.87 g/cm3 0.320 lb/in3

Mechanical Properties

The mechanical properties of UNS C72650 (TM02-temper) are tabulated below.

Properties Metric Imperial
Tensile strength 792 - 930 MPa 115000 - 135000 ksi
Yield strength 620 - 758 MPa 89900 - 110000 ksi
Modulus of elasticity 124 GPa 18000 ksi
Elongation at break 10 - 18 % 10 - 18 %
Hardness, Vickers 270 - 340 270 - 340

Applications

Copper UNS C72650 finds application in contacts in sockets, switches and connectors.

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