Copper Alloy (UNS C18090)

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Fabrication
Applications

Introduction

Copper and its alloys are used in numerous applications ranging from electrical to engineering. There are more than 400 copper alloys available in the market today.

UNS C18090 copper alloy is resistant to non-oxidizing acids, pure water vapor, alkalis and neutral saline solutions. The material is resistant to stress corrosion cracking.

The following datasheet discusses the chemical composition and properties of copper UNS C18090.

Chemical Composition

The chemical composition of copper UNS C18090 is given in the following table.

Element Content (%)
Tin, Sn 0.6
Nickel, Ni 0.4
Chromium, Cr 0.3
Titanium, Ti 0.3
Copper, Cu Balance

Physical Properties

The following table discusses the physical properties of copper UNS C18090.

Properties Metric Imperial
Density 8.85 g/cm3 0.320 lb/in3

Mechanical Properties

The mechanical properties of copper UNS C18090 (H02-Temper) are tabulated below.

Properties Metric Imperial
Tensile strength 482-579 MPa 70 - 84 ksi

Thermal Properties

The thermal properties of copper UNS C18090 are tabulated below.

Properties Metric Imperial
Thermal conductivity 20 W/mK 139 BTU in/hr.ft².°F

Fabrication

Copper UNS C18090 alloy cannot be readily machined; however it can be cold worked easily. This alloy is weldable using gas shielded arc welding technique. It can also be welded using laser welding and resistance welding techniques.

Applications

Copper UNS C18090 finds application in:

  • Relay springs
  • Connectors
  • Contact springs
  • Semiconductor components
  • Components for the electrical industry sector

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