High Conductivity Chromium Zirconium Copper Alloy UNS C18100

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Fabrication and Heat Treatment
     Welding
     Forging
     Hot Working
     Cold Working
     Annealing
Applications

Introduction

UNS C18100 high conductivity chromium zirconium copper alloys are the alloys containing chromium, zirconium and copper in specific amounts. They have good strength at high temperatures and excellent wear resistance property. The following datasheet will discuss in detail about the UNS C18100 copper alloys.

Chemical Composition

The following table shows the chemical composition of UNS C18100 copper alloys.

Element Content (%)
Cr 0.6 - 0.80
Cu ≥ 98.45
Zr 0.10 - 0.15

Physical Properties

The physical properties of UNS C18100 copper alloys are given in the following table.

Properties Metric Imperial
Density 8.82 g/cm3 0.319 lb/in3

Mechanical Properties

The mechanical properties of UNS C18100 copper alloys are tabulated below.

Properties Metric Imperial
Tensile strength ≥ 415 MPa ≥ 60200 psi
Yield strength ≥ 345 MPa ≥ 50000 psi
Elongation at break ≥ 25.0% ≥ 25.0%

Fabrication and Heat Treatment

Welding

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C18100 copper alloys are welded using soldering, brazing, gas shielded arc welding and butt welding. Oxyacetylene welding, seam welding and spot welding are not preferred for this type of alloys.

Forging

C18100 copper alloys are forged at temperatures ranging from 788 to 927°C (1450 to 1700°F).

Hot Working

C18100 copper alloys have excellent hot working property.

Cold Working

C18100 copper alloys have good cold working property.

Annealing

Annealing of C18100 copper alloys is performed at temperatures ranging from 599 to 704°C (1110 to 1300°F).

Applications

The following are the major applications of UNS C18100 copper alloys:

  • Welding electrodes
  • Electrical components
  • Electrical contacts
  • Electrical studs

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