High Strength Modified Copper (UNS C19400)

Oct 25 2012

Topics Covered

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

Introduction

The high strength modified copper UNS C19400 has good electrical and thermal conductivity. Various alloys of copper differ in their behavior based on the alloyed elements. UNS C19400 is anti-corrosive and ductile.

The following datasheet discusses the chemical composition, properties and heat treatment of copper UNS C19400.

Chemical Composition

The chemical composition of UNS C19400 alloy is shown in the following table.

Element Content(%)
Copper, Cu 97.5
Iron, Fe 2.4
Zinc, Zn 0.13
Phosphorus, P 0.03

Physical Properties

The following table discusses the physical properties of copper UNS C19400.

Properties Metric Imperial
Density 8.8 - 8.94 g/cm3 0.317 - 0.322 lb/in³

Mechanical Properties

The mechanical properties of copper UNS C19400 are given in the following table.

Properties Metric Imperial
Poisson's ratio 0.34 0.34
Elastic modulus 117 GPa 16969 ksi

Other Designations

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The designations equivalent to copper UNS C19400 include:

  • ASME SB543
  • ASTM B465
  • ASTM B543
  • ASTM B638
  • ASTM B640
  • ASTM B694
  • ASTM B698
  • UNS C19400

Fabrication and Heat Treatment

Machinability

UNS C19400 alloy has a machinability rate of 20.

Forging

Copper UNS C19400 is hot forged at working temperatures between 760 and 871ºC (1400 and 1600ºF) with a forging rate of 65.

Welding

The welding methods preferred for UNS C19400 are soldering, brazing, oxyacetylene welding, butt welding and gas shielded arc welding. Coated metal arc welding, spot welding and seam welding are not recommended for this alloy.

Hot Working

UNS C19400 has excellent hot working property.

Cold Working

Copper UNS C19400 can be cold worked.

Annealing

Temperatures between 371 and 648ºC (700 and 1200ºF) are preferred for annealing UNS C19400.

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