Fabrication and Heat Treatment
Unalloyed copper or oxygen free coppers are provided with high
thermal and electrical properties and good corrosion resistance. Based
on the amount of impurities present in the metal, the properties and
grades of unalloyed coppers vary. The commercially available pure
coppers are designated as C10100 to C13000. These oxygen free coppers
are best suited for applications, which require good ductility and high
The following datasheet will give an outline of UNS C10400
oxygen free silver-bearing copper.
The following table shows the chemical composition of UNS
The physical properties of UNS C10400 copper are given in the
The mechanical properties of UNS C10400 copper are
|Tensile strength, ultimate
||221 - 455 MPa
||32100 - 66000 psi
|Tensile strength, yield (depending
||69.0 - 365 MPa
||10000 - 52900 psi
|Elongation at break (in 101.6 mm[4
|Modulus of elasticity
|Poissons ratio (calculated)
|Machinability (UNS C36000
(free-cutting brass) = 100%)
The designations that are equivalent to UNS C10400 copper
are outlined in the following table.
Fabrication and Heat
The machinability rate of UNS C10400 copper is 20%.
Welding procedures such as soldering, brazing, gas shielded
arc welding, oxyacetylene welding and butt welding are recommended for
UNS C10400 copper. Other welding methods such as coated metal arc
spot welding and seam welding are not preferred.
UNS C10400 copper is forged at hot working temperatures
from 760 to 871°C (1400 to 1600°F). The hot forgeability rate of this
metal is 65%.
UNS C10400 copper has excellent hot working property.
UNS C10400 copper has excellent cold working property.
Annealing of C10400 copper is performed at temperatures
ranging from 482 to 760°C (700 to 1200°F).
UNS C10400 copper is suitable for electrical conductors that
are operated at high temperatures.