Nov 14 2012
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Other Designations
Fabrication and Heat Treatment
Machinability
Welding
Forging
Hot Working
Cold Working
Annealing
Applications
Introduction
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
conductivity performance.
The following datasheet will give an outline of UNS C10400
oxygen free silver-bearing copper.
Chemical Composition
The following table shows the chemical composition of UNS
C10400 copper.
| Element |
Content
(%) |
| Cu, Copper |
99.95 |
| Ag, Silver |
0.025 |
Physical Properties
The physical properties of UNS C10400 copper are given in the
following table.
| Properties |
Metric |
Imperial |
| Density |
8.94 g/cm3 |
0.323 lb/in3 |
| Melting point |
1083°C |
1981°F |
Mechanical Properties
The mechanical properties of UNS C10400 copper are
tabulated below.
| Properties |
Metric |
Imperial |
| Tensile strength, ultimate |
221 - 455 MPa |
32100 - 66000 psi |
| Tensile strength, yield (depending
on temper) |
69.0 - 365 MPa |
10000 - 52900 psi |
| Elongation at break (in 101.6 mm[4
in.]) |
55.00% |
55.00% |
| Modulus of elasticity |
115 GPa |
16700 ksi |
| Poissons ratio (calculated) |
0.300 |
0.300 |
| Machinability (UNS C36000
(free-cutting brass) = 100%) |
20% |
20% |
| Shear modulus |
44.0 GPa |
6380 ksi |
Other Designations
The designations that are equivalent to UNS C10400 copper
are outlined in the following table.
| ASME SB152 |
ASTM B188 |
ASTM B3 |
| ASTM B1 |
ASTM B189 |
ASTM B355 |
| ASTM B133 |
ASTM B2 |
ASTM B49 |
| ASTM B152 |
ASTM B224 |
ASTM B506 |
| ASTM B187 |
ASTM B246 |
MIL B-20292 |
Fabrication and Heat
Treatment
Machinability
The machinability rate of UNS C10400 copper is 20%.
Welding
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
welding,
spot welding and seam welding are not preferred.
Forging
UNS C10400 copper is forged at hot working temperatures
ranging
from 760 to 871°C (1400 to 1600°F). The hot forgeability rate of this
metal is 65%.
Hot Working
UNS C10400 copper has excellent hot working property.
Cold Working
UNS C10400 copper has excellent cold working property.
Annealing
Annealing of C10400 copper is performed at temperatures
ranging from 482 to 760°C (700 to 1200°F).
Applications
UNS C10400 copper is suitable for electrical conductors that
are operated at high temperatures.