Nov 15 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
UNS numbers C10100 to C13000 represent commercially pure copper. The high electrical and thermal conductivity in addition to good corrosion resistance determine the use of pure copper. Alloying of copper interferes with the electrical conductivity of the metal which signifies the importance of its purity. Behavior of different grades of unalloyed copper varies in the amount of impurities present in the metal.
Chemical Composition
The chemical composition of high residual phosphorus UNS C12200 is shown in the following table.
|
Element |
Content (%) |
|
Cu |
99.90 |
|
P |
0.02 |
Physical Properties
The following table states the physical properties of high residual phosphorus UNS C12200 copper.
|
Properties |
Metric |
Imperial |
|
Density |
8.94 g/cm³ |
0.323 lb/in3 |
Mechanical Properties
The mechanical properties of high residual phosphorus UNS C12200 copper are given in the following table.
|
Properties |
Metric |
Imperial |
|
Tensile strength, ultimate |
221 - 379 MPa |
32100 - 55000 psi |
|
Tensile strength, yield |
69.0 - 345 MPa |
10000 - 50000 ps |
|
Elongation at break |
45.0 % |
45.0 % |
|
Machinability |
20 % |
20 % |
Other Designations
Equivalent designations to UNS C12200 copper are shown in the following table.
|
ASME B16.22 |
ASTM B111 |
ASTM B370 |
ASTM B623 |
ASTM B88 |
|
ASME B16.29 |
ASTM B133 |
ASTM B379 |
ASTM B638 |
MIL B-18907 |
|
ASME SB111 |
ASTM B152 |
ASTM B395 |
ASTM B640 |
MIL B-20292 |
|
ASME SB133 |
ASTM B224 |
ASTM B42 |
ASTM B641 |
MIL T-22214 |
|
ASME SB152 |
ASTM B272 |
ASTM B432 |
ASTM B68 |
MIL T-24107 |
|
ASME SB359 |
ASTM B280 |
ASTM B442 |
ASTM B687 |
MIL T-3235 |
|
ASME SB395 |
ASTM B302 |
ASTM B447 |
ASTM B698 |
SAE J461 |
|
ASME SB42 |
ASTM B306 |
ASTM B5 |
ASTM B716 |
SAE J463 |
|
ASME SB543 |
ASTM B359 |
ASTM B506 |
ASTM B743 |
UNS C12200 |
|
ASME SB75 |
ASTM B360 |
ASTM B543 |
ASTM B75 |
|
|
|
|
|
|
|
Fabrication and Heat Treatment
Machinability
The machinability rate UNS C12200 copper is 20%.
Welding
The following are the welding methods recommended for UNS C12200:
-
Soldering
-
Brazing
-
Gas shielded arc welding
-
Oxyacetylene welding
-
Butt welding
The following are the welding methods not recommended for UNS C12200
-
Coated metal arc welding
-
Spot welding
-
Seam welding
Forging
Forging of UNS C12200 is performed at hot working temperature ranging from 760 to 871°C (1400 to 1600°F). The hot forgeability rate of this alloy is 65%.
Hot Working
UNS C12200 copper has excellent hot working property.
Cold Working
C12200 copper has excellent cold working property.
Annealing
Annealing of C12200 copper is performed at temperature ranging from 371 to 649°C (700 to 1200°F).
Applications
The following are the major applications of C12200 copper:
-
Electromechanical hardware connectors
-
Bus bars