Sep 19 2012
Topics Covered
IntroductionChemical CompositionPhysical PropertiesMechanical PropertiesOther DesignationsFabrication and Heat Treatment Annealing Cold Working Welding Forging Machinability Hot WorkingApplications
Introduction
UNS C12100 copper alloys have improved embrittlement resistance during the welding process due to deoxidization.
The datasheet below highlights the chemical composition, physical and mechanical properties, other designations, fabrication and heat treatment and applications of UNS C12100 copper alloys.
Chemical Composition
The chemical composition of UNS C12100 copper alloys is outlined in the following table.
| Element |
Content (%) |
| Cu |
99.9 |
| P |
0.008 |
| Ag |
0.0125 |
Physical Properties
The following table shows the physical properties of UNS C12100 copper alloys.
| Properties |
Metric |
Imperial |
| Density |
8.89 g/cm3 |
0.321 lb/inÂ3 |
Mechanical Properties
The mechanical properties of UNS C12100 copper alloys are displayed in the following table.
| Properties |
Metric |
Imperial |
| Tensile strength, ultimate |
221-393 MPa |
32100-57000 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% |
| Machinability (UNS C36000 (free-cutting brass) = 100%) |
20% |
20% |
| Poisson's ratio |
0.34 |
0.34 |
| Elastic modulus |
117 GPa |
16969 ksi |
Other Designations
Equivalent materials to UNS C12100 copper alloys are:
- ASTM B224
- MIL B-20292
- QQ B650
- UNS C12100
Fabrication and Heat Treatment
Annealing
UNS C12100 copper alloys are annealed between 371 and 649°C (700 and 1200°F).
Cold Working
UNS C12100 copper alloys have excellent annealing capacity.
Welding
UNS C12100 copper alloys are capable of being oxyacetylene welded, butt welded, gas shielded arc welded, brazed and soldered. Welding processes not recommended for these alloys include seam welding, coated metal arc welding and spot welding.
Forging
Temperatures between 760 and 871°C (1400 and 1600°F) are best suited for the UNS C12100 copper alloys whose hot forgeability rating is 65%.
Machinability
UNS C12100 copper alloys have a machinability rating of 20%.
Hot Working
UNS C12100 copper alloys have an excellent hot forming capacity.
Applications
UNS C12100 copper alloys are used for components with welding requirements. Some of these components include bus bars, electromechanical hardware connectors etc.