Sep 18 2012
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Other Designations
Fabrication and Heat Treatment
Annealing
Cold Working
Welding
Forging
Machinability
Hot Forming
Applications
Introduction
There are over 400 varieties of Copper alloy.
UNS C67400 copper alloy is a hot forgeable alloy with good corrosion resistance and high strength. Applications include heavy duty mechanical components including bearings, valve stems and pump components.
The datasheet below provides an overview of UNS C67400 copper alloy.
Chemical Composition
The chemical composition of UNS C67400 copper alloy is outlined in the following table.
| Element |
Content (%) |
| Cu |
58.5 |
| Zn |
36.5 |
| Al |
1.2 |
| Mn |
2.8 |
| Sn |
1 |
Physical Properties
The following table shows the physical properties of UNS C67400 copper alloy.
| Properties |
Metric |
Imperial |
| Density |
8.63 g/cm3 |
0.312 lb/in³ |
| Melting point |
866°C |
1590°F |
Mechanical Properties
The mechanical properties of UNS C67400 copper alloy are displayed in the following table.
| Properties |
Metric |
Imperial |
| Tensile strength |
483-634 MPa |
70100-92000 psi |
| Yield strength (depending on temper) |
234-379 MPa |
33900-55000 psi |
| Elongation at break |
28% |
28% |
| Machinability (UNS C36000 (free-cutting brass) = 100) |
25 |
25 |
| Poisson's ratio |
0.34 |
0.34 |
| Elastic modulus |
117 GPa |
16969 ksi |
Other Designations
Equivalent materials to UNS C67400 copper alloy are:
Fabrication and Heat Treatment
Annealing
UNS C67400 copper alloy is annealed between 427 and 593°C (800 and 1100°F).
Cold Working
UNS C67400 copper alloy has poor cold working capacity.
Welding
Welding processes suitable for UNS C67400 copper alloy include brazing, gas shielded arc welding, butt welding, spot welding, soldering and seam welding. Coated metal arc welding and oxyacetylene welding are not recommended for this alloy.
Forging
UNS C67400 copper alloy is forged between 593 and 677°C (1100 and 1250°F). The hot forgeability rating of this alloy is 100.
Machinability
The machinability rating of UNS C67400 copper alloy is 25.
Hot Forming
UNS C67400 copper alloy has excellent hot forming capacity.
Applications
UNS C67400 copper alloy can be used for pump components, heavy-duty mechanical components, valve stems and bearings.