Aug 20 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
Pure copper has high thermal and electrical conductivity. Nearly 400 different kinds of copper alloys are available. Copper can freely form alloys with many metals. The UNS C61800 copper alloy has high corrosion resistance. It is available in the form of rod.
The following datasheet gives an overview of UNS C61800.
Chemical Composition
The following table shows chemical composition of the UNS C61800 copper alloy.
|
Element |
Content (%) |
|
Cu |
89 |
|
Fe |
1 |
|
Al |
10 |
Physical Properties
The physical properties of the UNS C61800 copper alloy are tabulated below.
|
Properties |
Metric |
Imperial |
|
Density |
7.65 g/cm3 |
0.276 lb/in³ |
|
Melting point |
1042°C |
1904°F |
Mechanical Properties
The mechanical properties of the UNS C61800 copper alloy are outlined in the following table.
|
Properties |
Metric |
Imperial |
|
Tensile strength |
552-586 MPa |
80100-85000 psi |
|
Yield strength (depending on temper) |
269-293 MPa |
39000-42500 psi |
|
Elongation at break (in 50 mm) |
28% |
28% |
|
Machinability (UNS C36000 (free-cutting brass) = 100) |
40 |
40 |
|
Poisson's ratio |
0.34 |
0.34 |
|
Elastic modulus |
117 GPa |
17000 ksi |
Other Designations
Other designations that are equivalent to the UNS C61800 copper alloy include:
-
ASME SFA5.7
-
MIL E-23765/3
-
MIL W-6712
Fabrication and Heat Treatment
Machinability
The machinability rating of the UNS C61800 copper alloy is 40.
Welding
The UNS C61800 copper alloy can be welded using brazing, soldering, butt welding, coated metal arc welding, seam welding, gas shielded arc welding, and spot welding methods. Oxyacetylene welding method is not preferred for this alloy.
Forging
The UNS C61800 copper alloy can be forged at temperatures ranging from 760 to 885°C (1400 to 1625°F). The hot forgeability rating of the UNS C61800 copper alloy is 50.
Hot Working
The UNS C61800 copper alloy has good hot forming capacity.
Cold Working
The UNS C61800 copper alloy has average cold working capacity.
Annealing
The copper alloy UNS C61800 can be annealed at temperatures ranging from 594 to 650°C (1100 to 1200°F).
Applications
The UNS C61800 copper alloy can be primarily used in valve and pump components for industrial process streams, high strength fasteners, marine equipment, and pole line hardware.