Jul 16 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Other Designations
Fabrication and Heat Treatment
Machinability
Welding
Heat Treatment
Applications
Introduction
There are 400 different kinds of copper alloys available. It is possible to freely form alloys with copper more easily than with most metals. The commonly used alloying elements include zinc, tin, manganese, lead, and silicon.
The following datasheet gives an overview of UNS C94400 copper casting alloy.
Chemical Composition
The following table shows the chemical composition of UNS C94400 copper alloy.
|
Element |
Content (%) |
|
Copper, Cu |
81 |
|
Lead, Pb |
11 |
|
Tin, Sn |
8 |
Physical Properties
The physical properties of UNS C94400 copper alloy are tabulated below.
|
Properties |
Metric |
Imperial |
|
Density |
9.08 g/cm3 |
0.328 lb/in3 |
Mechanical Properties
The mechanical properties of UNS C94400 copper alloy are outlined in the following table.
|
Properties |
Metric |
Imperial |
|
Tensile strength (as cast) |
221 MPa |
32100 psi |
|
Yield strength (as cast) |
110 MPa |
16000 psi |
|
Elastic modulus |
117 GPa |
17000 ksi |
|
Poisson's ratio |
0.34 |
0.34 |
|
Elongation at break (as cast) |
18% |
18% |
|
Hardness, Brinell (500 kg) |
55 |
55 |
|
Machinability (UNS C36000 (free-cutting brass) = 100) |
80 |
80 |
Other Designations
Other designations that are equivalent to UNS C94400 copper alloy include:
Fabrication and Heat Treatment
Machinability
The machinability rate of UNS C94400 copper alloy is 80.
Welding
UNS C94400 copper alloy can be welded using brazing and soldering processes. Carbon arc welding, oxyacetylene welding, coated metal arc welding, and gas shielded arc welding techniques are not used for welding this alloy.
Heat Treatment
UNS C94400 copper alloy can be stress relieved at 260°C (500°F). The time taken for stress relieving is 1 hr/ in. of section thickness. It does not respond to heat treatment.
Applications
UNS C94400 copper alloy can be used in bearings and bushings.