Jul 11 2013
Topics Covered
Introduction
Composition
Physical Properties
Mechanical Properties
Other Designations
Fabrication
Welding
Heat Treatment
Introduction
Nearly 400 different kinds of copper alloys have been designed to match specific environments and applications.
The following datasheet gives an overview of UNS C99750 copper casting alloy.
Composition
The chemical composition of UNS C99750 copper alloy is tabulated below.
|
Element |
Content (%) |
|
Copper, Cu |
58 |
|
Manganese, Mn |
20 |
|
Zinc, Zn |
20 |
|
Lead, Pb |
1 |
|
Aluminum, Al |
1 |
Physical Properties
The following table shows physical properties of UNS C99750 copper alloy.
|
Properties |
Metric |
Imperial |
|
Density |
8.00 g/cm3 |
0.289 lb/in3 |
Mechanical Properties
The mechanical properties of UNS C99750 copper alloy are outlined in the following table.
|
Properties |
Metric |
Imperial |
|
Tensile strength |
448 MPa |
65000 psi |
|
Tensile strength (heat treated) |
517 MPa |
75000 psi |
|
Yield strength (@ 0.2%) |
220 MPa |
31900 psi |
|
Poisson's ratio |
0.34 |
0.34 |
|
Elongation at break (in 50 mm) |
30% |
30% |
|
Modulus of elasticity |
117 GPa |
17000 ksi |
|
Charpy impact ( V-notch) |
100 J |
73.8 ft-lb |
|
Hardness, Brinell (500 kg) |
110 |
110 |
|
Hardness, Rockwell B |
77 |
77 |
Other Designations
Other designations that are equivalent to UNS C99750 copper alloy include:
Fabrication
Welding
UNS C99750 copper alloy can be welded using brazing, soldering, and gas shielded arc welding techniques. Oxyacetylene welding, coated metal arc welding, and carbon arc welding methods are not used for welding this alloy.
Heat Treatment
UNS C99750 copper alloy can be stress relieved at a temperature of about 260°C (500°F). The time taken for stress relieving is 1 h/in. of section thickness. It does not respond to heat treatment.