Sep 18 2012
Topics Covered
IntroductionChemical CompositionPhysical PropertiesMechanical PropertiesFabrication and Heat Treatment Machinability Welding
Introduction
Copper casting alloy UNS C90200 is a cast bronze alloy of copper and zinc. Bronzes are preferred in architecture for their color and lustre. Bronzes last longer than many alloys.
The following datasheet provides chemical composition and properties of UNS C90200 alloy.
Chemical Composition
The chemical composition of UNS C90200 alloy is given in the following table.
Element |
Content (%) |
Cu |
93 |
Sn |
7 |
Physical Properties
The following table details the physical properties of UNS C90200 alloy.
Properties |
Metric |
Imperial |
Density |
8.80 g/cm3 |
0.318 lb/in³ |
Mechanical Properties
The mechanical properties of UNS C90200 alloy are shown in the following table.
Properties |
Metric |
Imperial |
Elastic modulus |
117 GPa |
16969 ksi |
Poisson's ratio |
0.34 |
0.34 |
Hardness, Brinell |
70 |
70 |
Tensile strength |
262 MPa |
38000 psi |
Yield strength |
110 MPa |
16000 psi |
Elongation at break |
30.00% |
30.00% |
Machinability |
20 |
20 |
Fabrication and Heat Treatment
Machinability
UNS C90200 alloy has a machinability rating of 20.
Welding
The preferred welding techniques for UNS C90200 alloy are soldering, oxyacetylene welding, brazing, carbon arc welding, gas shielded arc welding and coated metal arc welding.