Oct 3 2012
Topics Covered
IntroductionChemical CompositionPhysical PropertiesMechanical PropertiesThermal propertiesOther DesignationsFabrication and Heat Treatment Machinability Welding
Introduction
Bronze – copper casting alloy UNS C90500 is a cast alloy of copper-tin. Bronze is preferred by architects for its attractive lustre and longevity.
The following datasheet provides the chemical composition and properties of UNS C90500 Bronze.
Chemical Composition
The chemical composition of UNS C90500 alloy is given in the following table.
| Element |
Content (%) |
| Cu |
88 |
| Sn |
10 |
| Zn |
2 |
Physical Properties
The following table details the physical properties of UNS C90500 alloy.
| Properties |
Metric |
Imperial |
| Density |
8.72 g/cm3 |
0.315 lb/in³ |
Mechanical Properties
The mechanical properties of UNS C90500 alloy are shown in the following table.
| Properties |
Metric |
Imperial |
| Hardness, Brinell |
75 |
75 |
| Tensile strength |
310 MPa |
45000 psi |
| Yield strength |
150 MPa |
21800 psi |
| Elongation at break |
25.00% |
25.00% |
| Machinability
| 30
| 30 |
| Compressive strength |
275 MPa |
39900 psi |
| Fatigue strength |
90.0 MPa |
13100 psi |
| Izod impact |
14.0 J |
10.3 ft.lb |
| Elastic modulus |
117 GPa |
16969 ksi |
| Poisson's ratio |
0.34 |
0.34 |
Thermal properties
The following table discusses the thermal properties of UNS C90500 alloy.
| Properties |
Metric |
Imperial |
| Thermal expansion co-efficient (@20-300°C/68-572°F) |
20.0 µm/m°C |
11.0 µin/in°F |
| Thermal conductivity(@20.0°C/68°F) |
74.0 W/mK |
514 BTUin/hr.ft².°F |
Other Designations
Equivalent designations to UNS C90500 alloy include:
- AMS 4845
- ASTM B22
- ASTM B271
- ASTM B30
- ASTM B505
- ASTM B584
- ASTM B763
- QQ C390
- SAE J461
- SAE J462
Fabrication and Heat Treatment
Machinability
UNS C90500 alloy has a machinability rating of 30.
Welding
The preferred welding techniques for UNS C90500 alloy are soldering, brazing, carbon arc welding, oxyacetylene welding, gas shielded arc welding and coated metal arc welding.