Nov 13 2012
Topics Covered
IntroductionChemical CompositionPhysical PropertiesMechanical PropertiesThermal PropertiesOther DesignationsFabrication and Heat Treatment Annealing Cold Working Welding Forging Machinability Hot WorkingApplications
Introduction
Aluminum bronze alloys are copper alloys containing 5-12% aluminum. Some copper alloys also contain manganese, nickel, silicon and iron. The aluminum bronze alloys have a protective, adherent and hard alumina film that improves the corrosion resistance of these alloys. Aluminum bronze alloys are golden in color and available in both wrought and cast forms.
UNS C63200 nickel aluminum bronze alloy has moderate strength and corrosion resistance. The following datasheet provides an overview of UNS C63200 alloy.
Chemical Composition
The chemical composition of UNS C63200 nickel aluminum bronze alloy is outlined in the following table.
| Element |
Content (%) |
| Cu |
82 |
| Fe |
4 |
| Al |
9 |
| Ni |
5 |
Physical Properties
The following table shows the physical properties of UNS C63200 nickel aluminum bronze alloy.
| Properties |
Metric |
Imperial |
| Density |
7.64 g/cm³ |
0.276 lb/in³ |
| Melting point |
1046°C |
1905°F |
Mechanical Properties
The mechanical properties of UNS C63200 nickel aluminum bronze alloy are displayed in the following table.
| Properties |
Metric |
Imperial |
| Hardness, Rockwell B |
92.0-97.0 |
92.0-97.0 |
| Tensile strength, (depending on amount of cold work or heat treatment) |
640-725 MPa |
92800-105000 psi |
| Yield strength (depending on amount of cold work or heat treatment) |
330-380 MPa |
47900-55100 psi |
| Elongation at break (in 50 mm, 18% reduction in area) |
18% |
18% |
| Compressive strength |
760 MPa |
110000 psi |
| Charpy impact (V-notch) (@ -29-20°C/-20.2-68°F) |
23.0-27.0 J |
17.0-19.9 ft-lb |
| Izod Impact (@ -29-20°C/-20.2-68°F) |
13.0-16.0 J |
9.59-11.8 ft-lb |
| Machinability (based on 100 machinability for UNS C360000) |
30 |
30 |
| Shear modulus |
44 GPa |
6380 ksi |
| Poisson's ratio |
0.34 |
0.34 |
| Elastic modulus |
117 GPa |
16969 ksi |
Thermal Properties
The thermal properties of UNS C63200 nickel aluminum bronze alloy are given in the following table.
| Properties |
Metric |
Imperial |
| Thermal expansion co-efficient (@20-300°C/68-572°F) |
16.2 µm/m°C |
9.00 µin/in°F |
| Thermal conductivity (@20°C/68°F) |
36 W/mK |
250 BTU in/hr.ft².°F |
Other Designations
Equivalent materials to UNS C63200 alloy are:
- ASTM B124
- ASTM B150
- ASTM B283
Fabrication and Heat Treatment
Annealing
UNS C63200 alloy can be annealed between 621 and 704°C (1150 and 1300°F).
Cold Working
UNS C63200 alloy has fair cold working capacity.
Welding
Welding processes suitable for UNS C63200 alloy include brazing, coated metal arc welding, seam welding, soldering, butt welding, spot welding and gas shielded arc welding. Oxyacetylene welding is not recommended for this alloy.
Forging
UNS C63200 alloy can be hot worked between 816 and 899°C (1500 and 1650°F). The hot forgeability rating of this alloy is 70.
Machinability
The machinability rating of UNS C63200 alloy is 30.
Hot Working
UNS C63200 alloy has good hot forming capacity.
Applications
UNS C63200 alloy is used for pole line hardware, high strength fasteners, marine equipment and components such as pumps and valves utilized in industries.