Aug 20 2012
Topics Covered
IntroductionChemical CompositionPhysical PropertiesMechanical PropertiesThermal PropertiesOther DesignationsFabrication and Heat Treatment Machinability Welding Forging Hot Working Cold Working AnnealingApplications
Introduction
Aluminium bronze is an alloy consisting of about 6% of nickel and iron and 9 to 12% of aluminium. It has high wear and corrosion resistance, and high strength. The UNS C62300 copper alloy has good corrosion and acid resistance.
The following datasheet provides an overview of the UNS C62300 copper alloy.
Chemical Composition
The chemical composition of the UNS C62300 copper alloy is outlined in the following table.
| Element |
Content (%) |
| Copper, Cu |
82.2-89.5 |
| Aluminium, Al |
8.5-11.0 |
| Iron, Fe |
2.0-4.0 |
| Manganese, Mn |
≤0.6 |
| Tin, Sn |
≤0.5 |
| Silicon, Sn |
≤0.25 |
| Other |
≤0.5 |
Physical Properties
The following table shows physical properties of the UNS C62300 copper alloy.
| Properties |
Metric |
Imperial |
| Density |
7.65 g/cc |
0.276 lb/in³ |
| Melting point |
1041°C |
1905°C |
Mechanical Properties
The mechanical properties of the UNS C62300 copper alloy are tabulated below.
| Properties |
Metric |
Imperial |
| Hardness, Rockwell B |
89 |
89 |
| Tensile strength |
605 MPa |
87700 psi |
| Yield strength |
305 MPa |
44200 psi |
| Elongation at break ( in 50 mm, 15% reduction in area) |
15% |
15% |
| Elastic modulus |
117 GPa |
17000 ksi |
| Poisson’s ratio |
0.34 |
0.34 |
| Charpy impact (V-notch) |
25.0-40.0 J |
18.4-29.5 ft-lb |
| Izod impact |
43.0-47.0 J |
31.7-34.7 ft-lb |
| Fatigue strength (@# of cycles 1.00e+8, reverse bending) |
200 MPa |
29000 psi |
| Machinability (based on 100 machinability for UNS C360000) |
50 |
50 |
| Shear modulus |
44 GPa |
6380 ksi |
Thermal Properties
The thermal properties of the UNS C62300 copper 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) |
54.4 W/mK |
378 BTU in/hr.ft².°F |
Other Designations
Other designations that are equivalent to the UNS C62300 copper alloy include:
- ASME SB150
- ASTM B124
- ASTM B150
- ASTM B283
- MIL B-16166
- SAE J461
- SAE J463
Fabrication and Heat Treatment
Machinability
The machinability rating of the UNS C62300 copper alloy is 50.
Welding
The UNS C62300 copper alloy can be welded using seam welding, gas shielded arc welding, coated metal arc welding, spot welding, brazing, and butt welding methods. Soldering and oxyacetylene welding are not preferred for this alloy.
Forging
The UNS C62300 copper alloy can be forged at temperatures ranging from 705 to 872°C (1300 to 1600°F). The hot forgeability rating of this alloy is 75.
Hot Working
The UNS C62300 copper alloy has good hot forming capacity.
Cold Working
UNS C62300 also has good cold working capacity.
Annealing
The UNS C62300 copper alloy can be annealed at temperatures ranging from 594 to 649°C (1100 to 1200°F).
Applications
UNS C62300 is mainly used in valve and pump components for industrial process streams, high strength fasteners, marine equipment, and pole line hardware.