Aug 20 2012
Topics Covered
IntroductionChemical CompositionPhysical PropertiesMechanical PropertiesThermal propertiesOther DesignationsFabrication and Heat Treatment Machinability Welding Forging Hot Working Cold Working AnnealingApplications
Introduction
The aluminium bronze- copper alloy UNS C61300 has excellent formability. The alumina film present in UNS C61300 offers strength and corrosion resistance.
The following datasheet provides chemical composition and properties of UNS C61300 copper alloy.
Chemical Composition
The chemical composition of UNS C61300 is given in the following table.
| Element |
Content (%) |
| Copper, Cu |
88.5-91.5 |
| Aluminium, Al |
6.0-7.5 |
| Iron, Fe |
2.0-3.0 |
| Tin, Sn |
0.02-0.05 |
| Manganese, Mn |
≤0.1 |
| Zinc, Zn |
≤0.05 |
| Lead, Pb |
≤0.01 |
| Other |
≤0.05 |
Physical Properties
The following table details the physical properties of UNS C61300.
| Properties |
Metric |
Imperial |
| Density |
7.89 g/cc |
0.285 lb/in³ |
| Melting point |
1040°C |
1905°F |
Mechanical Properties
The mechanical properties of UNS C61300 copper alloy are shown in the following table.
| Properties |
Metric |
Imperial |
| Tensile strength |
540 MPa |
78300 psi |
| Yield strength |
240 MPa |
34800 psi |
| Elongation at break |
35.00% |
35.00% |
| Reduction of area |
25.00% |
25.00% |
| Izod impact |
54.0 - 66.0 J |
39.8 - 48.7 ftlb |
| Fatigue strength |
180 MPa |
26100 psi |
| Shear modulus |
44.0 GPa |
6380 ksi |
| Elastic modulus |
117 GPa |
16969 ksi |
| Poisson's ratio |
0.34 |
0.34 |
Thermal properties
The following table discusses the thermal properties of UNS C61300.
| 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) |
56.5 W/mK |
392 BTUin/hr.ft².°F |
Other Designations
Equivalent designations to UNS C61300 copper alloy include:
- ASTM B111
- ASTM B150
- ASTM B169
- ASTM B171
- ASTM B315
- ASTM B432
- ASTM B608
- ASTM F467
- ASTM F468
- QQ C450
- UNS C61300
Fabrication and Heat Treatment
Machinability
UNS C61300 copper alloy has a machinability rating of 30.
Welding
The preferred welding techniques for copper alloy UNS C61300 are brazing, gas shielded arc welding, coated metal arc welding, spot welding, seam welding and butt welding. Soldering and oxyacetylene welding are not recommended for this alloy.
Forging
UNS C61300 has a forgeability rating of 50.
Hot Working
Aluminium bronze UNS C61300 has good hot working properties.
Cold Working
UNS C61300 has good cold working characteristics.
Annealing
UNS C61300 can be annealed at temperatures ranging between 606 and 871°C (1125 and 1600°F.
Applications
The applications of UNS C61300 include:
- Valve and pump components for industrial process streams
- Marine equipment
- High strength fasteners
- Pole line hardware