Sep 13 2012
Topics Covered
IntroductionChemical CompositionPhysical PropertiesMechanical PropertiesOther DesignationsFabrication and Heat Treatment Machinability Welding Heat Treatment
Introduction
Pure copper has good electrical and thermal conductivity. More than 400 varieties of copper alloys are available. Alloys can be freely formed by copper than most metals.
The datasheet given below provides an overview of UNS C91600 copper alloy.
Chemical Composition
The following table shows chemical composition of UNS C91600 copper alloy.
| Element |
Content (%) |
| Cu |
88 |
| Sn |
10.5 |
| Ni |
1.5 |
Physical Properties
The physical properties of UNS C91600 copper alloy are tabulated below.
| Properties |
Metric |
Imperial |
| Density |
8.78 g/ cm3 |
0.317 lb/in³ |
Mechanical Properties
The mechanical properties of UNS C91600 copper alloy are outlined in the following table.
| Properties |
Metric |
Imperial |
| Hardness, Brinell (as cast, 500kg) |
85 |
85 |
| Hardness, Brinell (heat treated, 500kg) |
106 |
106 |
| Tensile strength ( as cast) |
303 MPa |
43900 psi |
| Tensile strength (heat treated) |
414 MPa |
60000 psi |
| Yield strength (as cast) |
152 MPa |
22000 psi |
| Elongation at break (heat treated) |
16% |
16% |
| Machinability (UNS C36000 (free-cutting brass) = 100) |
20 |
20 |
| Poisson's ratio |
0.34 |
0.34 |
| Elastic modulus |
117 GPa |
17000 ksi |
Other Designations
Other designations that are equivalent to UNS C91600 copper alloy include:
- ASTM B30
- ASTM B427
- QQ C390
Fabrication and Heat Treatment
Machinability
The machinability rating of UNS C91600 copper alloy is 20.
Welding
UNS C91600 copper alloy can be welded using brazing, soldering, carbon arc welding, coated metal arc welding, oxyacetylene welding, and gas shielded arc welding methods.
Heat Treatment
UNS C91600 copper alloy can be stress relieved at 260°C (500°F). The time taken for stress relieving is about 1 hr/in. of section thickness. It does not respond to heat treatment.