Sep 27 2012
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Other Designations
Fabrication 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 by most metals.
The following datasheet gives an overview of UNS C91300 copper alloy.
Chemical Composition
The chemical composition of the C91300 copper alloy is tabulated
below.
| Element |
Content
(%) |
| Copper, Cu |
81 |
| Tin, Sn |
19 |
Physical Properties
The following table shows physical properties of UNS C91300 copper
alloy.
| Properties |
Metric |
Imperial |
| Density |
8.64 g/cm3 |
0.312 lb/in3 |
Mechanical Properties
The mechanical properties of UNS C91300 copper alloy are outlined in
the following table.
| Properties |
Metric |
Imperial |
| Hardness, Brinell (3000 kg) |
170 |
170 |
| Tensile strength (as cast) |
241 MPa |
35000 psi |
| Yield strength (as cast) |
207 MPa |
30000 psi |
| Elongation at break (heat treated) |
0.50% |
0.50% |
| Machinability (UNS C36000
(free-cutting brass) = 100) |
10 |
10 |
| Poisson's ratio |
0.34 |
0.34 |
| Elastic modulus |
117 GPa |
17000 ksi |
Other Designations
Other designations that are equivalent to the UNS C91300 copper
alloy include:
- ASTM B22
- ASTM B30
- ASTM B505
- QQ C390
Fabrication and Heat Treatment
Machinability
The machinability rating of UNS C91300 copper alloy is 10.
Welding
UNS C91300 copper alloy can be welded using brazing, soldering,
carbon arc welding, oxyacetylene welding, coated metal arc welding, and
gas shielded arc welding techniques.
Heat Treatment
UNS C91300 copper alloy can be stress relieved at the temperature of
260°C (500°F). The time taken for stress relieving is 1 hr/ in. of
section thickness. It does not respond to heat treatment.