Sep 20 2012
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Other Designations
Fabrication and Heat Treatment
Welding
Machinability
Heat Treatment
Introduction
There are over 400 varieties of Copper alloy. UNS C83400 alloy is a Red Brass cast copper alloy.
It's comprised of 90% Copper (Cu) and 10% Zinc (Zn) and is excellent for soldering and brazing.
The following datasheet provides an overview of UNS C83400 alloy.
Chemical Composition
The chemical composition of UNS C83400 copper casting alloy is outlined in the following table.
| Element |
Content (%) |
| Cu |
90 |
| Zn |
10 |
Physical Properties
The following table shows the physical properties of tUNS C83400 copper casting alloy.
| Properties |
Metric |
Imperial |
| Density |
8.77 g/cm3 |
0.317 lb/in³ |
Mechanical Properties
The mechanical properties of UNS C83400 copper casting alloy is displayed in the following table.
| Properties |
Metric |
Imperial |
| Hardness, Rockwell F |
50 |
50 |
| Tensile strength (as cast) |
241 MPa |
35000 psi |
| Yield strength (as cast) |
69 MPa |
10000 psi |
| Elongation at break (as cast) |
30% |
30% |
| Machinability (UNS C36000 (free-cutting brass) = 100) |
60 |
60 |
| Poisson's ratio |
0.34 |
0.34 |
| Elastic modulus |
117 GPa |
16969 ksi |
Other Designations
Equivalent materials to UNS C83400 copper casting alloy are MIL B-46066 alloys.
Fabrication and Heat Treatment
Welding
Welding processes suitable for UNS C83400 alloy include oxyacetylene welding, soldering, gas shielded arc welding and brazing. Coated metal arc welding and carbon arc welding are not recommended for this alloy.
Machinability
The machinability rating of UNS C83400 alloy is 60.
Heat Treatment
UNS C83400 alloy has stress relieving temperature of 260°C (500°F). This alloy does not react to heat treatment. The time at temperature for this alloy is one hour per inch of section thickness.