Nov 13 2012
Topics Covered
IntroductionChemical CompositionPhysical PropertiesMechanical PropertiesOther DesignationsFabrication and Heat Treatment Machinability Welding Forging Hot Working Cold Working Annealing
Introduction
Brass is an alloy mainly consisting of copper and zinc. Brass alloys can be easily shaped and are available in different colors. Brass has high thermal conductivity. UNS C37000 free cutting brass alloys are available in the form of tube, plate, bar and rod.
Chemical Composition
The following table shows the chemical composition of UNS C37000 brass alloys.
| Element |
Content (%) |
| Cu |
60 |
| Pb |
1 |
| Zn |
39 |
Physical Properties
The physical properties of UNS C37000 brass alloys are tabulated below.
| Properties |
Metric |
Imperial |
| Density |
8.4 g/cm³ |
0.304 lb/in³ |
| Melting point |
885°C |
1630°F |
Mechanical Properties
The mechanical properties of UNS C37000 brass alloys are outlined in the following table.
| Properties |
Metric |
Imperial |
| Hardness, Rockwell B |
78 |
78 |
| Tensile strength at break |
359 MPa |
52000 psi |
| Yield strength |
138 MPa |
20000 psi |
| Elongation at break |
45% |
45% |
| Machinability (UNS C36000 = 100) |
70 |
70 |
| Poisson's ratio |
0.34 |
0.34 |
| Elastic modulus |
117 GPa |
17000 ksi |
Other Designations
Other designations that are equivalent to UNS C37000 brass alloys include:
Fabrication and Heat Treatment
Machinability
The machinability rating of UNS C37000 brass alloys is 70.
Welding
UNS C37000 brass alloys can be welded using brazing, soldering, and butt welding methods. Coated metal arc welding, oxyacetylene welding, gas shielded arc welding, seam welding, and spot welding methods are not preferred for these alloys.
Forging
UNS C37000 brass alloys can be forged at temperatures between 622 and 788°C (1150 and 1450°F).
Hot Working
UNS C37000 brass alloys have good hot forming capacity.
Cold Working
UNS C37000 brass alloys have average cold working capacity.
Annealing
UNS C37000 brass alloys can be annealed at temperatures between 427 to 594°C (800 and 1100°F).