Sep 18 2012
Topics Covered
IntroductionChemical CompositionPhysical PropertiesMechanical PropertiesThermal PropertiesOther DesignationsFabrication and Heat Treatment Machinability Welding 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 various colors. UNS C33000 low leaded brass alloys have high corrosion resistance and good machinability. They are available in the form of tubes.
The following datasheet gives details about UNS C33000 brass alloys.
Chemical Composition
The following table shows the chemical composition of UNS C33000 brass alloys.
| Element |
Content (%) |
| Cu |
66 |
| Pb |
0.5 |
| Zn |
33.5 |
Physical Properties
The physical properties of UNS C33000 brass alloys are outlined in the following table.
| Properties |
Metric |
Imperial |
| Density |
8.50 g/cm3 |
0.307 lb/in3 |
Mechanical Properties
The mechanical properties of UNS C33000 brass alloys are tabulated below.
| Properties |
Metric |
Imperial |
| Tensile strength |
324 - 517 MPa |
47000 - 75000 psi |
| Yield strength (depending on temper) |
103 - 414 MPa |
14900 - 60000 psi |
| Elongation at break (in 177.8 mm) |
60% |
60% |
| Elastic modulus |
117 GPa |
17000 ksi |
| Poisson’s ratio |
0.34 |
0.34 |
| Machinability (UNS C36000 (free-cutting brass) = 100) |
60 |
60 |
| Shear modulus |
39 GPa |
5660 ksi |
Thermal Properties
The thermal properties of UNS C33000 brass alloys are given below.
| Properties |
Metric |
Imperial |
| Thermal expansion co-efficient (@ 20 - 300°C/68 - 572°F) |
20.2 µm/m°C |
11.2 µin/in°F |
| Thermal conductivity (@ 20°C/68°F) |
115 W/mK |
798 BTU in/hr.ft².°F |
Other Designations
Other designations that are equivalent to UNS C33000 brass alloys include:
- ASTM B135
- MIL T-46072
- SAE J461
- SAE J463
Fabrication and Heat Treatment
Machinability
The machinability rating of UNS C33000 brass alloys is 60.
Welding
UNS C33000 brass alloys can be welded using brazing, soldering, gas shielded arc welding, butt welding, oxyacetylene welding, and spot welding methods. It is suggested that seam welding, and coated metal arc welding are not used for welding these alloys.
Hot Working
UNS C33000 brass alloys have poor hot forming capacity.
Cold Working
UNS C33000 brass alloys have good cold working capacity.
Annealing
UNS C33000 brass alloys can be annealed at temperatures ranging from 427 to 649°C (800 to 1200°F).