Nov 12 2012
Topics Covered
IntroductionChemical CompositionPhysical PropertiesMechanical PropertiesThermal PropertiesOther DesignationsFabrication and Heat Treatment Machinability Welding Forging Hot Working Cold Working AnnealingApplications
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 C36000 free cutting brass alloys have high machinability compared to all copper alloys.
The following datasheet gives an overview of UNS C36000 brass alloys.
Chemical Composition
The following table shows the chemical composition of UNS C36000 brass alloys.
| Element |
Content (%) |
| Cu |
61.5 |
| Pb |
3 |
| Zn |
35.5 |
Physical Properties
The physical properties of UNS C36000 brass alloys are outlined in the following table.
| Properties |
Metric |
Imperial |
| Density |
8.49 g/cm3 |
0.307 lb/in³ |
| Melting point |
885°C |
1630°F |
Mechanical Properties
The mechanical properties of UNS C36000 brass alloys are tabulated below.
| Properties |
Metric |
Imperial |
| Tensile strength |
338-469 MPa |
49000-68000 psi |
| Yield strength (depending on temper) |
124-310 MPa |
18000-45000 psi |
| Elongation at break ( in 457.2 mm) |
53% |
53% |
| Elastic modulus |
117 GPa |
17000 ksi |
| Poisson's ratio |
0.34 |
0.34 |
| Machinability (UNS C36000 (free-cutting brass) = 100) |
100 |
100 |
| Shear modulus |
37 GPa |
5370 ksi |
Thermal Properties
The thermal properties of UNS C36000 brass alloys are given in the following table.
| Properties |
Metric |
Imperial |
| Thermal expansion co-efficient (@ 20-300°C/ 68-572°F) |
20.5 µm/m°C |
11.4 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 C36000 brass alloys include:
- ASTM B16
- SAE J461
- SAE J463
Fabrication and Heat Treatment
Machinability
The machinability rate of UNS C36000 brass alloys is 100.
Welding
UNS C36000 brass alloys can be welded using brazing, soldering, and butt welding methods. It is suggested that gas shielded arc welding, oxyacetylene welding, seam welding, coated metal arc welding, and spot welding methods are not used for welding these alloys.
Forging
UNS C36000 brass alloys are forged at temperatures ranging from 705 to 788°C (1300 to 1450°F).
Hot Working
UNS C36000 brass alloys have average hot forming capacity.
Cold Working
UNS C36000 brass alloys have poor cold working capacity.
Annealing
Annealing of UNS C36000 brass alloys can be done at temperatures ranging from 427 to 594°C (800 to 1100°F).
Applications
UNS C36000 brass alloys are mainly used in screw machine products.