Sep 20 2012
Topics Covered
IntroductionChemical CompositionPhysical PropertiesMechanical PropertiesThermal PropertiesOther DesignationsFabrication and Heat Treatment Machinability Welding 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 various colors. UNS C35300 high leaded brass alloys have free machining properties and low formability. They are available as rod and flat products.
The following datasheet gives details about UNS C35300 brass alloys.
Chemical Composition
The chemical composition of UNS C35300 brass alloys is outlined in the following table.
| Element |
Content (%) |
| Cu |
62 |
| Pb |
1.8 |
| Zn |
36.2 |
Physical Properties
The following table shows physical properties of UNS C35300 brass alloys.
| Properties |
Metric |
Imperial |
| Density |
8.50 g/cm3 |
0.307 lb/in³ |
| Melting point |
885°C |
1630°F |
Mechanical Properties
The mechanical properties of UNS C35300 brass alloys are tabulated below.
| Properties |
Metric |
Imperial |
| Tensile strength |
338-586 MPa |
49000-85000 psi |
| Yield strength (depending on temper) |
117-427 MPa |
17000-61900 psi |
| Elongation at break ( in 127 mm) |
52% |
52% |
| Modulus of elasticity |
117 GPa |
17000 ksi |
| Poisson’s ratio |
0.34 |
0.34 |
| Machinability (UNS C36000 (free-cutting brass) = 100) |
90 |
90 |
| Shear modulus |
39 GPa |
5660 ksi |
Thermal Properties
The thermal properties of UNS C35300 brass alloys are given in the following table.
| Properties |
Metric |
Imperial |
| Thermal expansion co-efficient (@ 20-300°C/68-572°F ) |
20.3 µm/m°C |
11.3 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 C35300 brass alloys include:
Fabrication and Heat Treatment
Machinability
The machinability rate of UNS C35300 brass alloys is 90.
Welding
Brazing, soldering, and butt welding are most commonly used methods for welding the UNS C35300 brass alloys. Seam welding, gas shielded arc welding, oxyacetylene welding, coated metal arc welding, and spot welding methods are not used for welding these alloys.
Hot Working
UNS C35300 brass alloys have poor hot forming capacity.
Cold Working
UNS C35300 brass alloys have average cold working capacity.
Annealing
Annealing of UNS C35300 brass alloys can be performed at temperatures ranging from 427 to 594°C (800 to 1100°F).
Applications
UNS C35300 brass alloys are used in screw machine products for peening, thread rolling, crimping, and knurling purposes. They are also used in the following applications:
- Watch
- Hose fittings
- Bicycle spoke nipples
- Clock and lock parts
- Plumbing valve components