Aug 6 2012
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Fabrication and Heat Treatment
Annealing
Cold Working
Welding
Forging
Hot Working
Applications
Introduction
Brass is a specific term that refers to a wide range of copper-zinc alloys having, good electrical and thermal conductivity, strength, hardness, wear- resistance, ductility, and corrosion-resistance.
Brasses are available in a wide range of colors such as yellow, red, silver and gold etc. These colored brasses are used by designers and architects to improve the inside and outside appearances of buildings.
UNS C26000 cartridge brass alloys in the yellow brass series have the highest ductility. These alloys are mostly cold formed and they can also be easily machined.
The datasheet given below provides an overview of UNS C26000 cartridge brass alloys.
Chemical Composition
The chemical composition of UNS C26000 cartridge brass alloys is outlined in the following table.
|
Element |
Content (%) |
|
Cu |
68.5-71.5 |
|
Fe |
0.050 |
|
Pb |
0.070 |
|
Other |
0.15 |
|
Zn |
28.5 |
Physical Properties
The following table shows the physical properties of UNS C26000 cartridge brass alloys.
|
Properties |
Metric |
Imperial |
|
Melting point-liquidus |
954°C |
1750°F |
|
Melting point-solidus |
916°C |
1680°F |
|
Density (@20°C/68°F) |
8.53 gm/cm3 |
0.308 lb/in3 |
Mechanical Properties
The mechanical properties of UNS C26000 cartridge brass alloys are displayed in the following table.
|
Properties |
Metric |
Imperial |
|
Tensile strength (depending on temper) |
303-896 MPa |
44-130 ksi |
|
Yield strength (depending on temper) |
76-448 MPa |
11-65 ksi |
|
Elongation (75mm/3in) |
66% |
66% |
|
Poisson's ratio |
0.34 |
0.34 |
|
Elastic modulus |
117 GP |
16969 ksi |
Thermal Properties
The thermal properties of UNS C26000 cartridge brass alloys are given in the following table.
|
Properties |
Metric |
Imperial |
|
Thermal expansion co-efficient (@temperature 20-300°C/68-572°F) |
19.9 μm/m°C |
11.1 μin/in°F |
|
Thermal conductivity (@temperature 20°C/68°F) |
120 W/mK |
833 BTU in/hr.ft².°F |
Other Designations
Equivalent materials to UNS C26000 cartridge brass alloys are given in the table below.
|
ASTM B129 |
ASTM B134 |
ASTM B135 |
ASTM B19 |
|
ASTM B36 |
ASTM B569 |
ASTM B587 |
MIL C-10375 |
|
MIL S-22499 |
MIL T-20219 |
SAE J461 |
SAE J463 |
Fabrication and Heat Treatment
Annealing
UNS C26000 cartridge brass alloys are annealed between 427 and 760°C (800 and 1400°F).
Cold Working
UNS C26000 brass alloys have good cold working properties.
Welding
The welding processes recommended for UNS C26000 brass alloys include oxyacetylene welding, soldering, gas shielded arc welding, brazing, butt welding and spot welding. Seam welding and coated metal arc welding are not recommended for these alloys.
Forging
UNS C26000 brass alloys are forged between 732 and 843°C (1350 and 1550°F).
Hot Working
UNS C26000 brass alloys have fair hot forming capacity.
Applications
UNS C26000 brass alloys are mainly used for cold or hot-formed products.