Cartridge Brass (UNS C26000)
Cartridge brass C26000 is a type of brass alloy that is commonly used in the manufacturing of cartridges for ammunition. It is also known as 70/30 brass due to its composition, which typically contains 70% copper and 30% zinc.
| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Copper | 68.5% | 71.5% |
| Iron | —— | 0.05% |
| Lead | —— | 0.07% |
| Zinc | 28.5% | 31.5 |
| Residuals | —— | 0.15% |
The following table provides a list of cartridge brass C26000 properties in both SI and US customary/Imperial units.
Click on the icon to switch between Metric and Imperial units.
| Physical Properties | Metric |
|---|---|
| Density | 8530 kg/m3 |
| Mechanical Properties | Metric |
| Tensile Strength (Ultimate) | 300 - 890 MPa |
| Tensile Strength (Yield) | 70 - 450 MPa |
| Shear Strength | 220 - 390 MPa |
| Young’s Modulus (E) | 110 GPa |
| Shear Modulus (G) | 40 GPa |
| Elongation at Break | 66% |
| Poisson’s Ratio (ν) | 0.34 |
| Thermal Properties | Metric |
| Melting Point | 915 - 955 °C |
| Thermal Conductivity | 120 W/m·K |
| Specific Heat Capacity (Cp) | 390 J/kg·K |
| Coefficient of Thermal Expansion (αL) | 2.0×10-5 1/°C |
| Electrical Properties | Metric |
| Electrical Conductivity | 1.6×107 S/m |
The values in this table are approximate and can vary depending on various factors such as the specific manufacturing process and heat treatment applied to the alloy.
Advantages & Disadvantages of Cartridge Brass C26000
| Advantages | Disadvantages |
|---|---|
| Good Strength | Limited Suitability for Some Corrosive Environments |
| High Ductility | High Cost |
| Good Electrical Conductivity | |
| Good Corrosion Resistance | |
| Excellent Machinability |
Applications of Cartridge Brass C26000
Cartridge brass C26000, with its desirable properties, finds applications in various industries. Some of the common applications of Cartridge Brass C26000 include:
- Ammunition Casings: Cartridge brass C26000 is primarily used for manufacturing ammunition casings due to its strength, ductility, and corrosion resistance. It can withstand the high pressures generated during firing, ensuring the integrity and safety of the ammunition.
- Plumbing Fittings: The excellent machinability and corrosion resistance of C26000 brass make it suitable for plumbing fittings, including valves, couplings, connectors, and fittings. It is used in both residential and commercial plumbing systems.
- Architectural Hardware: Cartridge brass C26000’s attractive yellow color and corrosion resistance make it a popular choice for architectural hardware. It is used in door handles, hinges, knobs, decorative accents, and other fittings where aesthetics and durability are important.
- Electrical Connectors and Terminals: Cartridge brass C26000’s good electrical conductivity makes it suitable for electrical connectors, terminals, and contact elements. It ensures efficient electrical transfer and reliable connections in various applications.
- Automotive Applications: C26000 brass may be used in automotive components such as radiator cores, fuel tanks, heat exchangers, and connectors due to its corrosion resistance, formability, and thermal conductivity.
- Marine Applications: The corrosion resistance of cartridge brass C26000 makes it suitable for marine environments. It can be used in marine fittings, valves, connectors, and other components subject to exposure to saltwater.