Yellow Brass (UNS C27400)
Yellow Brass C27400, also known as Alloy 274, is a type of brass alloy composed of mainly of copper and zinc. It belongs to the alpha-beta brass family and is commonly used in the manufacturing of cartridge cases, plumbing fittings, and various decorative items.
| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Copper | 61.0% | 64.0% |
| Iron | —— | 0.05% |
| Lead | —— | 0.09% |
| Zinc | Remainder | |
The following table provides a list of yellow brass C27400 properties in both SI and US customary/Imperial units.
Click on the icon to switch between Metric and Imperial units.
| Physical Properties | Metric |
|---|---|
| Density | 8440 kg/m3 |
| Mechanical Properties | Metric |
| Tensile Strength (Ultimate) | 370 - 650 MPa |
| Young’s Modulus (E) | 105 GPa |
| Shear Modulus (G) | 40 GPa |
| Poisson’s Ratio (ν) | 0.31 |
| Thermal Properties | Metric |
| Thermal Conductivity | 120 W/m·K |
| Specific Heat Capacity (Cp) | 377 J/kg·K |
| Coefficient of Thermal Expansion (αL) | 2.05×10-5 1/°C |
| Electrical Properties | Metric |
| Electrical Conductivity | 1.6×107 S/m |
| Electrical Resistivity | 6.25×10-8 Ω·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 Yellow Brass C27400
| Advantages | Disadvantages |
|---|---|
| Excellent Corrosion Resistance | Lower Strength Compared to Some Other Alloys |
| High Ductility | Limited Heat Resistance |
| Good Machinability | Susceptible to Dezincification |
Applications of Yellow Brass C27400
Yellow Brass C27400 finds application in various industries and sectors due to its favorable properties. Some common applications of Yellow Brass C27400 include:
- Plumbing fittings: Yellow Brass C27400 is widely used for plumbing fittings such as valves, connectors, faucets, and pipe fittings. Its corrosion resistance, machinability, and ease of fabrication make it a suitable choice for plumbing systems.
- Cartridge cases: The alloy’s name, Cartridge Brass, indicates its primary application in the production of cartridge cases for ammunition. Its combination of strength, ductility, and corrosion resistance makes it ideal for this purpose.
- Electrical connectors: Yellow Brass C27400 is utilized in electrical connectors, terminals, and contacts due to its good electrical conductivity. Its machinability also makes it suitable for manufacturing precision electrical components.
- Heat exchanger tubes: Yellow Brass C27400 is utilized in the production of heat exchanger tubes due to its good thermal conductivity and corrosion resistance. It is commonly found in applications such as air conditioning and refrigeration systems.
- Automotive components: Yellow Brass C27400 is used for various automotive components, including radiator cores, heater cores, and fittings. Its corrosion resistance and ability to withstand high temperatures in engine cooling systems make it suitable for these applications.
- Marine applications: The corrosion resistance of Yellow Brass C27400 makes it suitable for marine environments. It is used for fittings, valves, and other components in marine plumbing systems, as well as for decorative elements on boats and yachts.