Aluminum Brass (UNS C68700)
Aluminum brass C68700 is a type of brass alloy that contains aluminum as its primary alloying element. It belongs to the brass family, which is a group of copper-based alloys known for their excellent corrosion resistance, good formability, and attractive appearance.
| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Copper | 76.0% | 79.0% |
| Aluminum | 1.8% | 2.5% |
| Arsenic | 0.02% | 0.06% |
| Iron | —— | 0.06% |
| Lead | —— | 0.07% |
| Zinc | —— | Remainder |
The following table provides a list of aluminum brass C68700 properties in both SI and US customary/Imperial units.
Click on the icon to switch between Metric and Imperial units.
| Physical Properties | Metric |
|---|---|
| Density | 8330 kg/m3 |
| Mechanical Properties | Metric |
| Tensile Strength | 410 MPa |
| Yield Strength | 180 MPa |
| Young’s Modulus (E) | 110 GPa |
| Shear Modulus (G) | 51 GPa |
| Elongation at Break | 55% |
| Poisson’s Ratio (ν) | 0.32 |
| Thermal Properties | Metric |
| Melting Point | 930 - 970 °C |
| Thermal Conductivity | 100 W/m·K |
| Specific Heat Capacity (Cp) | 377 J/kg·K |
| Coefficient of Thermal Expansion (αL) | 1.85×10-5 1/°C |
| Electrical Properties | Metric |
| Electrical Conductivity | 1.33×107 S/m |
| Electrical Resistivity | 7.5×10-8 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 Aluminum Brass C68700
| Advantages | Disadvantages |
|---|---|
| Excellent Corrosion Resistance | High Cost |
| High Thermal Conductivity | Limited Availability |
| Good Formability |
Applications of Aluminum Brass C68700
Aluminum Brass C68700 is utilized in various applications due to its favorable properties. Here are some common applications where Aluminum Brass C68700 is often used:
- Heat exchangers: Aluminum Brass C68700’s high thermal conductivity and corrosion resistance make it well-suited for heat exchangers. It is commonly employed in both industrial and marine heat exchanger systems.
- Condenser tubes: Due to its resistance to dezincification and corrosion, Aluminum Brass C68700 is frequently used in condenser tubes for power plants, desalination plants, and other applications involving heat transfer.
- Plumbing fittings: The corrosion resistance of Aluminum Brass C68700 makes it suitable for plumbing fittings, valves, and components exposed to water and other corrosive substances.
- Marine hardware: Aluminum Brass C68700’s corrosion resistance and durability make it a popular choice for marine hardware applications such as fittings, valves, propeller shafts, and other components that are exposed to seawater.
- Architectural applications: Aluminum Brass C68700’s attractive appearance, combined with its corrosion resistance, makes it ideal for architectural applications. It is commonly used for handrails, decorative elements, ornamental structures, and other similar purposes.
- Tube and pipe fittings: Aluminum Brass C68700 is employed in the manufacturing of tube and pipe fittings that require good corrosion resistance and formability.