Architectural Bronze (UNS C38500)
Architectural bronze C38500 is a type of brass alloy that offers good mechanical properties, such as high strength and excellent formability. It is composed primarily of copper with a significant amount of zinc and a small percentage of lead.
| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Copper | 55.0% | 59.0% |
| Iron | —— | 0.35% |
| Lead | 2.5% | 3.5% |
| Zinc | Remainder | |
The following table provides a list of bronze C38500 properties in both SI and US customary/Imperial units.
Click on the icon to switch between Metric and Imperial units.
| Physical Properties | Metric |
|---|---|
| Density | 8470 kg/m3 |
| Mechanical Properties | Metric |
| Tensile Strength (Ultimate) | 415 MPa |
| Tensile Strength (Yield) | 140 MPa |
| Shear Strength | 240 MPa |
| Young’s Modulus (E) | 97 GPa |
| Shear Modulus (G) | 37 GPa |
| Elongation at Break | 30% |
| Poisson’s Ratio (ν) | 0.31 |
| Thermal Properties | Metric |
| Melting Point | 875 - 890 °C |
| Thermal Conductivity | 123 W/m·K |
| Specific Heat Capacity (Cp) | 380 J/kg·K |
| Coefficient of Thermal Expansion (αL) | 2.09×10-5 1/°C |
| Electrical Properties | Metric |
| Electrical Conductivity | 1.62×107 S/m |
| Electrical Resistivity | 6.2×10-8 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 Architectural Bronze C38500
| Advantages | Disadvantages |
|---|---|
| Excellent Formability | Lead Content |
| Good Corrosion Resistance | Limited Availability |
| High Strength | Vulnerable to Dezincification |
| Enhanced Machinability |
Applications of Architectural Bronze C38500
Architectural Bronze C38500, also known as C385 brass, finds application in various architectural and decorative projects. Here are some common applications:
- Decorative hardware: C38500 is often used for decorative hardware such as door handles, knobs, hinges, and decorative fittings. Its attractive golden color and corrosion resistance make it suitable for enhancing the aesthetic appeal of buildings.
- Ornamental trim and accents: Architectural bronze C38500 is used for ornamental trim, accents, and decorative elements in architectural designs. It can be seen in decorative panels, moldings, rosettes, medallions, and other intricate details.
- Window and door frames: Due to its strength and corrosion resistance, C38500 is employed in the manufacturing of window frames and door frames. It provides structural support while adding an elegant touch to the overall design.
- Signage and plaques: C38500 brass is often used for signage, plaques, and nameplates in architectural settings. Its durability, machinability, and ability to withstand outdoor conditions make it suitable for such applications.
- Sculptures and art installations: The formability and malleability of C38500 make it a popular choice for creating sculptures, art installations, and other artistic pieces. Its warm golden hue adds a touch of elegance to artistic creations.
- Railings and balustrades: C38500 is used for crafting railings and balustrades in both interior and exterior spaces. Its strength and corrosion resistance allow it to withstand the rigors of regular use while providing an attractive and sturdy railing system.
- Decorative plumbing fixtures: The machinability and corrosion resistance of C38500 make it suitable for manufacturing decorative plumbing fixtures such as faucets, spouts, and showerheads.