Back to Brass Plate
C385
Architectural Bronze Plate
C38500
Overview
C385 Architectural Bronze (despite its name, it is technically a brass) offers excellent machinability and a distinctive warm golden-brown color. With approximately 57% copper, 3% lead, and the balance zinc, it is widely used for architectural hardware, decorative applications, and industrial components requiring a rich, elegant appearance with easy machinability.
Chemical Composition
| Element | Min | Max |
|---|---|---|
| Copper (Cu) | 55.0 | 59.0 |
| Zinc (Zn) | 35.0 | 42.0 |
| Lead (Pb) | 2.5 | 3.5 |
| Iron (Fe) | 0 | 0.35 |
Alloy Designations
UNSC38500
ASTMB455
SAEJ461, J463
Mechanical Properties
Tensile Strength49,000 – 58,000 psi
Yield Strength (0.5% ext.)17,000 – 40,000 psi
Elongation in 2"15 – 50%
Rockwell HardnessB30 – B65
Shear Strength34,000 – 42,000 psi
Physical Properties
Density0.305 lb/in³ (8.44 g/cm³)
Melting Point1,600 – 1,660 °F (871 – 904 °C)
Electrical Conductivity26% IACS
Thermal Conductivity67 BTU/ft·hr·°F
Modulus of Elasticity14,000 ksi
Typical Applications
- Architectural hardware and trim
- Door and window hardware
- Hinges, locks, and decorative plates
- Industrial fittings and components
- Engraving and signage plates
- Plumbing fixtures
Fabrication & Joining
- Machinability rating: 90%
- Excellent hot workability for forging and extrusion
- Fair cold workability
- Readily soldered and brazed
- Good polishing and finishing characteristics