Rivetting Brass

Leaded brasses, specifically formulated for riveting applications, are alloys designed to offer excellent cold working properties, making them ideal for manufacturing rivets. The addition of lead improves the machinability and lubricating properties of the alloy, enhancing its performance during the riveting process.

Composition:

Copper (Cu): Approximately 58-62%
Zinc (Zn): Approximately 36-40%
Lead (Pb): Approximately 0.5-1.5%
Other elements: May include small amounts of iron (Fe) and manganese (Mn) to enhance specific properties.

Grades

IS 4170 CuZn40:

Indian Standard specifying the composition and mechanical properties for leaded riveting brasses.

BS 2874 Cz109:

British Standard specifying the requirements for leaded riveting brass alloys.

JIS 3250 H C2800:

Japanese Industrial Standard specifying the requirements for leaded riveting brass alloys.

ASTM B171 C 36500:

ASTM standard specifying the composition and mechanical properties for leaded riveting brass.

IS 4413 CuZn37:

Indian Standard specifying the composition and properties for leaded riveting brass.

BS 2872 CZ108, CZ 131:

British Standards specifying the composition and mechanical properties for different grades of leaded riveting brasses.

Properties:

Corrosion Resistance:
- Good general corrosion resistance, suitable for various industrial and commercial applications.
- Adequate resistance to dezincification, making it suitable for less aggressive environments.
Mechanical Properties:
- Tensile Strength: Typically around 350-450 MPa.
- Yield Strength: Approximately 100-200 MPa.
- Elongation: Generally around 30-45%, indicating excellent ductility.
- Hardness: Moderate hardness, with a typical Brinell hardness number (HB) of around 80-120.
Machinability:
- Good machinability due to the presence of lead, making it suitable for machining and forming operations.
- Often used in the manufacturing of rivets and other fasteners.
Formability:
- Excellent formability, allowing for easy cold working processes such as riveting, bending, and stamping.
Thermal and Electrical Conductivity:
- Good thermal conductivity, suitable for heat exchange applications.
- Moderate electrical conductivity, sufficient for many industrial uses but lower than pure copper.

Applications:

Rivets: Extensively used in the production of rivets for various applications, including automotive, aerospace, and construction industries.
Fasteners: Commonly used in the manufacturing of various fasteners, such as bolts, screws, and nuts, due to its good machinability and formability.
Electrical Components: Employed in electrical connectors and terminals due to its good conductivity and ease of manufacturing.
Industrial Equipment: Suitable for various industrial equipment parts, including gears, valves, and connectors, where good formability is required.