NICKEL SILVER

IS 10757 Nickel Silver:

Indian Standard specifying the composition and mechanical properties for nickel silver alloys.

BS 2874 Ns 101:

British Standard specifying the requirements for nickel silver alloys.

ASTM 79830 / Nm3 / Nm6 / C79830:

ASTM standards specifying the composition and mechanical properties for various grades of nickel silver alloys.

Properties:

1. Corrosion Resistance:
• Excellent resistance to corrosion in a variety of environments, including marine and industrial.
• Particularly resistant to tarnish, making it suitable for decorative applications.
Mechanical Properties:
• Tensile Strength:Typically around 350-600 MPa.
• Yield Strength: Approximately 100-250 MPa.
• Elongation: Generally around 15-30%, indicating good ductility
• Hardness: Moderate hardness, with a typical Brinell hardness number (HB) of around 80-150.
Machinability:
• Good machinability due to the presence of lead, making it suitable for machining and forming operations.
• Often used in the production of intricate parts and decorative items.
Aesthetic Appearance:
• Attractive silvery appearance due to nickel content, making it popular for decorative applications.
• Good polishability, suitable for high-end finishes.
2. 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:

Decorative Items: Extensively used in the production of jewelry, musical instruments, and art objects due to its attractive appearance and tarnish resistance.
Architectural Applications: Commonly used in architectural elements such as railings, trim, and fittings where both strength and aesthetics are important.
Electrical Components: Employed in electrical connectors and terminals due to its good conductivity and and corrosion resistance.
Industrial Equipment: Suitable for various industrial equipment parts, including gears, valves, and connectors, where good formability and machinability are required.