70/30 BRASS

ASTM B 135 C 26000:

ASTM B135: Standard Specification for Seamless Brass Tube.
C26000: Designation for 70/30 Brass in this standard.

BS 2871 Part 3 CZ - 126:

British Standard for copper and copper alloys – Tubes.
CZ 126: Designation for 70/30 Brass in this standard.

EN 12449 CuZn30As CW 505L:

European standard for copper and copper alloys – Seamless, round tubes for general purposes.
CW 505L: European designation for 70/30 Brass.

NFA 51 102 CuZn30:

French standard for copper and copper alloys.
CuZn30:Designation for 70/30 Brass.

JIS H 3300 C 2600:

Japanese Industrial Standard for copper and copper alloy seamless tubes.
C 2600: Japanese designation for 70/30 Brass.

AS 1572 26130:

Australian standard for copper and copper alloy seamless tubes.
26130: Designation for 70/30 Brass.

Properties:

1. Corrosion Resistance:
• Excellent resistance to corrosion in various environments, including freshwater and mildly acidic conditions.
• Good resistance to dezincification and stress corrosion cracking.
Mechanical Properties:
• Tensile Strength:Typically around 300-450 MPa.
• Yield Strength: Approximately 100-200 MPa.
• Elongation: Generally around 30-40%, indicating good ductility
• Hardness: Moderate hardness, with a typical Brinell hardness number (HB) of around 70-110.
Thermal and Electrical Conductivity:
• Good thermal conductivity, making it suitable for heat exchanger applications.
• Moderate electrical conductivity, less than pure copper but sufficient for many industrial uses.

Applications:

• Plumbing and Heating: Used extensively in plumbing systems, fittings, and valves due to its corrosion resistance and ease of fabrication.
• Heat Exchangers: Ideal for heat exchanger tubes and other thermal applications due to its good thermal conductivity.
• Industrial Applications: Employed in various industrial equipment, including marine hardware and fasteners.
• Electrical Applications:Used in electrical connectors and components where moderate conductivity is sufficient.