C33000 – Low Lead Brass

Chemical Composition

C33000 Low-Lead Brass is a high-strength copper–zinc alloy containing a small, controlled amount of lead to enhance machinability while maintaining excellent cold-forming and tube-drawing characteristics. The composition ensures a clean, uniform structure suitable for seamless tubes and precision parts.

Note: The small lead addition improves machinability and surface finish without compromising ductility or formability. This makes C33000 a preferred material for seamless brass tubes, fittings, and precision components.

Mechanical, Physical & Fabrication Properties

C33000 Low-Lead Brass is an alpha-phase brass alloy containing a small addition of lead to improve machinability while retaining excellent ductility and tube-drawing characteristics. It offers a balanced combination of strength, formability, and corrosion resistance, making it ideal for drawn and fabricated components.

Applications

C33000 Low-Lead Brass is widely used in applications where excellent tube-drawing capability, strength, corrosion resistance, and appearance are required. Its balance of formability and machinability makes it ideal for both industrial and precision-engineered components.

• Seamless Tubes: Used in condensers, heat exchangers, and plumbing systems due to its smooth surface finish and superior forming behavior.
• Pump & Cylinder Liners: Suitable for applications requiring wear resistance, precision tolerances, and dimensional stability.
• Ammunition Components: Commonly used for primer cups and similar deep-drawn parts that demand high ductility and clean forming.
• Precision Hardware: Utilized in mechanical, marine, and decorative fittings where both performance and a bright, golden appearance are desired.

Thanks to its low lead content, ease of forming, and clean finish, C33000 remains a preferred material for seamless tubing and precision-engineered brass components across diverse industries.

Standards & International Equivalents:

C33000 Low-Lead Brass is recognized under various international and industrial standards for seamless tubing and wrought brass products. It is often produced and supplied in accordance with ASTM, EN, and ISO specifications depending on form and application.

Note: Depending on form (tube, sheet, bar), C33000 may also conform to other ASTM or EN specifications for wrought copper–zinc alloys.

Common Names & International Identifiers

C33000 Low-Lead Brass is commonly known across the industry by several trade and technical names. It is primarily recognized for its excellent tube-drawing properties, machinability, and golden finish.

• Trade / Common Names: Low-Lead Brass, Tubing Brass
• CDA / UNS Designation: C33000 (CDA Alloy 330)
• Equivalent European Designations: CW606N / CuZn33Pb0.5

Known for its reliable performance in seamless brass tubing and precision components, C33000 is widely used under the trade name “Tubing Brass” for its superior drawability and clean surface finish.

C33000 Brass Round Tubes – Dimensions & Weight per Metre

C33000 Low-Lead Brass Tubes are precision-drawn and supplied in a wide range of metric and imperial sizes for use in condensers, plumbing, and general engineering. Below is a standard weight chart for round tube sizes.

C33000 Brass Square Tubes – Dimensions & Weight per Metre

Note: The above tables show approximate theoretical weights for C33000 Brass Tubes (both round and square). Custom sizes, tempers, and finishes can be supplied on request for HVAC, plumbing, and precision engineering applications.