ASTM B111 C23000 Brass: Properties, Applications, and Manufacturing

ASTM B111 Copper Tube PDF

ASTM B111 C23000 copper pipe is a common copper-zinc alloy widely used in industrial and residential applications due to its excellent workability, corrosion resistance, and moderate mechanical strength. This alloy contains approximately 84%-86% copper, with the balance being zinc. This low-zinc brass (commonly known as "red copper" or "85 brass") boasts a characteristic golden appearance and excellent overall performance.

The primary components of ASTM B111 C23000 15mm copper pipe are copper (Cu) and zinc (Zn), with the Cu content ranging from 84% to 86% and the Zn content from 14% to 16%. Trace impurities such as lead (Pb) and iron (Fe) are typically kept to extremely low levels (≤0.05%) to ensure material purity and performance stability.

1. Physical Properties:
- Density: Approximately 8.75 g/cm³, between pure copper and high-zinc brass.
- Electrical and Thermal Conductivity: The electrical conductivity is approximately 28% of pure copper, providing good thermal conductivity and suitable for heat exchange applications.
- Melting Point: Approximately 900-940°C, depending on the zinc content.

2. Mechanical Properties:
- Tensile Strength: Approximately 300 MPa in the annealed state, reaching over 400 MPa after cold working.
- Elongation: Up to 45% in the annealed state, demonstrating excellent plasticity and formability.
- Hardness: Approximately 60-100 HB hardness, adjustable through cold working or heat treatment.

C23000 brass exhibits excellent corrosion resistance in freshwater and atmospheric environments, but may experience dezincification corrosion in seawater or high-chloride environments. Corrosion resistance can be further enhanced by adding trace amounts of arsenic (As) or applying a protective coating.

- Processing: Suitable for hot and cold working, and easily adaptable to forming processes such as stamping, drawing, and bending.
- Weldability: Suitable for brazing and gas shielded welding, but weld porosity caused by zinc volatilization must be avoided.

1. Architectural Decoration: Used in door and window fittings, lighting fixtures, decorative moldings, and more, combining aesthetics with durability.
2. Plumbing: Serves as pressure-resistant and corrosion-resistant connectors for water pipes and HVAC ducts.
3. Electrical Industry: Manufactures components such as conductive terminals and heat sinks, balancing cost and performance.
4. Household Hardware: Commonly used in precision parts such as locks, valves, and musical instrument reeds.

C23000 brass alloy, with its balanced mechanical properties, corrosion resistance, and ease of processing, is an ideal material for low- to medium-stress applications. Users can choose between annealed and hardened grades to meet the performance requirements of different applications.

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As a professional enterprise dedicated to global copper product trade since 2008, GNEE Metal Group deeply recognizes the quality and responsibility embodied in the ASTM B111 standard. This standard not only specifies chemical composition and mechanical properties but also represents a comprehensive quality commitment spanning manufacturing processes to testing and verification. GNEE solemnly assures global customers that every ASTM B111-standard condenser tube and copper alloy tubing we supply will strictly adhere to its requirements for seamless manufacturing, annealing treatment, eddy current testing, and various mechanical performance tests. 

 

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