C44300 (Navy Brass/Tin Brass) is a corrosion-resistant alloy with a copper-zinc matrix. Its performance is enhanced by the addition of elements such as tin and arsenic. It is widely used in marine engineering, energy equipment, and other fields. Its core characteristics and processing key points are as follows:
Composition and Properties of ASTM B111 C44300 Copper Alloy Pipe
Chemical Composition
Base Elements: Primarily copper (69.0-71.0%) and zinc (the remainder), supplemented by tin (0.8-1.3%) and trace arsenic (0.03-0.06%).
Impurity Control: Impurities such as lead (≤0.05%) and iron (≤0.10%) are strictly limited to ensure material purity.
Physical and Mechanical Properties
Density: 8.53 g/cm³, thermal conductivity: 109 W/(m·K), electrical conductivity: 28% IACS.
Strength: Tensile strength ≥410 MPa, yield strength ≥70 MPa, elongation ≥8%.
Hardness: Brinell hardness approximately 80 HB, offering both wear resistance and machinability.
Core Features of ASTM B111 C44300 Copper Water Tube
Corrosion Resistance
Dezincification Resistance: Arsenic inhibits dezincification, significantly improving corrosion resistance in seawater, freshwater, and steam environments.
Suitability for Special Media: Outperforms aluminum brass in ammonia-containing environments, offering outstanding erosion corrosion resistance.
Thermal Stability: With a melting point of approximately 890°C, it is suitable for high-temperature steam and heat exchange applications, and features a low coefficient of thermal expansion.
Typical Applications of ASTM B111 C44300 Hollow Copper Tube
Marine Engineering: Components exposed to seawater for extended periods, such as condenser tubes, ship propellers, and seawater pump bodies.
Energy and Chemical Engineering: High-temperature and high-pressure equipment, such as heat exchangers, evaporators, and nuclear power plant cooling pipes. Industrial Manufacturing
Valves, high-precision instrument components, architectural decorative components, etc.
Processing and Treatment of ASTM B111 C44300 Thick Wall Copper Tubing
Forming Process
Cold Working: Suitable for casting and forging. Annealing temperature: 400-650°C to relieve internal stresses.
Weldability: Easy to weld, but heat input must be controlled to avoid intergranular corrosion.
Surface Treatment
Chemical polishing or passivation improves corrosion resistance and is suitable for components exposed to long-term corrosive environments.
Due to its high corrosion resistance, excellent mechanical properties, and thermal stability, C44300 copper alloy has become a core material for marine engineering and energy equipment. Its optimized composition (such as arsenic to inhibit dezincification) and processing technology ensure reliable application in complex operating conditions.
why choose us
Professional copper pipe supplier
As a professional enterprise dedicated to global copper product, GNEE Metal 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.
Contact us today for a quotation：sales@gneesteel.com
Packaging and shipping
GNEE offers professional packaging for exported copper pipes. First, we apply anti-rust oil and plastic film to prevent oxidation. Then, we securely strap with steel straps and add corner protectors. Finally, we place the pipes on wooden pallets and reinforce them with iron or wooden boxes, ensuring they are moisture-proof and impact-resistant during ocean transport, while facilitating easy loading and unloading. All packaging meets export standards.
Customer visits
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