Chemical Composition:

1. Copper (Cu): Approximately 71.0 - 75.0%

2. Lead (Pb): Approximately 0.80 - 1.50%

3. Zinc (Zn): Approximately 22.0 - 28.0%

4. Iron (Fe): Maximum 0.07%

5. Other Elements: Includes trace amounts of other elements such as sulfur (S), phosphorus (P), and tin (Sn), typically less than 0.05% each.

Properties:

1. Mechanical Properties: C44400 brass exhibits good strength, machinability, and wear resistance due to its composition. It can be easily formed into coils and other shapes.

2. Corrosion Resistance: It offers moderate corrosion resistance in most environments, making it suitable for various industrial and marine applications.

3. Electrical Conductivity: While not as high as pure copper, C44400 still maintains reasonable electrical conductivity, which is sufficient for many electrical and electronic applications.

4. Lead Content: C44400 contains lead as an alloying element, which provides improved machinability and wear resistance but requires careful handling due to environmental and health considerations.

Standards: C44400 brass conforms to various standards such as ASTM B21 (for naval brass) and ASTM B584 (for copper alloy sand castings).

C44400 is a copper alloy known as Leaded Naval Brass. Here is the typical chemical composition of C44400 copper coil:

Copper (Cu): 71.0 - 75.0%

Lead (Pb): 0.80 - 1.50%

Zinc (Zn): 22.0 - 28.0%

Iron (Fe): Maximum 0.07%

Other Elements: Includes trace amounts of other elements such as sulfur (S), phosphorus (P), and tin (Sn), typically less than 0.05% each.

Key points about the chemical composition:

Copper (Cu): The primary constituent, providing the base metal with its inherent electrical conductivity and corrosion resistance.

Lead (Pb): Enhances machinability and wear resistance of the alloy. The lead content is controlled within specific limits to balance these properties without compromising other characteristics.

Zinc (Zn): A major alloying element that contributes to the strength, hardness, and corrosion resistance of the alloy.

Iron (Fe): Present in trace amounts, it helps in enhancing the alloy's mechanical properties.

Other Elements: Trace elements like sulfur, phosphorus, and tin are included in minimal quantities to refine the alloy's properties and ensure it meets specified standards.

Composition:

1. Copper (Cu): C44400 typically contains around 71.0% to 75.0% copper, providing the base metal with its inherent conductivity and corrosion resistance.

2. Lead (Pb): Approximately 0.80% to 1.50% lead content contributes to improved machinability and wear resistance.

3. Zinc (Zn): Comprising about 22.0% to 28.0%, zinc enhances the alloy's strength and corrosion resistance.

4. Other Elements: Trace amounts of elements such as iron (Fe), sulfur (S), phosphorus (P), and tin (Sn) are present in minimal concentrations to fine-tune the alloy's properties.

Mechanical Properties:

1. Strength: C44400 exhibits good mechanical strength due to its composition of copper and zinc, making it suitable for structural components and fittings.

2. Machinability: The presence of lead significantly improves machinability, allowing for easier cutting, shaping, and forming during manufacturing processes.

Corrosion Resistance:

1. General Corrosion: C44400 provides moderate corrosion resistance in various environments, including marine and industrial settings. Its resistance to corrosion makes it suitable for components exposed to moisture and atmospheric conditions.

Electrical Conductivity:

1. Moderate Conductivity: While not as conductive as pure copper, C44400 retains sufficient electrical conductivity for many electrical and electronic applications, ensuring efficient transmission of electrical signals and power.

Environmental Considerations:

1. Lead Content: As a leaded brass alloy, C44400 requires careful handling and disposal practices due to the presence of lead, which is a hazardous material. Manufacturers and users must adhere to safety regulations and environmental standards regarding lead usage.

Applications:

1. Industrial: C44400 copper coils are used in various industrial applications such as plumbing fittings, valves, and components where corrosion resistance and machinability are important.

2. Electrical: It finds use in electrical connectors and terminals where moderate conductivity and corrosion resistance are required.

3. Marine: Due to its corrosion resistance, C44400 is suitable for marine hardware and fittings.

4. Automotive: It can be found in automotive components where its wear resistance and machinability are beneficial.