ZCuZn25Al6Fe3Mn4 High-Strength Brass: Main Element Content and Their Roles

ZCuZn25Al6Fe3Mn4 is a high-strength brass alloy, where the letters and numbers in its name represent the major alloying elements and their respective contents. Below is a detailed chemical composition analysis of the ZCuZn25Al6Fe3Mn4 alloy:

Chemical Composition

• Copper (Cu): Balance (typically ranging from 57% to 65%)
• Zinc (Zn): Approximately 25%
• Aluminum (Al): Approximately 6%
• Iron (Fe): Approximately 3%
• Manganese (Mn): Approximately 4%
• Other Trace Elements: Small amounts, varying depending on production standards and manufacturers. These may include trace impurities such as lead (Pb) and tin (Sn).

Roles of Each Component

Copper (Cu):

• Acts as the base material, providing good electrical and thermal conductivity.
• Is the primary constituent of the alloy, contributing to its favorable mechanical properties and machinability.

Zinc (Zn):

• Reduces the cost of the alloy while enhancing its strength and hardness.
• Improves the casting properties of the alloy, making it easier to form complex parts.

Aluminum (Al):

• Enhances the strength and hardness of the alloy, as well as its wear resistance.
• Aids in the formation of a protective oxide film, thereby improving the alloy's corrosion resistance.

Iron (Fe):

• Strengthens and hardens the alloy.
• Refines the grain structure of the alloy, contributing to improved mechanical properties.

Manganese (Mn):

• Increases the strength and hardness of the alloy, particularly maintaining high strength at elevated temperatures.
• Refines the grain size, enhancing the alloy's toughness and wear resistance.

Physical Properties

• Density: Approximately 7.8 g/cm³
• Melting Point Range: Approximately 900°C to 950°C
• Thermal Conductivity: Relatively high, facilitating heat dissipation
• Electrical Conductivity: Good, due to the high copper content

Mechanical Properties

• Tensile Strength (σb): ≥690 MPa
• Yield Strength (σ0.2): ≥295 MPa
• Elongation (δ5): ≥8%
• Hardness (HBW): ≥180

Applications

ZCuZn25Al6Fe3Mn4 high-strength brass is widely used in various industries due to its excellent mechanical properties and relatively good corrosion resistance. Common applications include, but are not limited to:

• Industrial Automation: Such as guide rail systems and robot joints.
• Machine Tool Equipment: CNC machine tools, tool guiding devices, etc.
• Food Processing: Conveying equipment, oil-free lubrication components, etc.
• Packaging Machinery: Packaging material conveying devices, guide wheels, etc.
• Construction Equipment: Key components in construction machinery, such as bushings and bearings.

Summary

The ZCuZn25Al6Fe3Mn4 alloy achieves high strength, good wear resistance, and certain corrosion resistance through precise control of the proportions of its alloying elements. This alloy is highly suitable for manufacturing mechanical components that need to withstand significant loads and wear. Its favorable machinability also enables its widespread use in the fabrication of parts with complex shapes.

Zhejiang Mingxu Machinery Manufacturing Co., Ltd. has been engaged in the R&D and production of copper alloy components and self-lubricating bearings for over a decade, with rich production experience and technical accumulation. For any product or technical inquiries, please contact us at any time: [email protected].