CuZn20Al2As Copper

Grade Name

CuZn20Al2As (also known as Aluminum Brass with Arsenic)

Product Features

• Excellent Corrosion Resistance: Particularly suitable for seawater and high-salinity environments.

• High Strength and Hardness: Enhanced by aluminum and arsenic additions.

• Good Wear Resistance: Ideal for high-friction applications.

• Superior Thermal Conductivity: Suitable for heat exchange applications.

• Antimicrobial Properties: Arsenic addition provides antimicrobial benefits, making it suitable for specific environments.

Common Product Forms and Specifications

Product Form	Specification Range	Remarks
Rods	Diameter: 5mm – 200mm	Custom lengths available
Plates	Thickness: 0.5mm – 50mm	Width: 100mm – 1000mm
Tubes	Outer Diameter: 10mm – 150mm	Wall Thickness: 1mm – 10mm
Wires	Diameter: 0.1mm – 10mm	Supplied in coils or straight lengths
Castings	Customized as per customer requirements	Suitable for complex parts

Chemical Composition

Element	Content (%)	Remarks
Copper (Cu)	76.0 – 79.0	Main component
Zinc (Zn)	19.0 – 21.0	Main alloying element
Aluminum (Al)	1.5 – 2.5	Enhances strength and corrosion resistance
Arsenic (As)	0.02 – 0.06	Improves corrosion resistance and antimicrobial properties
Lead (Pb)	≤ 0.05	Impurity control
Iron (Fe)	≤ 0.3	Impurity control
Others	≤ 0.5	Total impurities

Physical Properties

Property	Value Range	Remarks
Density (g/cm³)	8.2 – 8.5	Moderate
Melting Point (°C)	900 – 920	Suitable for high-temperature environments
Thermal Conductivity (W/m·K)	120 – 130	Good thermal conductivity
Electrical Conductivity (% IACS)	25 – 30	Moderate
Thermal Expansion Coefficient (10⁻⁶/K)	20 – 22	Suitable for environments with temperature variations

Mechanical Properties

Property	Value Range	Remarks
Tensile Strength (MPa)	450 – 550	High strength
Yield Strength (MPa)	220 – 280	Good ductility
Elongation (%)	15 – 25	Suitable for forming
Hardness (HB)	130 – 160	Good wear resistance
Impact Toughness (J/cm²)	50 – 70	Suitable for dynamic load environments

Core Advantages

• Superior Corrosion Resistance: Especially in seawater and high-salinity environments.

• High Strength and Hardness: Enhanced by aluminum and arsenic additions.

• Good Wear Resistance: Suitable for high-friction applications.

• Antimicrobial Properties: Arsenic addition provides antimicrobial benefits.

• Environmental Friendliness: Low lead content, complies with environmental standards.

Product Applications

• Marine Engineering: Used in seawater desalination equipment, ship components, and heat exchangers.

• Chemical Industry: Suitable for corrosion-resistant pipes, valves, and pump bodies.

• Power Industry: Used in condenser tubes and heat exchangers.

• Automotive Industry: Used in bearings, bushings, and connectors.

• Healthcare: Suitable for antimicrobial applications in specific environments.

Processing Precautions

• Machining: Use high-speed steel or carbide tools with cooling lubrication.

• Welding Performance: Argon arc welding or brazing is recommended; avoid overheating to prevent performance degradation.

• Surface Treatment: Polishing, electroplating, or coating can enhance corrosion resistance.

• Storage Environment: Avoid contact with acidic or alkaline substances; keep dry and ventilated.

Main Application Scenarios

• Marine Engineering: Seawater desalination equipment, ship components, and heat exchangers.

• Chemical Industry: Corrosion-resistant pipes, valves, and pump bodies.

• Power Industry: Condenser tubes and heat exchangers.

• Automotive Manufacturing: Wear-resistant bearings, bushings, and connectors.

• Healthcare: Antimicrobial applications in specific environments.

Frequently Asked Questions

Q1: How is the corrosion resistance of CuZn20Al2As?

A1: CuZn20Al2As has excellent corrosion resistance, particularly in seawater and high-salinity environments.

Q2: Is this material suitable for high-temperature environments?

A2: CuZn20Al2As has a high melting point (900-920°C) and can be used in high-temperature environments, but prolonged exposure may degrade performance.

Q3: How difficult is it to process CuZn20Al2As?

A3: This material has good machinability and ductility, making it easy to process and suitable for various forming techniques.

Q4: How environmentally friendly is CuZn20Al2As?

A4: The material has low lead content, complies with environmental standards, and is suitable for industries with high environmental requirements.

Standard References

• International Standard: ISO 426-1 (Chemical composition and properties of copper-zinc alloys).

• Chinese Standard: GB/T 5231 (Chemical composition and product forms of wrought copper and copper alloys).

• American Standard: ASTM B36 (Standard specification for brass plate, sheet, strip, and rolled bar).