CuZn28Sn1As Copper

Grade Name

• Grade Name: CuZn28Sn1As

• International Standard: EN 12164 CW706R

• Other Names: Naval Brass, C46400 (American Standard), CZ111 (British Standard)

Product Features

• Excellent Corrosion Resistance: Particularly suitable for seawater and marine environments, with outstanding corrosion resistance.

• Good Mechanical Properties: High strength and good ductility.

• Anti-Biofouling: Excellent resistance to biofouling in marine environments.

• Ease of Processing: Suitable for both hot and cold working, easy to form.

• Wide Applications: Used in shipbuilding, marine engineering, heat exchangers, etc.

Common Product Forms and Dimensions

Product Form	Dimensions	Remarks
Rods	Ø5mm – Ø200mm	Round, hexagonal, square rods
Plates	Thickness: 0.5mm – 50mm	Width: 100mm – 600mm
Tubes	Outer Diameter: Ø6mm – Ø150mm	Wall Thickness: 0.5mm – 10mm
Wires	Ø0.1mm – Ø10mm	Coiled or straight
Forgings	Customized as per customer requirements	Suitable for complex parts

Chemical Composition

Element	Content (%)	Remarks
Cu	70.0 – 73.0	Main component
Zn	Balance	Main alloying element
Sn	0.8 – 1.2	Improves corrosion resistance
As	0.02 – 0.10	Enhances anti-biofouling properties
Fe	≤0.3	Impurity
Ni	≤0.5	Impurity
Pb	≤0.2	Impurity
Others	≤0.2	Impurity

Physical Properties

Property	Value	Remarks
Density	8.5 g/cm³	–
Melting Point	900 – 925°C	–
Thermal Conductivity	120 W/(m·K)	20°C
Electrical Conductivity	28% IACS	20°C
Thermal Expansion Coefficient	20.2 × 10⁻⁶ /K	20-300°C
Specific Heat Capacity	0.38 J/(g·K)	20°C

Mechanical Properties

Property	Value	Remarks
Tensile Strength	450 – 600 MPa	–
Yield Strength	200 – 300 MPa	–
Elongation	20 – 35%	–
Hardness	80 – 130 HB	–
Elastic Modulus	100 – 110 GPa	–

Core Advantages

• Excellent Corrosion Resistance: Particularly suitable for seawater and marine environments, with outstanding corrosion resistance.

• Good Mechanical Properties: High strength and good ductility.

• Anti-Biofouling: Excellent resistance to biofouling in marine environments.

• Ease of Processing: Suitable for both hot and cold working, easy to form.

Product Applications

• Shipbuilding: Used in ship components, propellers, etc.

• Marine Engineering: Suitable for offshore platforms, seawater pipelines, etc.

• Heat Exchangers: Used in seawater coolers, condensers, etc.

• Chemical Equipment: Suitable for corrosion-resistant chemical equipment.

• Power Industry: Used in seawater cooling systems, etc.

Processing Notes

• Hot and Cold Working: Be cautious of work hardening during cold working; hot working temperature should be between 600-800°C.

• Machining: Use high-speed steel or carbide tools with moderate cutting speeds.

• Welding: Good weldability; brazing or soft soldering is recommended.

• Surface Treatment: Polishing, plating, etc., can enhance appearance and corrosion resistance.

Main Application Scenarios

• Shipbuilding: Propellers, ship components, etc.

• Marine Engineering: Offshore platforms, seawater pipelines, etc.

• Heat Exchangers: Seawater coolers, condensers, etc.

• Chemical Equipment: Corrosion-resistant chemical equipment.

• Power Industry: Seawater cooling systems, etc.

Frequently Asked Questions (FAQs)

Q1: How is the corrosion resistance of CuZn28Sn1As?

A1: CuZn28Sn1As has excellent corrosion resistance, particularly suitable for seawater and marine environments.

Q2: What are the mechanical properties of CuZn28Sn1As?

A2: It has high strength and good ductility, making it suitable for high-strength mechanical parts.

Q3: Is CuZn28Sn1As suitable for welding?

A3: It has good weldability; brazing or soft soldering is recommended.

Q4: What are the main application areas of CuZn28Sn1As?

A4: It is widely used in shipbuilding, marine engineering, heat exchangers, and chemical equipment industries.

Standard References

• International Standard: EN 12164 CW706R

• American Standard: ASTM B21 C46400

• Japanese Standard: JIS H3250 C4621

• Chinese Standard: GB/T 5231 HSn70-1