Ningbo Jintian Copper (Group) Co., Ltd.
Ningbo Jintian Copper (Group) Co., Ltd.
Copper

CuZn40 Copper

Copper

Grade Name

  • Grade Name: CuZn40

  • International Standard: EN 12164 CW509L

  • Other Names: 60/40 Brass, C28000 (American Standard), CZ108 (British Standard)


Product Features

  • Excellent Hot and Cold Working Properties: Suitable for both hot and cold working, easy to form.

  • Good Corrosion Resistance: Performs well in general environments.

  • Moderate Strength: Offers good mechanical strength and ductility.

  • Good Electrical and Thermal Conductivity: Suitable for electrical and heat exchange applications.

  • Wide Applications: Used in precision parts, fittings, decorative items, 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

58.0 - 63.0

Main component

Zn

Balance

Main alloying element

Pb

≤0.3

Impurity

Fe

≤0.3

Impurity

Ni

≤0.5

Impurity

Sn

≤0.3

Impurity

Others

≤0.2

Impurity


Physical Properties

Property

Value

Remarks

Density

8.5 g/cm³

-

Melting Point

900 - 905°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

350 - 500 MPa

-

Yield Strength

120 - 200 MPa

-

Elongation

20 - 35%

-

Hardness

70 - 110 HB

-

Elastic Modulus

100 - 110 GPa

-


Core Advantages

  • Excellent Hot and Cold Working Properties: Suitable for both hot and cold working, easy to form.

  • Good Corrosion Resistance: Performs well in general environments.

  • Good Electrical and Thermal Conductivity: Suitable for electrical and heat exchange applications.

  • Wide Application Range: Used in precision parts, fittings, decorative items, etc.


Product Applications

  • Pipe Fittings: Used in water and gas pipe connectors.

  • Electrical Industry: Terminals, connectors, etc.

  • Heat Exchangers: Suitable for heat exchangers, radiators, etc.

  • Decorative Materials: Door handles, decorative pieces, etc.

  • Mechanical Parts: Gears, bearings, bushings, 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

  • Plumbing Industry: Pipe fittings, connectors, etc.

  • Electrical Industry: Terminals, connectors, etc.

  • Heat Exchangers: Radiators, heat exchangers, etc.

  • Architectural Decoration: Door handles, decorative pieces, etc.

  • Mechanical Manufacturing: Gears, bearings, bushings, etc.


Frequently Asked Questions (FAQs)

Q1: How is the machinability of CuZn40?

A1: CuZn40 has good machinability, suitable for general machining processes.


Q2: What is the corrosion resistance of CuZn40?

A2: It has good corrosion resistance in general environments but requires protection in acidic or alkaline conditions.


Q3: Is CuZn40 suitable for welding?

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


Q4: What are the main application areas of CuZn40?

A4: It is widely used in plumbing, electrical, heat exchange, architectural decoration, and mechanical manufacturing industries.


Standard References

  • International Standard: EN 12164 CW509L

  • American Standard: ASTM B36 C28000

  • Japanese Standard: JIS H3250 C2800

  • Chinese Standard: GB/T 5231 H62


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