CuZn38Pb2 Copper

Grade Name

• Grade Name: CuZn38Pb2

• International Standard: EN 12163 CW612N

• Other Names: 38-2 Leaded Brass, C3771 (Japanese Standard), CZ126 (British Standard)

Product Features

• Excellent Machinability: Moderate lead content ensures superior machining performance, suitable for high-speed processing.

• Good Wear Resistance: Ideal for mechanical parts requiring wear resistance.

• Moderate Strength: Offers good mechanical strength and corrosion resistance.

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

• Wide Applications: Used in precision parts, valves, fittings, 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

CuZn38Pb2 Chemical Composition

Element	Content (%)	Remarks
Cu	59.0 – 63.0	Main component
Zn	Balance	Main alloying element
Pb	1.5 – 2.5	Improves machinability
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	885 – 900°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	400 – 550 MPa	–
Yield Strength	150 – 250 MPa	–
Elongation	15 – 25%	–
Hardness	75 – 120 HB	–
Elastic Modulus	100 – 110 GPa	–

Core Advantages

• Excellent Machinability: The addition of lead significantly improves the material's machinability, making it suitable for precision machining.

• Good Wear Resistance: Ideal for parts operating in high-wear environments.

• Wide Application Range: Used in valves, fittings, gears, bearings, etc.

• Ease of Processing: Suitable for both hot and cold working, with excellent formability.

Product Applications

• Valve Manufacturing: Used in faucets, valve components.

• Pipe Fittings: Suitable for water and gas pipe connectors.

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

• Electronics and Electrical: Terminals, connectors, etc.

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

Processing Notes

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

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

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

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

Main Application Scenarios

• Plumbing Industry: Valves, fittings, connectors, etc.

• Automotive Industry: Bearings, bushings, gears, etc.

• Electronics and Electrical: Terminals, connectors, etc.

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

Frequently Asked Questions (FAQs)

Q1: How is the machinability of CuZn38Pb2 material?

A1: Due to its moderate lead content, CuZn38Pb2 has excellent machinability, making it suitable for high-speed machining.

Q2: What is the corrosion resistance of CuZn38Pb2?

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

Q3: Is CuZn38Pb2 suitable for welding?

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

Q4: What are the main application areas of CuZn38Pb2?

A4: It is widely used in plumbing, automotive, electronics, and architectural decoration industries.

Standard References

• International Standard: EN 12163 CW612N

• American Standard: ASTM B16 C3771

• Japanese Standard: JIS H3250 C3771

• Chinese Standard: GB/T 5231 HPb59-2