CuZn38Pb1.5 Brass

Grade Name

CuZn38Pb1.5 (Leaded Brass)

International Designation: C38500 (ASTM)/CW617N (EN).

Product Features

• Excellent machinability (lead improves cutting).

• Good corrosion and wear resistance.

• Moderate strength for precision components.

• Easy to polish or plate.

Common Forms & Dimensions

Form	Dimensions
Bar	Diameter: Φ5mm–Φ150mm, Length: 1m–6m
Wire	Diameter: Φ0.5mm–Φ10mm, Coiled
Sheet	Thickness: 0.5mm–50mm, Width: ≤1000mm
Tube	OD: Φ10mm–Φ200mm, Wall: 1mm–20mm

Chemical Composition (%)

Element	Cu	Zn	Pb	Fe (≤)	Others (≤)
Content	58–61	Bal.	1.0–2.0	0.35	0.5

Physical Properties

Property	Value
Density	8.5 g/cm³
Melting Point	885–900°C
Electrical Conductivity	28% IACS (20°C)
Thermal Conductivity	115 W/(m·K) (20°C)
Thermal Expansion	20.2×10⁻⁶/K (20–300°C)

Mechanical Properties

Property	Value
Tensile Strength	≥340 MPa
Yield Strength	≥145 MPa
Elongation	≥15%
Hardness (HB)	75–110
Elastic Modulus	105 GPa

Key Advantages

• High machining efficiency reduces costs.

• Corrosion resistance for humid environments.

• Suitable for complex precision parts.

Applications

• Machinery: Valves, gears, bearings.

• Electronics: Connectors, terminals.

• Architecture: Decorative hardware, faucets.

• Automotive: Fuel system components.

Processing Notes

• Machining: Use HSS or carbide tools.

• Cold Working: Annealing required.

• Welding: Not recommended (lead vapor).

• Surface Treatment: Ni/Cr plating advised.

Key Application Scenarios

• CNC-machined precision parts.

• Marine corrosion-resistant fasteners.

• Wear-resistant components in appliances.

FAQ

Q1: Is it eco-friendly?

A: Contains lead; complies with RoHS exemptions.

Q2: Alternatives for lead-free use?

A: Use CuZn39Pb3 or special lead-free grades (lower machinability).

Q3: Resistance to seawater?

A: Requires protective coatings; periodic maintenance needed.

Standards Reference

• International: ASTM B453, EN 12163.

• China: GB/T 5231-2012.