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C36000 Lead Brass Alloy - Premium Quality from China Suppliers and Factory for Precision Components
1. Core chemical composition (UNS standard)
| Element | Content Range (%) |
| Copper (Cu) | 60.0–63.0 |
| Lead (Pb) | 2.5–3.7 |
| Zinc (Zn) | Excess |
| Iron (Fe) | ≤0.35 |
| Total impurity content | ≤0.5 |
2. Physical properties (typical values)
| Performance indicators | Typical values |
| Density | 8.50 g/cm³ |
| Melting point | 885–900 ℃ |
| Thermal conductivity | 115 W/(m·K) |
| Electrical conductivity | 26 % IACS (annealed state) |
| Elastic modulus | 105–115 GPa |
3. Main Characteristics
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Excellent machinability, superior to ordinary brass
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Excellent chip removal, does not get stuck on the blade, suitable for high-speed automatic lathes and CNC
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Good cold working performance, capable of slight bending and stamping
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Both electrical conductivity and heat conductivity are relatively good, suitable for terminals or heat dissipation components
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High yield rate, easy for both cold and hot processing
4. Application Fields
Automotive Industry
Fuel system joints, fuel injector housings, nuts and bolts
Electrical and Electronic
Connector terminals, connectors, heat sinks, terminal blocks
Precision Machinery and Instruments
Gears, instrument joints, watch movement parts
Hardware and Consumer Electronics
Small hardware components, electrical enclosures
Water Supply and Valves
Valve bodies, valve cores, valve stems, pipe joints, faucet accessories
Frequently Asked Questions (FAQ)
Q1: What is the main chemical composition of this brass alloy?
A1: This alloy primarily consists of 60.0% to 63.0% Copper (Cu) and 2.5% to 3.7% Lead (Pb), with Zinc (Zn) making up the remaining balance, and minor impurities kept below 0.5%.
Q2: Why is lead added to this brass composition?
A2: Lead acts as a microscopic lubricant and chip breaker. It ensures excellent chip removal, prevents sticking to the cutting blade, and allows for high-speed automatic lathe and CNC machining.
Q3: Can this material be used for electrical components?
A3: Yes. With an electrical conductivity of 26% IACS (annealed state) and a thermal conductivity of 115 W/(m·K), it is highly suitable for connector terminals, heat sinks, and terminal blocks.
Q4: What are the typical physical property limits of this alloy?
A4: It features a density of 8.50 g/cm³, a melting point range of 885–900 ℃, and an elastic modulus of 105–115 GPa, providing a robust structural balance for precision manufacturing.
Q5: What makes it suitable for the valve and water supply industry?
A5: Its combination of excellent machinability, high yield rate, and good hot/cold processing characteristics makes it ideal for fabricating complex components like valve bodies, cores, stems, and faucet accessories.
Q6: How does this brass behave during cold working?
A6: While highly optimized for free-cutting machining, it still maintains good cold working performance, allowing for slight bending and stamping operations during assembly.