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Why Choose Brass for CNC Machining?

Brass is a metal commonly used in various industries due to its mechanical strength, corrosion resistance, malleability, conductivity, and acoustic characteristics. The inclusion of copper, zinc, and lead in brass enhances its machinability, making it an ideal material for CNC processing.

Advantages of Brass CNC Machining

• Easy to machine – one of the most machinable materials available.
• Good strength and moderate hardness – usable in a wide range of applications.
• Excellent corrosion resistance – especially when alloyed with aluminum.
• Visually attractive – requires no additional surface coating.
• High electrical conductivity and low friction properties.

Common Brass Grades for CNC Machining

Different brass grades offer varying performance benefits depending on composition. Below are popular brass materials used in machining:

1. Brass C360

Also known as free-machining brass. It contains 3% lead and is highly machinable. Commonly used for electrical parts, fittings, and connectors.

• Excellent machinability
• Good corrosion resistance
• High tensile strength

• Lead content unsuitable for medical-grade applications
• Vulnerable to acidic environments

2. Brass C230

Known as red or Nordic brass. Used in plumbing, marine components, and rotor bars due to its corrosion resistance.

• Resistant to dezincification
• Moderate tensile strength
• Good corrosion resistance

• Not ideal for extremely harsh environments

3. Brass C220

Often referred to as commercial bronze. Contains higher copper content and offers excellent formability and visual appeal. Widely used in architecture.

• Excellent ductility
• Good corrosion resistance
• Attractive finish

• May require annealing after exposure to stress

Surface Finishes for Brass CNC Parts

Various finishes can enhance brass part durability and aesthetics:

• Powder Coating: Brass can be powder coated to increase surface durability and appearance.
• Grinding: Removes surface irregularities using abrasive wheels.
• Anodizing: Typically not suitable for brass except aluminum-copper alloys.
• Plating: Chrome and nickel plating available for aesthetics and wear resistance.

Is Brass Right for Your CNC Project?

To ensure the suitability of brass, verify that your application requirements match the specific brass grade's properties. Our engineers can help evaluate your project’s material needs and provide machining recommendations.

We offer CNC milling, turning, EDM, and more, all with ISO 9001 certified processes. Get expert guidance and precision components tailored to your project.

Contact us today and receive a quote and design feedback within 5 business hours.