Brass C210
Introduction to Brass C210
Brass C210 is a high-quality copper-zinc alloy known for its excellent machinability and moderate strength. Composed primarily of copper and zinc, it provides a good balance of mechanical properties while offering good resistance to corrosion and wear. Brass C210 is ideal for precision machining due to its easy machinability, making it an excellent choice for high-speed CNC machining processes.
This alloy is commonly used in CNC machined parts such as fittings, electrical connectors, and valves. Its good workability combined with moderate strength makes it suitable for applications in plumbing, electrical, and automotive industries, where performance and cost-effectiveness are key.
Chemical, Physical, and Mechanical Properties of Brass C210
Chemical Composition (Typical)
Element | Composition Range (wt.%) | Key Role |
|---|---|---|
Copper (Cu) | 63.0–70.0% | Provides strength, conductivity, and corrosion resistance |
Zinc (Zn) | 30.0–37.0% | Enhances strength and material hardness |
Lead (Pb) | ≤0.2% | Improves machinability and lubricity |
Iron (Fe) | ≤0.5% | Minimal effect on mechanical properties |
Physical Properties
Property | Value (Typical) | Test Standard/Condition |
|---|---|---|
Density | 8.5 g/cm³ | ASTM B311 |
Melting Point | 900–950°C | ASTM E29 |
Thermal Conductivity | 100 W/m·K at 20°C | ASTM E1952 |
Electrical Conductivity | 15% IACS at 20°C | ASTM B193 |
Coefficient of Expansion | 19 µm/m·°C | ASTM E228 |
Specific Heat Capacity | 380 J/kg·K | ASTM E1269 |
Elastic Modulus | 105 GPa | ASTM E111 |
Mechanical Properties (Annealed Temper)
Property | Value (Typical) | Test Standard |
|---|---|---|
Tensile Strength | 310–380 MPa | ASTM E8/E8M |
Yield Strength (0.2%) | 230–280 MPa | ASTM E8/E8M |
Elongation | 25–35% | ASTM E8/E8M |
Hardness | 70–90 HB | ASTM E10 |
Fatigue Strength | ~160 MPa | ASTM E466 |
Impact Resistance | Good | ASTM E23 |
Key Characteristics of Brass C210
Excellent Machinability
Brass C210 offers exceptional machinability, making it ideal for high-speed CNC machining. Its low friction properties reduce tool wear and improve overall cutting performance.
Moderate Strength and Ductility
This alloy provides moderate tensile strength and good ductility, making it suitable for parts that require both strength and the ability to be formed or bent without cracking.
Corrosion Resistance
Brass C210 is corrosion-resistant, especially in atmospheric and freshwater environments, making it ideal for plumbing and electrical applications where parts are exposed to moisture.
Good Electrical Conductivity
With its high copper content, Brass C210 delivers good electrical conductivity, making it suitable for electrical connectors, terminals, and other electronic components.
Aesthetic Appeal
Brass C210 has a bright, shiny finish and is commonly used in decorative applications where appearance is important, such as in jewelry, plumbing fixtures, and hardware.
CNC Machining Challenges and Solutions for Brass C210
Machining Challenges
Chip Formation Brass C210 can generate long, stringy chips that can hinder machining.
Solution: Use chip breakers to manage long chip formation, adjust feed rates, and apply coolant for effective chip removal.
Tool Wear Though Brass C210 is a free-machining alloy, tool wear can still occur during high-speed operations due to its toughness.
Solution: Utilize high-performance carbide or ceramic tools to increase tool life and optimize cutting conditions.
Surface Finish Quality Brass C210 may form rough edges during machining, complicating achieving a smooth finish.
Solution: Employ high-speed cutting with sharp tools and ensure proper lubrication to achieve smooth surfaces.
Work Hardening Brass C210 can undergo work hardening if machining conditions are not controlled properly.
Solution: Use moderate cutting speeds, sharp tools, and adequate coolant to prevent work hardening during machining.
Optimized Machining Strategies
Parameter | Recommendation | Rationale |
|---|---|---|
Tool Material | Carbide or ceramic tools | These materials offer superior wear resistance and enhanced cutting performance. |
Geometry | Positive rake, sharp edges | Improves chip flow and ensures a smoother surface finish. |
Cutting Speed | 150–250 m/min | Reduces heat buildup and minimizes material deformation. |
Feed Rate | 0.10–0.20 mm/rev | Ensures smooth cutting and minimizes burr formation. |
Coolant | Flood coolant or air blast | Reduces heat and enhances the surface finish of the parts. |
Brass C210 Cutting Parameters (ISO 513 Compliance)
Operation | Speed (m/min) | Feed (mm/rev) | Depth of Cut (mm) | Coolant Pressure (bar) |
|---|---|---|---|---|
Roughing | 150–200 | 0.15–0.20 | 2.0–3.0 | 25–35 |
Finishing | 200–250 | 0.05–0.10 | 0.5–1.0 | 30–50 |
Typical Machining Methods for Brass C210
Machining Process | Function and Benefit for Brass C210 |
|---|---|
Ideal for high-speed, precision machining of components like connectors and bushings in the electrical and automotive industries. | |
Suitable for creating slots, grooves, and complex shapes in parts like valves and fittings, common in plumbing and automotive applications. | |
Used for turning cylindrical parts such as bushings, gears, and connectors, typically in the automotive and industrial sectors. | |
Ideal for creating precise holes for fasteners and mechanical parts used in automotive and electrical applications. | |
Ensures precise internal machining for parts like bearings and bushings, commonly used in industrial and automotive systems. | |
Provides smooth finishes for parts that experience wear, such as gears and shafts, widely used in aerospace and automotive industries. | |
Ideal for producing complex, multi-featured parts used in aerospace and automotive industries. | |
Provides ultra-tight tolerances for components requiring high precision, used in the medical and aerospace industries. | |
Used for creating intricate features and fine details in automotive and industrial parts. |
Surface Treatment for Brass C210 CNC Parts
Electroplating: Enhances corrosion resistance and provides a shiny finish for electrical connectors and other components.
Polishing: Achieves a high-gloss finish for decorative parts and improves functionality.
Brushing: Creates a satin or matte finish for components exposed to frequent handling.
PVD Coating: Adds a durable coating that increases wear resistance, especially in parts that experience frequent friction.
Passivation: Improves the corrosion resistance of parts exposed to harsh chemicals.
Powder Coating: Provides a thick, protective finish ideal for parts exposed to UV light and harsh conditions.
Teflon Coating: Adds non-stick and chemical-resistant properties, ideal for mechanical applications.
Chrome Plating: Provides a glossy, durable coating that resists corrosion and enhances appearance.
Industry Applications of Brass C210
Aerospace Industry: Used for manufacturing connectors, bushings, and other high-stress parts in aerospace applications.
Electrical & Power: Ideal for electrical components like connectors, terminals, and other parts requiring high conductivity.
Automotive Industry: Commonly used in automotive applications, including connectors, bushings, and fasteners.
Medical Industry: Used for producing components in medical devices requiring high precision and reliability.
FAQs
How does Brass C210 compare to other brass alloys regarding strength and machinability?
What are the best surface treatments for Brass C210 to enhance its performance?
Can Brass C210 be used in high-temperature environments?
How does Brass C210 perform in marine applications?
What industries most commonly use Brass C210 for CNC machining?
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