Brass C23000
Introduction to Brass C23000
Brass C23000, also known as Admiralty Brass, is a copper-zinc alloy containing small amounts of tin and other elements like lead, making it highly resistant to corrosion, especially in seawater and other harsh environments. This alloy is designed to provide excellent durability and resist dezincification and corrosion in marine environments. Compared to other brass alloys, Brass C23000 is known for its combination of high strength, good machinability, and exceptional corrosion resistance. For precision machining, Brass C23000 is highly regarded for its ability to be easily shaped and formed with minimal tool wear.
Brass C23000 is commonly used in CNC machined parts such as marine hardware, pumps, valves, and heat exchangers. Its superior corrosion resistance and excellent mechanical properties make it ideal for industries like marine, automotive, and heat exchange systems requiring high-performance parts.
Chemical, Physical, and Mechanical Properties of Brass C23000
Chemical Composition (Typical)
Element | Composition Range (wt.%) | Key Role |
|---|---|---|
Copper (Cu) | 59.0–62.0% | Provides strength, conductivity, and corrosion resistance |
Zinc (Zn) | 37.0–40.0% | Enhances strength and material hardness |
Tin (Sn) | 0.5–1.0% | Improves corrosion resistance, especially in seawater |
Lead (Pb) | ≤0.5% | Improves machinability and reduces friction during machining |
Iron (Fe) | ≤0.5% | Enhances strength and wear resistance |
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 | 10% IACS at 20°C | ASTM B193 |
Coefficient of Expansion | 20 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 | 400–500 MPa | ASTM E8/E8M |
Yield Strength (0.2%) | 260–350 MPa | ASTM E8/E8M |
Elongation | 30–40% | ASTM E8/E8M |
Hardness | 60–80 HB | ASTM E10 |
Fatigue Strength | ~180 MPa | ASTM E466 |
Impact Resistance | Good | ASTM E23 |
Key Characteristics of Brass C23000
Superior Corrosion Resistance
Brass C23000 offers exceptional resistance to corrosion, particularly in seawater, making it an ideal choice for marine environments. The addition of tin enhances its resistance to dezincification, a common problem in marine environments.
Good Strength and Durability
With its excellent combination of strength and durability, Brass C23000 can withstand high mechanical stresses, making it suitable for components like valves, pumps, and mechanical parts used in marine and industrial applications.
Excellent Machinability
Brass C23000 is known for its excellent machinability, allowing it to be easily processed into intricate shapes and forms with high-speed CNC machining, reducing tool wear and improving overall productivity.
Wear Resistance
Thanks to its balanced alloy composition, Brass C23000 exhibits high wear resistance, which is especially beneficial for parts that experience constant friction, such as bushings and bearings.
Aesthetic Appeal
Brass C23000 has a golden-yellow color, which gives it an attractive finish for applications where appearance is important, such as decorative marine hardware and architectural components.
CNC Machining Challenges and Solutions for Brass C23000
Machining Challenges
Chip Formation Brass C23000 can produce short, brittle chips that can hinder machining operations if not managed correctly.
Solution: Use chip breakers and employ adequate coolant or air to clear chips during high-speed machining efficiently.
Tool Wear Although Brass C23000 offers good machinability, the alloy’s hardness can lead to tool wear over time, particularly during high-speed cutting.
Solution: Use carbide or ceramic tools, which provide superior wear resistance, to extend tool life and reduce wear during machining.
Surface Finish Quality Achieving a smooth surface finish can sometimes be challenging due to the tendency of Brass C23000 to form burrs during machining.
Solution: Use sharp, high-quality tools and appropriate cutting techniques and lubrication to achieve smooth finishes.
Work Hardening Brass C23000 may experience work hardening if excessive pressure or cutting speeds are applied during machining.
Solution: Maintain moderate cutting speeds, keep tools sharp, and use proper coolant to minimize the risk of work hardening.
Optimized Machining Strategies
Parameter | Recommendation | Rationale |
|---|---|---|
Tool Material | Carbide or ceramic tools | These materials offer high wear resistance and excellent cutting performance. |
Geometry | Positive rake, sharp edges | Improves chip flow and ensures smoother surface finishes. |
Cutting Speed | 150–250 m/min | Reduces heat generation and prevents material deformation. |
Feed Rate | 0.10–0.20 mm/rev | Ensures smooth cutting and reduces burr formation. |
Coolant | Flood coolant or air blast | Helps in heat dissipation and improves surface finish. |
Brass C23000 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 | 2.0–3.5 | 25–35 |
Finishing | 200–250 | 0.05–0.10 | 0.5–1.0 | 30–50 |
Typical Machining Methods for Brass C23000
Machining Process | Function and Benefit for Brass C23000 |
|---|---|
Ideal for high-speed, precision machining of components like marine hardware, bushings, and valves. | |
Suitable for creating slots, grooves, and complex shapes in components such as fittings and valves. | |
Used for turning cylindrical parts such as bushings, gears, and mechanical components in industrial and marine applications. | |
Ideal for creating precise holes for fasteners and mechanical parts in marine and industrial environments. | |
Ensures precision internal machining for parts such as bearings and bushings used in marine systems. | |
Provides smooth finishes for parts exposed to wear and tear, such as gears and shafts in marine applications. | |
Ideal for producing complex, multi-featured parts for marine, oil, and gas industries. | |
Provides ultra-tight tolerances for high-performance components used in aerospace and medical devices. | |
Used for creating intricate features and fine details in parts such as connectors and switches for industrial uses. |
Surface Treatment for Brass C23000 CNC Parts
Electroplating: Enhances corrosion resistance and provides a shiny finish for marine connectors and other components.
Polishing: Achieves a high-gloss finish for decorative parts and improves their functionality.
Brushing: Creates satin or matte finishes for components exposed to frequent handling in marine and industrial environments.
PVD Coating: Adds a durable coating that increases wear resistance and extends the life of marine components.
Passivation: Improves corrosion resistance, especially for components exposed to aggressive 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 the appearance of components.
Industry Applications of Brass C23000
Aerospace Industry: Used for manufacturing high-strength components such as connectors and fittings subjected to high stresses.
Electrical & Power: Ideal for electrical components requiring high conductivity and durability.
Automotive Industry: Commonly used in automotive applications such as connectors, bushings, and fittings.
Marine Industry: Highly suitable for marine hardware and components exposed to seawater and other corrosive elements.
FAQs
How does Brass C23000 compare to other alloys regarding strength and corrosion resistance?
What are the best surface treatments for Brass C23000 to enhance its performance?
Can Brass C23000 be used in high-temperature applications?
How does Brass C23000 perform in marine environments compared to other alloys?
What industries most commonly use Brass C23000 for CNC machining?
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