C63200 Leaded Phosphor Bronze
Introduction to C63200 Leaded Phosphor Bronze
C63200 Leaded Phosphor Bronze is a copper-tin alloy that contains small amounts of phosphorus and lead, offering a unique blend of high strength, superior wear resistance, and excellent machinability. Compared to other copper alloys, C63200 is known for its excellent performance in applications that require high load-bearing capacity and wear resistance. Adding lead improves its machinability, making it ideal for high-speed CNC machining. For precision machining, C63200 Leaded Phosphor Bronze is an optimal choice for manufacturing complex and durable components.
C63200 Leaded Phosphor Bronze is widely used in CNC machined parts such as bearings, bushings, gears, and electrical connectors, where both strength and machinability are required. Its excellent wear and corrosion resistance make it perfect for high-performance applications in the automotive, aerospace, and industrial machinery industries.
Chemical, Physical, and Mechanical Properties of C63200 Leaded Phosphor Bronze
Chemical Composition (Typical)
Element | Composition Range (wt.%) | Key Role |
|---|---|---|
Copper (Cu) | 85.0–88.0% | Provides strength, conductivity, and corrosion resistance |
Tin (Sn) | 5.0–7.0% | Enhances strength and corrosion resistance |
Phosphorus (P) | 0.03–0.35% | Improves wear resistance and increases material strength |
Lead (Pb) | 1.5–3.0% | Improves machinability and reduces friction during machining |
Physical Properties
Property | Value (Typical) | Test Standard/Condition |
|---|---|---|
Density | 8.8 g/cm³ | ASTM B311 |
Melting Point | 950–1050°C | ASTM E29 |
Thermal Conductivity | 60 W/m·K at 20°C | ASTM E1952 |
Electrical Conductivity | 15% IACS at 20°C | ASTM B193 |
Coefficient of Expansion | 18 µm/m·°C | ASTM E228 |
Specific Heat Capacity | 380 J/kg·K | ASTM E1269 |
Elastic Modulus | 110 GPa | ASTM E111 |
Mechanical Properties (Annealed Temper)
Property | Value (Typical) | Test Standard |
|---|---|---|
Tensile Strength | 650–750 MPa | ASTM E8/E8M |
Yield Strength (0.2%) | 400–500 MPa | ASTM E8/E8M |
Elongation | 15–25% | ASTM E8/E8M |
Hardness | 90–110 HB | ASTM E10 |
Fatigue Strength | ~200 MPa | ASTM E466 |
Impact Resistance | Good | ASTM E23 |
Key Characteristics of C63200 Leaded Phosphor Bronze
Improved Machinability
The addition of lead in C63200 improves its machinability, allowing for easier and faster CNC machining. This makes it ideal for high-speed operations and for producing intricate parts with minimal tool wear.
Excellent Wear Resistance
C63200 Leaded Phosphor Bronze has exceptional wear resistance, making it ideal for parts subjected to friction, such as bearings, bushings, and gears.
Good Corrosion Resistance
C63200 offers good resistance to corrosion, particularly in water and atmospheric conditions, making it suitable for industrial and marine applications.
High Strength and Durability
This alloy offers high tensile strength, which makes it resistant to mechanical stresses and ideal for load-bearing applications, including gears and heavy-duty components.
Fatigue Resistance
C63200 is resistant to fatigue, which means it can withstand repetitive stress without breaking down, making it suitable for parts like springs and other components exposed to cyclic loading.
CNC Machining Challenges and Solutions for C63200 Leaded Phosphor Bronze
Machining Challenges
Chip Formation Like many other bronze alloys, C63200 can produce long, stringy chips when machined at high speeds, which can disrupt operations.
Solution: Use chip breakers and control feed rates. Air or coolant is recommended to help clear chips effectively.
Tool Wear While C63200 has excellent machinability, its hardness can still cause tool wear over time, particularly in high-speed operations.
Solution: Use carbide or ceramic cutting tools, which offer longer tool life and better wear resistance during machining.
Surface Finish Quality Achieving a fine surface finish can be difficult, especially in high-speed cutting, which can cause rough edges.
Solution: Use sharp tools, apply adequate lubrication, and use slower speeds for finer finishes.
Work Hardening C63200 can experience work hardening if too much pressure or speed is applied during machining.
Solution: Use moderate cutting speeds, ensure sharp tools, and apply coolant to reduce work hardening.
Optimized Machining Strategies
Parameter | Recommendation | Rationale |
|---|---|---|
Tool Material | Carbide or ceramic tools | Carbide and ceramic tools offer superior wear resistance and 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. |
C63200 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 C63200 Leaded Phosphor Bronze
Machining Process | Function and Benefit for C63200 Leaded Phosphor Bronze |
|---|---|
Ideal for high-speed, precision machining of components like electrical connectors and bushings. | |
Suitable for creating slots, grooves, and complex shapes in components such as bushings and gears. | |
Used for turning cylindrical parts such as gears, bushings, and mechanical components. | |
Ideal for creating precise holes for fasteners and other mechanical parts. | |
Ensures precision internal machining for components such as bearings and bushings. | |
Provides smooth finishes for parts exposed to wear and tear, such as gears and shafts. | |
Ideal for producing complex, multi-featured parts for aerospace and industrial sectors. | |
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 mechanical components. |
Surface Treatment for C63200 Leaded Phosphor Bronze CNC Parts
Electroplating: Enhances corrosion resistance and provides a shiny finish for electrical connectors and mechanical parts.
Polishing: Achieves a high-gloss finish for decorative parts and improves their functionality.
Brushing: Creates satin or matte finishes for parts exposed to frequent handling in industrial and electrical applications.
PVD Coating: Adds a durable coating that increases wear resistance and extends the life of mechanical components.
Passivation: Improves corrosion resistance, especially for parts 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 C63200 Leaded Phosphor Bronze
Aerospace Industry: Used for manufacturing high-strength components such as springs, bushings, and connectors.
Electrical & Power: Ideal for electrical components requiring high conductivity and durability, including connectors and terminals.
Automotive Industry: Commonly used in automotive applications such as gears, bearings, and other high-performance components.
Marine Industry: Highly suitable for marine hardware and components exposed to seawater and other corrosive elements.
FAQs
How does C63200 Leaded Phosphor Bronze compare to other copper alloys regarding wear resistance?
What are the best surface treatments for C63200 Leaded Phosphor Bronze to enhance performance?
Can C63200 Leaded Phosphor Bronze be used in high-temperature applications?
How does C63200 perform in marine environments compared to other alloys?
What industries most commonly use C63200 Leaded Phosphor Bronze for CNC machining?
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