C83600 Leaded Red Brass
Introduction to C83600 Leaded Red Brass
C83600 Leaded Red Brass is a copper alloy containing copper, tin, and small amounts of lead, zinc, and other trace elements. This alloy stands out for its excellent machinability, strength, and superior corrosion resistance, especially in harsh environments such as water, steam, and chemical exposures. Compared to other brass alloys, C83600 offers the perfect balance of ease of machining and performance, making it ideal for parts requiring tight tolerances and extended service life. For precision machining, C83600 Leaded Red Brass is a great choice, ensuring smooth cutting and minimal tool wear.
C83600 Leaded Red Brass is widely used in CNC machined parts such as plumbing fittings, valves, pumps, and electrical connectors, where strength and corrosion resistance are essential. Its excellent machinability makes it ideal for producing complex shapes and intricate features required in manufacturing high-performance components across various industries.
Chemical, Physical, and Mechanical Properties of C83600 Leaded Red Brass
Chemical Composition (Typical)
Element | Composition Range (wt.%) | Key Role |
|---|---|---|
Copper (Cu) | 85.0–90.0% | Provides strength, conductivity, and corrosion resistance |
Tin (Sn) | 5.0–6.5% | Enhances strength and corrosion resistance |
Lead (Pb) | 1.5–2.5% | Improves machinability and reduces friction during machining |
Zinc (Zn) | ≤2.0% | Strengthens the alloy and improves hardness |
Physical Properties
Property | Value (Typical) | Test Standard/Condition |
|---|---|---|
Density | 8.4 g/cm³ | ASTM B311 |
Melting Point | 900–950°C | ASTM E29 |
Thermal Conductivity | 70 W/m·K at 20°C | ASTM E1952 |
Electrical Conductivity | 12% 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 | 110 GPa | ASTM E111 |
Mechanical Properties (Annealed Temper)
Property | Value (Typical) | Test Standard |
|---|---|---|
Tensile Strength | 350–400 MPa | ASTM E8/E8M |
Yield Strength (0.2%) | 220–250 MPa | ASTM E8/E8M |
Elongation | 25–30% | ASTM E8/E8M |
Hardness | 60–80 HB | ASTM E10 |
Fatigue Strength | ~180 MPa | ASTM E466 |
Impact Resistance | Good | ASTM E23 |
Key Characteristics of C83600 Leaded Red Brass
Improved Machinability
C83600 Leaded Red Brass is a free-machining alloy, meaning it can be cut, drilled, and shaped easily, making it ideal for high-speed CNC machining operations. The presence of lead significantly improves machinability, ensuring smooth operations and minimal downtime.
Corrosion Resistance
This alloy offers excellent resistance to corrosion, particularly in water and steam environments. However, it is unsuitable for prolonged seawater exposure, making it ideal for plumbing, water systems, and electrical connection applications.
Good Strength and Durability
C83600 Leaded Red Brass offers a good balance of strength and toughness, allowing it to perform well in components that are exposed to mechanical stress, such as valves, pumps, and other mechanical parts.
Excellent Formability
C83600 is an easy-to-form material that can be bent, stamped, or machined into intricate shapes without cracking. This makes it versatile for producing parts requiring complex designs and geometries.
Aesthetic Appeal
With its reddish color and bright finish, C83600 Leaded Red Brass is often used in applications where appearance is important, such as decorative hardware and trim pieces.
CNC Machining Challenges and Solutions for C83600 Leaded Red Brass
Machining Challenges
Chip Formation While C83600 is a free-machining alloy, it can still produce long chips that can obstruct the machining process.
Solution: Use chip breakers to manage chip formation and adjust feed rates to avoid chip buildup. Use coolant to assist with chip removal.
Tool Wear Despite its good machinability, C83600 can cause tool wear, particularly during high-speed operations.
Solution: Use high-performance carbide or ceramic tools to extend tool life and reduce wear during CNC machining.
Surface Finish Quality Achieving a smooth, fine surface finish may be challenging due to the hardness of the alloy, which can lead to rough edges.
Solution: Use sharp tools, apply adequate lubrication, and reduce cutting speeds to achieve smoother finishes.
Work Hardening C83600 Leaded Red Brass can experience work hardening, especially when machining at higher speeds.
Solution: Moderate cutting speeds, sharp tools, and the application of sufficient coolant can reduce work hardening.
Optimized Machining Strategies
Parameter | Recommendation | Rationale |
|---|---|---|
Tool Material | Carbide or ceramic tools | Carbide and ceramic tools provide high wear resistance and better 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. |
C83600 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 C83600 Leaded Red Brass
Machining Process | Function and Benefit for C83600 Leaded Red Brass |
|---|---|
Ideal for high-speed, precision machining of components like valves, bushings, and connectors. | |
Suitable for creating slots, grooves, and complex shapes in components like gears and bushings. | |
Used for turning cylindrical parts such as valves, bushings, and mechanical components. | |
Ideal for creating precise holes for fasteners and other components. | |
Ensures precision internal machining for components like 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 in aerospace, automotive, 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 electrical connectors and mechanical components. |
Surface Treatment for C83600 Leaded Red Brass CNC Parts
Electroplating: Enhances corrosion resistance and provides a shiny finish for parts such as connectors and valves.
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, such as plumbing components.
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, which are ideal for mechanical applications.
Chrome Plating: Provides a glossy, durable coating that resists corrosion and enhances the appearance of components.
Industry Applications of C83600 Leaded Red Brass
Aerospace Industry: Used for manufacturing high-strength components such as bushings, bearings, 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, bushings, and other high-performance components.
Plumbing Industry: Perfect for producing plumbing fittings, faucets, and valves due to its corrosion resistance.
FAQs
What are the key considerations when selecting C83600 Leaded Red Brass for CNC machining?
How does the machining speed affect the surface finish of C83600 Leaded Red Brass?
Can C83600 Leaded Red Brass be effectively used for high-precision CNC machined parts?
What are the common challenges faced during CNC machining of C83600 Leaded Red Brass?
How does the cost of CNC machining C83600 Leaded Red Brass compare to other copper alloys?
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