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C26100 copper pipe, commonly referred to as cartridge brass, is a high-strength, highly ductile copper-zinc alloy with excellent corrosion resistance and workability. With a higher zinc content than pure copper, it offers enhanced mechanical properties while maintaining good thermal and electrical conductivity.
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Chemical Composition of C26100 Copper Pipe
Copper (Cu): 68.5 – 70.0%
Zinc (Zn): Balance (approximately 30%)
Other Elements: ≤ 0.05% (small amounts of lead, iron, or other impurities)
Key Properties of C26100 Copper Pipe
High Ductility & Plasticity: Can be easily drawn, bent, or formed, making it ideal for deep drawing applications.
Good Strength: Stronger than pure copper but retains enough flexibility for various industrial applications.
Corrosion Resistance: Stable in general atmospheric conditions and resistant to freshwater corrosion. However, prolonged exposure to ammonia or chlorides can lead to stress corrosion cracking (SCC).
Excellent Machinability: Can be efficiently cut, drilled, or shaped with conventional machining processes.
Weldability & Solderability: Compatible with most welding and brazing techniques, allowing for secure joint connections.
Good Thermal & Electrical Conductivity: While lower than pure copper, it still provides effective heat and electrical transfer.
Common Applications of C26100 Copper Pipe
C26100 copper pipe is widely used in industries that require durability, workability, and corrosion resistance, such as:
Plumbing & HVAC Systems: Used for water supply lines, heating systems, and refrigerant piping.
Ammunition Casings: Commonly used for bullet casings due to its ability to withstand pressure without deformation.
Heat Exchangers & Condensers: Suitable for applications requiring efficient heat transfer and corrosion resistance.
Automotive & Marine Components: Utilized in fuel lines, hydraulic systems, and marine fittings due to its mechanical strength.
Architectural & Decorative Applications: Employed in handrails, trim, and artistic designs for its aesthetic appeal and durability.
Considerations for Use
Stress Corrosion Cracking (SCC): Avoid prolonged exposure to ammonia, chlorides, or highly humid environments to prevent cracking.
Regular Inspection & Maintenance: Ensuring periodic checks can help extend the lifespan of the material.
Proper Joining Techniques: Use appropriate welding, soldering, or brazing methods to maintain structural integrity.
Comparison to Similar Brass Alloys
|
Property |
C26100 (Cartridge Brass) |
C26000 (Cartridge Brass) |
C26800 (Yellow Brass) |
|
Copper Content |
68.5 – 70.0% |
68.5 – 71.5% |
64.0 – 68.0% |
|
Zinc Content |
~30% |
~30% |
~32 – 36% |
|
Strength |
High |
Moderate to High |
Moderate |
|
Ductility |
Excellent |
Excellent |
Good |
|
Corrosion Resistance |
Good (SCC risk) |
Good (SCC risk) |
Moderate |
Conclusion
C26100 copper pipe is a versatile and reliable material known for its high strength, excellent ductility, and good corrosion resistance. Its widespread use in plumbing, heat exchangers, ammunition, and industrial piping demonstrates its adaptability across multiple sectors. While it is highly formable and machinable, users should take precautions against stress corrosion cracking in aggressive environments.
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