C27200 Brass Bar: High-Quality Copper Alloy for Industrial and Mechanical Applications
2026-03-24
C27200 brass bar is a high-leaded copper-zinc alloy with excellent machinability, corrosion resistance, and moderate strength. Ideal for valves, fittings, electrical connectors, marine equipment, and precision mechanical components, it ensures durability, easy fabrication, and reliable performance in industrial and mechanical applications.
Introduction to C27200 Brass Bar
C27200 brass bar is a widely used copper-zinc alloy, also known as high-leaded yellow brass. This material combines excellent machinability, corrosion resistance, and mechanical strength, making it ideal for industrial, electrical, and mechanical applications. The C27200 designation follows ASTM and JIS standards, ensuring consistent chemical composition and performance across different batches.
Material Composition and Properties
C27200 brass consists primarily of copper (approximately 61–63%), zinc (approximately 35–37%), and lead (around 2.5–3.5%). The high lead content enhances machinability, allowing precise cutting, threading, and forming with minimal tool wear. In addition, C27200 brass offers good corrosion resistance in freshwater, air, and certain chemical environments, making it suitable for valves, fittings, and marine applications. Its mechanical properties include moderate tensile strength, excellent ductility, and adequate hardness for structural and functional components.
Mechanical Performance and Machinability
One of the key advantages of C27200 brass bar is its exceptional machinability. The leaded structure acts as a lubricant during machining, enabling smooth, chip-free cutting and high dimensional accuracy. This makes it particularly suitable for components requiring precise tolerances, such as valve stems, pump parts, and electrical connectors. Its balance of strength and ductility ensures reliable performance in mechanical systems while resisting deformation under moderate loads.
Surface Finish and Fabrication
C27200 brass bars can be supplied in various forms, including hot-rolled, cold-rolled, and precision-turned bars. These bars provide smooth surface finishes, uniform dimensions, and excellent workability for further processing such as machining, turning, milling, or polishing. The material is also compatible with welding, soldering, and brazing, expanding its application potential in complex assemblies.
Applications of C27200 Brass Bar
C27200 brass bar is widely used in industrial, mechanical, and decorative applications due to its combination of machinability, strength, and corrosion resistance:
- Valves, fittings, and pumps for fluid systems
- Electrical connectors, terminals, and hardware components
- Marine and freshwater equipment exposed to mild corrosion
- Precision mechanical parts requiring accurate machining
- Decorative architectural elements and hardware
The material’s versatility makes it a preferred choice for engineers and manufacturers seeking reliable, high-performance copper alloys.
Corrosion Resistance and Durability
C27200 brass exhibits strong resistance to corrosion in air, freshwater, and mildly corrosive chemical environments. Its durability ensures long service life, even in components exposed to mechanical wear and environmental stress. The material’s stability and corrosion resistance reduce maintenance costs and extend the operational life of assemblies and machinery.
Conclusion
C27200 brass bar is a high-quality, leaded brass alloy offering superior machinability, corrosion resistance, and mechanical performance. Its versatility, reliability, and ease of fabrication make it ideal for industrial, mechanical, electrical, and marine applications. Engineers and manufacturers benefit from its precision, durability, and adaptability in producing high-quality components for demanding environments.
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