ASTM B111 C44500 seamless copper tubing is a brass alloy commonly used in the manufacture of mechanical parts and decorative items. It is composed of copper, tin, and a small amount of nickel.
Composition of ASTM B111 C44500 copper pipe for hot water
| Element | Minimum (%) | Maximum (%) | Purpose / Effect |
|---|---|---|---|
| Copper (Cu) | 70.0 | 73.0 | Base Element. Provides fundamental corrosion resistance and formability. |
| Tin (Sn) | 0.8 | 1.2 | Increases strength and improves resistance to corrosion and dezincification. |
| Phosphorus (P) | 0.02 | 0.10 | Corrosion Inhibitor. Acts as a dezincification inhibitor (replaces Arsenic). Also acts as a deoxidizer during melting. |
| Lead (Pb) | - | 0.07 | Impurity limit. Improves machinability if present at higher levels in other alloys, but kept low here. |
| Iron (Fe) | - | 0.06 | Impurity limit. |
| Antimony (Sb) | - | 0.005 | Impurity limit. |
| Bismuth (Bi) | - | 0.002 | Impurity limit. |
| Zinc (Zn) | Balance | Primary alloying element. Lowers cost, increases strength. |
Performance Advantages of ASTM B111 C44500 Refrigeration Copper Tubing
Mechanical Properties
It has high strength and can maintain stable and reliable performance under high loads, making it suitable for manufacturing high-load mechanical parts and tools and equipment.
It has moderate strength and hardness, which enables good machinability and formability during manufacturing, and excellent cold workability.
Corrosion Resistance
It has excellent corrosion resistance, and the addition of tin makes it adaptable to seawater environments. It can be used in the manufacture of equipment for use in atmospheric, freshwater, and seawater environments, for example, in the manufacture of ship parts.




Processability
It has excellent machinability and can be milled, drawn, turned, and forged, allowing manufacturers to create sculptures or decorative items of various shapes and sizes. It can be formed into complex shapes and precision components, and is easily welded and cast.
Its excellent fluidity and weldability make it very useful in the manufacture of metal products.
Economical
Its relatively low cost does not necessarily mean inferior quality. In engineering, using C44500 tin brass can be more cost-effective than other materials while still providing excellent performance.
why choose us

Professional copper pipe supplier
As a professional enterprise dedicated to global copper product, GNEE Metal Group deeply recognizes the quality and responsibility embodied in the ASTM B111 standard. This standard not only specifies chemical composition and mechanical properties but also represents a comprehensive quality commitment spanning manufacturing processes to testing and verification. GNEE solemnly assures global customers that every ASTM B111-standard condenser tube and copper alloy tubing we supply will strictly adhere to its requirements for seamless manufacturing, annealing treatment, eddy current testing, and various mechanical performance tests.
Contact us today for a quotation:sales@gneesteel.com
Packaging and shipping
GNEE offers professional packaging for exported copper pipes. First, we apply anti-rust oil and plastic film to prevent oxidation. Then, we securely strap with steel straps and add corner protectors. Finally, we place the pipes on wooden pallets and reinforce them with iron or wooden boxes, ensuring they are moisture-proof and impact-resistant during ocean transport, while facilitating easy loading and unloading. All packaging meets export standards.





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