Composition
C79200 is a high-performance white cup alloy primarily composed of copper (Cu), nickel (Ni), zinc (Zn), and minor trace elements. Its typical composition is approximately 60%-65% copper, 15%-20% nickel, and 15%-20% zinc. Trace amounts of manganese (Mn) or iron (Fe) may be added to optimize performance. This alloy achieves excellent overall performance through a precise composition and is widely used in precision engineering and corrosion resistance applications.
Physical and Mechanical Properties
C79200 white cup alloy exhibits excellent mechanical strength and good ductility. Its tensile strength typically ranges from 500-700 MPa, its yield strength can reach 300-450 MPa, and its elongation remains within the 10%-25% range. Furthermore, this alloy has moderate hardness and is easily machined and formed, making it suitable for both cold and hot working. While its thermal and electrical conductivity are slightly lower than those of pure copper, they still meet most industrial requirements.
Corrosion Resistance and Applications
Due to its high nickel and zinc content, C79200 alloy exhibits exceptional corrosion resistance, particularly in seawater, acidic environments, and industrial atmospheres. A dense oxide film forms on its surface, further slowing the corrosion process. Therefore, this material is often used in applications requiring high corrosion resistance, such as marine components, chemical equipment, heat exchangers, and precision instrument components.
Processing and Welding Properties
C79200 alloy exhibits excellent machinability and can be precisely machined using processes such as turning, milling, and stamping. It is suitable for welding using various methods, including argon arc welding and resistance welding, but careful control of heat input is required to avoid intergranular corrosion. Furthermore, its excellent polishing properties enable a smooth and delicate surface finish, making it suitable for decorative applications.
C79200 white copper alloy, with its balanced composition, excellent mechanical properties, and outstanding corrosion resistance, has become a key material in the industrial sector. Whether for high-strength structural parts or critical components in corrosion-resistant environments, this alloy provides reliable solutions to meet diverse engineering needs.
why choose us
Professional copper pipe supplier
The company has a cluster of leading copper processing production lines in China, including:
German imported precision copper tube production line (annual output of 30,000 tons)
Japanese technology copper foil rolling line (thinnest up to 6μm)
Fully automatic copper bar continuous extrusion line
Intelligent copper sheet and strip finishing mill unit
Digitalized control and management of the whole production process is realized through MES system, and the dimensional accuracy of the products can reach ±0.01mm.
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.
Customer visits
GNEE participated in the exhibition
