C71500 copper-nickel alloy, copper content, and tensile strength - Knowledge

Standards: ASTM B111M-1992, B122-1990, B151M-19889, B466M-1986 (1992 and 1993 editions) Name: 70-30 copper-nickel alloy

Characteristics and Applications

C71500 white copper has the same properties and uses as C70600, with excellent cold and hot workability. C71500 white copper is primarily used for condenser tubes, distillation tubes, and heat exchanger casings.

Chemical Composition

Copper + Alloying Elements (Cu): ≥99.5%; Copper + Silver (Cu): ≤65.5%; Lead (Pb): ≤0.05%; Iron (Fe): 0.40-1.0%; Zinc (Zn): ≤1.0%; Nickel (Ni): 29.0-33.0%; Manganese (Mn): ≤1.0%; Other Elements: Note: When used for welding and upon request by the ordering party, the Zn content should be no greater than 0.50%, the Pb content no greater than 0.02%, P ≤ 0.02%, and C ≤ 0.05%.

Advantages

C71500 seamless copper-nickel alloy pipe utilizes pure copper with nickel added to significantly improve strength, corrosion resistance, hardness, electrical resistance, and thermoelectric properties, while reducing the temperature coefficient of resistivity. Therefore, compared with other copper alloys, white copper has exceptionally good mechanical and physical properties, good ductility, high hardness, beautiful color, corrosion resistance, and deep drawing performance. It is widely used in shipbuilding, petrochemical industry, electrical appliances, instruments, medical equipment, daily necessities, handicrafts and other fields, and is also an important resistor and thermocouple alloy.

why choose us

Professional copper pipe supplier

As a professional enterprise dedicated to global copper product trade since 2008, 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.