ASME SB111 C70600 Copper Nickel Tube for Condenser , Heat Exchanger Application

ASME SB111 C70600 Copper Nickel Tube for Condenser, Heat Exchanger Application
 

ASME SB111 standard specifies the manufacturing process, material selection, quality control and other aspects of white copper seamless tube in detail, ensuring the reliability and stability of the product. At the same time, the standard also emphasizes the corrosion resistance of the product, and evaluates the corrosion resistance of seamless tubes in different environments through a series of strict test methods.

ASME SB111/ASTM B111 C70600 copper nickel tube is mainly composed of copper, nickel, iron and manganese. Among them, the nickel content is about 9.0%-11.0%, the iron content is between 1.0%-1.8%, the manganese content does not exceed 1.0%, the zinc content does not exceed 1.0%, and the lead content does not exceed 0.05%. Other elements such as phosphorus and carbon also have strict content limits.

ASME SB111 C70600 Copper Nickel Tube Chemical Composition

ASME SB111/ASTM B111 C70600 Copper Nickel Tube Mechanical properties:​

• Tensile strength: The tensile strength of ASME SB111 C70600 copper nickel tube is usually between 275MPa and 550MPa, depending on its heat treatment state and processing method. Higher tensile strength means that the alloy can resist breaking at a higher maximum stress when subjected to tensile force, so it is suitable for environments with high pressure.
• Yield strength: Yield strength is the maximum stress that a material can withstand before plastic deformation occurs. The yield strength of ASME SB111 C70600 copper nickel tube is usually between 105MPa and 350MPa, which is also affected by heat treatment and processing methods. This property ensures the stability of the material when subjected to stress.
• Elongation: The elongation of ASME SB111 C70600 copper nickel tube is generally between 20% and 40% (some say about 30%), showing good plasticity. This means that the alloy can undergo large plastic deformation without breaking when subjected to external force, and is suitable for cold working and shape change.
• Hardness: The Vickers hardness of ASME SB111 C70600 copper nickel tube is usually between 160HV and 210HV, indicating that it has good wear resistance and scratch resistance. Under the same conditions, the Brinell hardness of C70600 copper nickel tube is about 80HB to 150HB (some say about 150HB), which ensures its long-term stability in a strong wear environment.

ASME SB111 C70600 Copper Nickel Tube Tensile Requirements

 
ASME SB111 C70600 Copper Nickel Tube Application:

• Marine engineering: C70600 copper nickel tube has excellent corrosion resistance in seawater environment and is suitable for manufacturing key components of seawater desalination equipment. It is also widely used in ship components such as pipelines, cooling systems, seawater pumps, etc. These components need to operate in seawater environment for a long time. The seawater corrosion resistance of C70600 copper alloy ensures its long-term stability and reliability.
• Petroleum industry: Reactors, heat exchangers, evaporators and other equipment need to withstand high temperature, high pressure and highly corrosive media in the petrochemical production process. The excellent properties of C70600 copper nickel tube make it an ideal material for manufacturing these equipment; in corrosive media and high temperature and high pressure environments, C70600 copper nickel tube can be widely used in such as pipelines, valves and pump bodies, relying on stable performance to ensure the normal operation of petrochemical equipment.
• Aerospace: Aircraft engine parts such as turbine blades and combustion chambers need to operate in extreme high temperature and high pressure environments. The high temperature strength and corrosion resistance of C70600 copper nickel tube make it suitable for such applications. At the same time, the light weight, high strength and good corrosion resistance of C70600 copper nickel tube make it an ideal material for manufacturing satellite components.
• Food processing field: Such as brewing equipment, milk heaters, juice blenders and ice makers, the corrosion resistance and hygienic properties of C70600 copper nickel tube meet food safety and hygiene requirements.

Summary:

ASTM B111 C70600 (90-10 Cu-Ni) belongs to copper-nickel alloy (Cu-Ni), commonly known as 90-10 white copper. Thanks to the synergistic effect of nickel and iron, C70600 copper nickel tube can withstand uniform corrosion, pitting corrosion and crevice corrosion, and has excellent and comprehensive seawater corrosion resistance, which enables it to quickly adapt to occasions with high seawater flow rates. At the same time, C70600's resistance to ammonia stress corrosion cracking is far better than brass, and it has good thermal conductivity, strength and machinability. Its performance in all aspects is very close to C71500, but the cost is significantly lower, so the cost performance is relatively better, and an excellent balance is achieved between performance and cost.