B10 white copper pipe is an alloy pipe with copper-nickel as the main component, the nickel content is about 10%, it has the characteristics of high strength, corrosion resistance, good thermal conductivity, etc. It is suitable for marine engineering, energy and chemical industry. The following is a summary of its core information:
I. Material Characteristics
Composition and structure
The main components are copper (residual), nickel (9%-11%), with a small amount of iron, manganese and other elements to enhance corrosion resistance.
Nickel and copper form an alpha single-phase solid solution with a dense microstructure and uniform grain size.
Performance Advantages
Corrosion resistance: outstanding resistance to scouring corrosion in seawater and weak acid/alkaline media, and formation of oxide film on the surface to retard corrosion.
Mechanical properties: tensile strength of 500-650 MPa after cold working, good ductility, suitable for complex molding process.
Thermal conductivity: thermal conductivity of 50-70 W/(m-K), suitable for heat exchange equipment.
Second, application fields
Ship and ocean engineering: seawater cooling tube, condenser tube, submarine cable sheath.
Energy and power: thermal/nuclear power plant condenser tube, heat exchanger.
Chemical equipment: evaporator, distillation tower lining tube, weak acid and alkali corrosion resistance.
Refrigeration HVAC: condenser tube, low temperature connection tube, both thermal conductivity and low temperature toughness.
Aerospace: manufacturing turbine blades, engine thermal conductivity components, high temperature oxidation resistance.
Medical devices: precision surgical tools and corrosion-resistant surgical equipment.
Third, the production process
Melting and casting processing
Copper-nickel alloys are cast into billets after medium frequency melting and hot extrusion molding.
Cold Processing
Multi-pass cold rolling or drawing, combined with intermediate annealing (600-750 ℃) to eliminate work hardening.
Surface treatment
Pickling to remove the oxide layer, surface passivation or coated with antifouling coating to enhance corrosion resistance.
IV. Technical standards and market information
Quality standard
Conform to GB/T 8890, ASTM B466 and other standards, certified by DNV/ABS classification society.
Market Price
The price varies significantly with different specifications: the common offer range is about 59.9-180 RMB/kg, which is affected by wall thickness, length and purchase quantity.
LSAW pipes can be used in low and medium pressure scenarios instead of seamless pipes, reducing manufacturing costs.
V. Selection considerations
Media matching: B10 material is preferred for high salt/chlorine ion environments.
Pressure requirements: Seamless pipe is recommended for high pressure scenarios, welded pipe can be used for medium and low pressure.
Welding process: brazing or inert gas shielded welding is recommended to ensure the strength of the weld.
CuNi10Fe1Mn: German DIN standard designation, emphasizing the alloy ratio of copper, nickel, iron and manganese.
CW352H: corresponds to the German material number, commonly used in the manufacture of precision tubes.
Condensate tube/heat exchange tube: based on the advantages of thermal conductivity, used in power plant condensers, air conditioning systems and other scenarios.
Seamless/Welded White Copper Tubes: categorized by production process, seamless tubes are used in high-pressure systems, and welded tubes are used in low- and medium-pressure scenarios.
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