The ASTM B111 C71500 Cu70Ni30 Copper Alloy Steel Seamless Tube is specifically designed for seawater applications in heat exchangers, condensers, and cooling systems. This tube is made from a copper-nickel alloy (Cu70Ni30), which contains 70% copper and 30% nickel, offering excellent corrosion resistance, particularly in seawater and marine environments. The seamless construction ensures a high-quality, durable solution for marine cooling systems, desalination plants, and industrial cooling.
Key Features
1. Base Tube Material: C71500 Copper-Nickel Alloy (Cu70Ni30)
C71500 is a copper-nickel alloy that contains 70% copper and 30% nickel. This alloy offers outstanding resistance to seawater corrosion, pitting, and crevice corrosion, making it ideal for use in marine environments and seawater-cooled systems.
The Cu70Ni30 alloy provides excellent thermal conductivity and strength, which makes it suitable for high-pressure and high-temperature applications, including heat exchangers and cooling systems in harsh environments.
2. Seamless Tube
The seamless construction eliminates welding seams, ensuring uniformity in wall thickness and a smooth inner surface, which promotes better fluid flow and improves heat exchange efficiency.
This design ensures reliability and resistance to mechanical stress in high-pressure environments, providing enhanced durability and performance.
3. Application: Seawater Heat Exchanger Tube
The C71500 Cu70Ni30 seamless tube is used primarily in seawater-cooled systems, heat exchangers, and condensers where corrosion resistance and high thermal conductivity are critical.
It is ideal for marine cooling systems, desalination plants, power generation, chemical processing, and HVAC systems.
Chemical Composition
| Element | C71500 Cu70Ni30 Copper-Nickel Alloy (Base Tube) |
|---|---|
| Copper (Cu) | 70% |
| Nickel (Ni) | 30% |
| Iron (Fe) | ≤ 1.0% |
| Manganese (Mn) | ≤ 1.0% |
| Phosphorus (P) | ≤ 0.04% |
| Sulfur (S) | ≤ 0.03% |
Mechanical Properties
| Property | C71500 Cu70Ni30 Copper-Nickel Alloy |
|---|---|
| Tensile Strength | 310 - 550 MPa |
| Yield Strength | ≥ 180 MPa |
| Elongation | ≥ 30% |
| Hardness | Brinell hardness: 90 - 130 HB |
Advantages of C71500 Copper-Nickel Alloy Tube
Exceptional Corrosion Resistance:
The Cu70Ni30 alloy provides excellent resistance to seawater corrosion, pitting, and crevice corrosion, making it ideal for marine cooling systems and desalination plants.
The alloy also offers resistance to biofouling, ensuring a longer lifespan in harsh, high-salinity environments.
High Thermal Conductivity:
C71500 offers excellent thermal conductivity, improving the efficiency of heat exchangers and condensers by providing a fast, reliable means of heat transfer between fluids.
Durability and Strength:
The alloy's high strength and ductility make it durable and capable of withstanding high-pressure environments, such as those found in heat exchangers and seawater cooling systems.
Seamless Construction:
The seamless tube construction ensures better fluid flow, uniform thickness, and higher pressure resistance, all of which contribute to the overall reliability and longevity of the heat exchanger or cooling system.
Versatility:
C71500 copper-nickel alloy tubes are used in marine, chemical, petrochemical, and HVAC industries for heat exchange purposes, providing a reliable solution for a wide range of seawater-cooled systems.
Applications
Marine Cooling Systems: Used in seawater-cooled heat exchangers, cooling towers, and marine condensers.
Seawater Desalination Plants: Ideal for reverse osmosis systems and seawater desalination applications.
Heat Exchangers: Applied in industrial cooling systems, power generation, and chemical processing.
Condensers: Used in air-conditioning and HVAC systems, especially where high seawater corrosion resistance is required.
The C71500 Copper-Nickel Alloy Seamless Tube (ASTM B111) is a top choice for heat exchangers, marine cooling systems, and seawater desalination plants. With outstanding corrosion resistance, high thermal conductivity, and reliability in high-pressure and high-temperature environments, this seamless tube is ideal for demanding applications in marine, chemical, and power generation systems.
Copper products that GNEE can provide
|
Material |
T1,T2,C10100,C10200,C10300,C10400,C10500,C10700,C10800,C10910,C10920,TP1,TP2, C10930,C11000,C11300,C11400,C11500,C11600,C12000,C12200,C12300,TU1,TU2,etc |
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Shape |
Round, square, rectangular, etc. |
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Length |
3m,5.8m, 6m, 11.8m, 12m, or as required. |
|
Wall Thickness |
0.2mm-120mm |
|
Hardness |
1/16 hard,1/8 hard,3/8 hard,1/4 hard,1/2hard,full hard,soft,etc |
|
Ultimate Strength (≥ MPa) |
460-680 |
|
Cu (Min) |
99% |
|
Surface |
Mill,polished,bright,oiled,hair line,brush,mirror,sand blast,or as required. |
|
Specifications |
Round：Wall thickness: 0.2mm~120mm,Outside Diameter: 2mm~910mm Square：Wall thickness: 0.2mm~120mm, Size: 2mm*2mm~1016mm*1016mm |
|
Package |
Export standard package: bundled wooden box, suit for all kinds of transport,or be required |
|
Standard
|
ASTMB152,B187,B133,B301,B196,B441,B465,JISH3250-2006,
GB/T4423-2007,etc |
|
Material
|
C10100,C10200,C10300,C10400,C10500,C10700,C10800,C10910,C10920,
C10930,C11000,C11300,C11400,C11500,C11600,C12000,C12200,C12300, C12500,C14200,C14420,C14500,C14510,C14520,C14530,C17200,C19200, C21000,C23000,C26000,C27000,C27400,C28000,C33000,C33200,C37000, C44300,C44400,C44500,C60800,C63020,C65500,C68700,C70400,C70620, C71000,C71500,C71520,C71640,C72200,etc |
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Diameter
|
3mm~800mm
|
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Length
|
1.0m 5.8m,6m,or as required
|
|
Container Size
|
20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High)
40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High) 40ft HC:12032mm(Length)x2352mm(Width)x2698mm(High) |
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Price Term
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EXW, FOB, CFR, CIF, etc.
|
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Application
|
Copper bar is widely used in boat building,War industry, Car industry and communication
industry where the components need good wear proof and great corrosion resistance |
| Copper Plate / C1100 T2 Pure Copper Sheet 3mm 6mm Thick Customized Sizes Electric Copper Plate | |
| Production Standard | ASTM, JIS, DIN, GB, ISO |
| Material | Copper, Brass, Bronze, White Copper |
| Width | 20mm-2000mm or as the customer's request |
| Thickness | 0.1mm-200mm or as the customer's request |
| Length | 50mm-3000mm |
| Hardness | O, 1/4 Hard, 1/2Hard, 3/4 Hard, H, EH |
| OEM Service | Perforated, Cutting special size, Doing flatness, Surface treatment, etc |
| Payterm | Ex-work, FOB, CIF, CFR, etc |
| Payment | T/T, L/C, Western Union, Alibaba Trade Assurance, etc |
| Delivery Time | Within 3 days for our stock size, 7-15 days for our production |
| Package |
Export standard package: bundled wooden box, suit for all kinds of transport, or be required |
| MOQ | No MOQ for stock Size, 100 KG for our production. |
| Sample | Free and available |
| Quality |
Mill Test Certificate, ISO9001, SGS, TVE |
| Advantage |
Copper is a very ductile and malleable metal. It is high electrical conductivity and high thermal conductivity. Thus, copper parts have a significant advantage for the production of electronic and electrical components. |
|
Product Name |
Copper Wire |
|
Standard |
ASTM AISI DIN EN GB JIS |
|
Grade |
C10100,C10200,C10300,C10400,C10500,C10700,C10800,C10910,C10920,
C10930,C11000,C11300,C11400,C11500,C11600,C12000,C12200,C12300, C12500,C14200,C14420,C14500,C14510,C14520,C14530,C17200,C19200, C71000,C71500,C71520,C71640,C72200 T1,T2,T3,TU1,TU0,TU2,TP1,TP2,etc |
|
Size |
OD:as required |
|
Hardness |
1/16 hard,1/8 hard,3/8 hard,1/4 hard,1/2 hard,full hard,soft,etc |
|
Tolerance |
±1% |
|
Price Terms |
FOB,CFR,CIF |
Copper CNC machined parts
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Business type |
Factory/Manufacturer |
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service |
Metal 3D printing, metal printing, metal powder sintering, plastic 3D printing, custom CNC machining, precision parts CNC 5-axis |
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Apply |
Automobile assembly parts, automation equipment parts, shafts, sheet metal processing, medical equipment, machinery, aircraft, |
|
Materials |
AL 6061-T6,6063,7075-T |
|
303,304,316L,17-4(SUS630 |
|
|
4140,Q235,Q345B,20#,45# |
|
|
TA1,TA2/GR2,TA4/GR5,TC4,TC18 |
|
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C36000(HPb62),C37700(HPb59),C26800(H68),C22000(H90) |
|
|
Copper, bronze, magnesium alloy, photosensitive resin, PA6, PA66, POM, acrylic, PC, etc |
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finish |
Sand blasting, anodizing color, blackening, electroplating, electrolytic polishing |
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Powder coating, PVD passivation, titanium plating, electro zinc plating |
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Electrochromium plating, electrophoresis, QPQ (quenching-polishing-quenching |
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Electrolytic polishing, chrome plating, knurling, laser etching marks, etc. |
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Main equipment |
Metal printer 3/4/5 axis CNC machining center CNC machining center (milling machine), CNC lathe, grinder |
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Cylindrical grinders, drilling machines, laser cutting machines, etc. |
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Drawing format |
STEP,STP,GIS,CAD,PDF,DWG,DXF |
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tolerance |
Customer drawing requirements |
|
Surface roughness |
Ra 0.1~3.2 |
|
Inspect |
Complete testing laboratory equipped with micrometers, optical comparators, vernier calipers, coordinate measuring machines |
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Depth caliper vernier, universal protractor, clock, internal Celsius meter |
|
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capacity |
Metal 3D printer working scope 420mm*420mm*450mm |
|
CNC turning work scope φ0.5mm-φ150mm*300mm |
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CNC milling work scope 510mm*1020mm*500mm |
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Supply capacity |
200000 pieces/month |
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Packing type: |
PP bags, cartons, wooden boxes, PVC pallets, machine parts copy paper |
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Quality control |
100% inspected |
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Delivery time |
Sample day: within 7 days |
About Us
Founded in 2008, we specialize in exporting premium copper products. Our manufacturing leverages continuous casting lines and precision drawing machines. Rigorous quality control, including eddy current testing and spectrometer analysis, guarantees the superior performance of our copper tubes and coils for global applications.
If you need any help, please contact us immediately!
Email address：sales@gneemetal.com
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Enterprise Employees
Cooperating Partner
Years Experience
