ASME SB111 (American Society of Mechanical Engineers) and ASTM B111 (American Society for Testing and Materials) standards specify the requirements for seamless copper and copper-alloy tubes used in heat exchangers, condensers, and other general engineering applications. Among the alloys covered by these standards, C70600 (90/10 Copper-Nickel alloy) is widely used due to its excellent mechanical properties and outstanding resistance to corrosion, especially in marine environments.
Key Features of C70600 (O61) Copper Alloy Seamless Tubes
Chemical Composition:
Copper (Cu): 88.7% to 91.2%
Nickel (Ni): 9.0% to 11.0% (including cobalt)
Iron (Fe): 1.0% to 1.8%
Manganese (Mn): 1.0% maximum
Impurities such as lead, sulfur, and zinc are maintained at very low levels to ensure high quality.
Mechanical Properties (O61 Temper - Annealed Condition):
Tensile Strength: 275 MPa (Min)
Yield Strength (0.5% offset): 105 MPa (Min)
Elongation: 40% (Min)
Hardness: High toughness with good ductility, suitable for cold working.
Corrosion Resistance:
Exceptional resistance to seawater corrosion, biofouling, and stress-corrosion cracking.
Excellent performance in brackish and marine environments, making it ideal for heat exchangers and condensers in shipbuilding, desalination plants, and power plants.
Thermal and Electrical Conductivity:
Good thermal conductivity ensures efficient heat transfer.
Moderate electrical conductivity compared to pure copper due to the presence of nickel and iron.
Fabrication and Welding:
Easily fabricated and formed into seamless tubes.
Suitable for a wide range of welding methods, including TIG, MIG, and resistance welding.
Applications of C70600 O61 Copper Alloy Tubes
Marine Industry:
Heat exchangers and condensers in ships and submarines.
Piping systems for seawater cooling and desalination plants.
Power Generation:
Steam turbine condensers.
Heat exchangers in power plants.
Chemical Processing:
Tubular systems in chemical plants exposed to corrosive fluids.
Heat exchangers handling brackish water or polluted water.
Oil and Gas Industry:
Offshore platforms and subsea equipment.
Firewater systems and piping.
Advantages of Using C70600 O61 Copper Alloy Tubes
High reliability and long service life in harsh environments.
Low maintenance requirements due to its superior corrosion resistance.
Excellent machinability and ease of installation.
Environmentally friendly and recyclable material.
Copper products that GNEE can provide
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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. |
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Wall Thickness |
0.2mm-120mm |
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Hardness |
1/16 hard,1/8 hard,3/8 hard,1/4 hard,1/2hard,full hard,soft,etc |
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Ultimate Strength (≥ MPa) |
460-680 |
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Cu (Min) |
99% |
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Surface |
Mill,polished,bright,oiled,hair line,brush,mirror,sand blast,or as required. |
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Specifications |
Round：Wall thickness: 0.2mm~120mm,Outside Diameter: 2mm~910mm Square：Wall thickness: 0.2mm~120mm, Size: 2mm*2mm~1016mm*1016mm |
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Package |
Export standard package: bundled wooden box, suit for all kinds of transport,or be required |
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Standard
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ASTMB152,B187,B133,B301,B196,B441,B465,JISH3250-2006,
GB/T4423-2007,etc |
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Material
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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
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3mm~800mm
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Length
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1.0m 5.8m,6m,or as required
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Container Size
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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
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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. |
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Product Name |
Copper Wire |
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Standard |
ASTM AISI DIN EN GB JIS |
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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 |
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Size |
OD:as required |
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Hardness |
1/16 hard,1/8 hard,3/8 hard,1/4 hard,1/2 hard,full hard,soft,etc |
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Tolerance |
±1% |
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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, |
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Materials |
AL 6061-T6,6063,7075-T |
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303,304,316L,17-4(SUS630 |
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4140,Q235,Q345B,20#,45# |
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TA1,TA2/GR2,TA4/GR5,TC4,TC18 |
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C36000(HPb62),C37700(HPb59),C26800(H68),C22000(H90) |
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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 |
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Surface roughness |
Ra 0.1~3.2 |
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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 |
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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
Square Meters Built
Enterprise Employees
Cooperating Partner
Years Experience
