We are the Trusted Supplier of ASTM B111 UNS C71500 Copper Nickel Seamless Tubes in China
Typical Specification: outside diameter (O.D.) = 3/4″ = 19.05 mm, wall thickness (W.T.) = 16 BWG = 1.65 mm, length = 20 feet = 6096 mm
ASTM B111 UNS C71500 (CUNI: 70%30%)
OD=3/4 Inch (19.05 mm) BWG=18 (1.24 mm) length: 8026mm.
Standards: ASTM B111/ ASME SB111.
ASTM B111 / B111M – 18a
Standard Specification for Copper and Copper-Alloy Seamless Condenser Tubes and Ferrule Stock
Size range:
OD 2.0 to 350mm,
WT 0.3 to 50mm,
Length 18m or as request.
Testing: 100% Eddy Current Testing, 100% hydraulic Testing.100% UT TEST
Delivered in straight lengths or as U-bent tubes.
We also supply copper alloy complementary products for heat exchanger applications.
Finned Tube,Tubesheet, EEMU 146 pipe fitting, EEMU 145 pipe flange etc.
| Type of product | Grade(s) | Technical requirements * according to |
| Copper tube/ pipe | UNS C12200 | ASTM B111, ASME SB111 ASTM B135, ASME SB135 ASTM B251, ASME SB251 BS EN 1057 or closer |
| Brass tube/pipe | UNS C23000, UNS C26200 … UNS C44300, UNS C68700 … |
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| Cupronickel tube/pipe | UNS C70600, UNS C71500 UNS C71640 |
Application range: Copper-Nickel Alloy tube for condenser and heat-exchangers, Water Evaporators, Boiler Blowdown Heat Exchangers, air coolers, Gland Steam Condensers, Steam Ejector, Turbine Oil Coolers, Fuel Oil Heaters, Compressed Air Inter and After Coolers, Ferrules, Oil Well Pump Liner, and Distiller etc.
Copper Nickel tubes,CUNI 70/30 – C71500 – has, in general, the best resistance of any of the copper alloys to impingement attack and to corrosion from most acids and waters. It is being used in severe corrosive conditions in which service lives longer than those of other copper alloys are desired.
| UNS No. | C71500 – BSI No. CN107 – ISO Name CuNi30Mn1Fe |
| Chemical Comp. (%) | Cu rem / Ni 29 ~ 33 / Pb 0.05 / Fe 0.40 ~ 1 / Zn 1 max |
| ASTM Spec. | B 111, B 359, B395, B 466, B 467, B 543, B 552 |
| ASME Spec. | SB 111, SB 395, SB 466 |
| Applications | Condenser, Evaporator and Heat Exchanger tubes; Distiller tubing; Salt Water piping. |
| Temper | O61 Annealed / HR50 Drawn & Stress Relieved |
ASTM B 111 C71500 Properties
| Properties * | Metric | English |
| Density | 8.94 g/cc | 0.323 lb/in³ |
| Tensile Strength min.- O61 -/- HR50 | 360 MPa -/- 495 MPa | 52 ksi -/- 72 ksi |
| Yield Strength min.- O61 -/- HR50 | 125 MPa -/- 345 MPa | 18 ksi -/- 50 ksi |
| CTE, linear | 16.2 10-6/°C @ 20.0 – 300 °C | 9.0 10-6/°F @ 70.0 – 570 °F |
| Specific Heat Capacity | 0.09 cal/g-°C @ 20ºC | 0.09 BTU/lb-°F @ 70ºF |
| Thermal Conductivity | 29 W/m-K @ 20.0 °C | 17 BTU/ft2/ft/h/°F @ 70.0 °F |
| Melting Point | 1171 – 1238 °C | 2140 – 2260 °F |
Applications of ASTM B111 C71500 Copper-Nickel Tubes:
Marine & Shipbuilding – Seawater cooling, condensers, heat exchangers, ballast systems
Oil & Gas Industry – Offshore platforms, desalination plants, piping systems
Power Generation – Steam turbines, nuclear plants, cooling systems
Aerospace & Defense – Hydraulic tubing, high-performance sealing systems
Chemical Processing – Corrosion-resistant equipment, acid-resistant piping
ASTM B111 C71500 Copper-Nickel Tube – 70/30 CuNi Alloy for Marine & Industrial Use
ASTM B111 C71500 Copper-Nickel Tubes (CuNi 70/30) are high-performance seamless tubes specifically designed for marine, heat exchanger, and industrial applications. With a 70% copper and 30% nickel composition, these tubes offer exceptional corrosion resistance, biofouling protection, and high mechanical strength. They are widely used in seawater systems, condensers, power plants, and offshore applications.
Copper products that GNEE can provide
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Product Name |
Straight Copper Pipe/Pancake Coil Copper Pipe/Capillary copper pipe |
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Material |
C10100,C10200,C12000,C12200,C11000,T1,T2,T3,TP2,TU1,TU2,TU3,H62, H65,H70,etc |
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Standard |
ASTM B280,ASTM B68,ASTM B75,ASTM B88 JIS H3300 EN12735,AS1571 |
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Shape Type |
Straight Round,Square,Rectangular,Coil,Oval,Half-Round |
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Wall Thickness |
0.2-3mm |
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Out Diameter |
3mm-100mm |
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Length |
1M-6M or As your demand (Pancake copper tube usual length: 15 meters) |
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Cu |
High Purity 99.9% Copper |
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Temper |
Soft(M),Half Soft(M2) and Half Hard(Y2) |
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Surface Treatment |
Bright and Clean |
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Package Type |
Plastic Film With Plastic Caps on the both ends and Wooden Case Carton Package or as your demand |
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Application |
Refrigerator,Condenser and Heat Exchange,Decoration,Water Tube,Precision Equipment etc |
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Item |
Straight copper rod/copper round bar |
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Standard |
ASTM,DIN,BS,CDA,JIS,GB |
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Material |
T1,T2,C10100,C10200,C10300,C10400,C10500,C10700,C10800, |
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Shape |
Round,Square,Rectangular,etc. |
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Specifications |
Diameter:3~200mm |
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Length |
3m,5.8m, 6m, 11.8m, 12m, or as required. |
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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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Surface |
mill,polished,bright,oiled,hair line,brush,mirror,sand blast,or as required. |
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Price term |
EXW, FOB, CFR, CIF, etc. |
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Payment term |
T/T |
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Package |
Export standard package: bundled wooden box, suit for all kinds of transport, |
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Delivery time |
According to order quantity |
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Application |
A copper rod is a type of colored metal processing bar stock with high electrical conductivity. It is mainly divided into brass |
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Contact |
If any requirement please feel free to inform me at any time. |
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Size |
Width: 10mm to 2000mm, |
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Hardness |
1/16 hard,1/8 hard,3/8 hard,1/4 hard,1/2hard,full hard. |
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Surface |
Polished,bright,oiled,hair line,brush,mirror,or as required |
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Export to |
Ireland,Singapore,Indonesia,Ukraine,Saudi Arabia,Spain,Canada,USA, |
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Package |
Plastic film with Wooden case or wooden pallet |
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Delivery time |
Prompt delivery or upon your order quantity. |
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Quality Control |
Mill Test Certification is supplied with shipment,Third Part Inspection is acceptable. |
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Application |
widely used inair conditioners,refrigerators,electric,solar water heater, polished pipe an be used in decorative,such as stair rail. |
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Shape |
Round, Square, Oval, can be customized |
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Model Number |
C11000, C10200, C12000, C12200 C26800 C27000 C35000 C38000 etc. |
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Color |
Red Cppper , Brass |
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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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Diameter |
0.10mm-5.00mm |
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Insulation Material |
Enameled |
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Certification |
ISO9001 |
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Advantages |
High conductivity,Good solderability,High ductility |
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Coating |
Double Layer or customized |
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Packing |
Standard export package or seaworthy Package |
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Application |
1. Pancake Coil for ACR, General Engineering Applications |
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copper CNC machined parts
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Precision of piece: |
+/-0.01mm |
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Roughness of piece: |
Ra≤0.1 |
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Quality standard: |
DIN, ASTM, GOST, GB, JIS, ANSI, BS; |
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Drawing format: |
JPEG,PDF,AI,PSD,DWG,DXF,IGS,STEP; |
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Products certification: |
ISO9001:2008, CE, RoHS, SGS; |
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Dimension: |
Dia.500mm or 850mm width |
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Available materials |
Steel: carbon steel, alloy steel, stainless steel, 4140,20#,45# ,40Cr,20Cr ,etc |
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Aluminum: AL6061,AL6063,AL6082,AL7075,AL5052 etc. |
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Stainless steel: 201SS,301SS,304SS,316SS etc. |
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Brass: C37700,C28000, C11000,C36000 etc |
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Plastics: PTFE,PEEK,POM,PA,UHMW, NYLON |
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Surface treatment: |
Steel parts |
Stainless steel parts |
Aluminum parts |
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Galvanization |
Polishing |
anodized |
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Black oxidation |
Passivation |
Sandblast anodized |
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Nickel plating |
Laser engraving |
Colorful anodized |
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Chrome plating |
Sand blast |
Brushed |
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Heat treatment |
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Polishing |
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Powder coated |
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Chrome plating |
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Why choose us?
Since our establishment in 2008, our company has specialized in the production and export of copper products. We utilize advanced production lines and a comprehensive quality control system. From raw materials to finished products, every step is rigorously inspected using precision instruments (such as spectrometers, metallographic microscopes, and conductivity testers) to ensure that our products meet international standards for composition, dimensions, and performance. We are committed to providing high-quality, high-precision copper products and reliable service to our global customers.
Email:sales@gneesteel.com
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