What is a C70600 copper nickel tube?
C70600 copper-nickel alloy is mainly composed of copper, nickel, and small amounts of chromium, iron, and manganese. Its nickel content is typically 10-30%, while the chromium content is lower, usually around 1-2%. Due to the addition of nickel, the alloy not only has good resistance to seawater corrosion but also maintains strong oxidation resistance at high temperatures. This alloy exhibits good thermal conductivity, low expansion, and high tensile strength, making it widely used in many engineering projects requiring high strength and corrosion resistance.
Corrosion Resistance
The outstanding characteristic of C70600 copper-nickel alloy is its excellent corrosion resistance, especially its strong resistance to corrosion in seawater. Its corrosion resistance mechanism is mainly attributed to the role of nickel, which forms a dense nickel-copper alloy compound on the surface of the copper matrix, preventing the intrusion of corrosive media.
Furthermore, this alloy exhibits strong resistance to chlorides, acidic solutions, and oxidizing media, making it suitable for harsh environments such as chemical equipment, offshore platforms, and oil drilling.





Chemical Composition
|
Cu(1) |
Fe |
Pb |
Mn |
Ni(2) |
Zn |
|
|---|---|---|---|---|---|---|
|
Min./Max. |
Rem. |
1.0-1.8 |
.05 |
1.0 |
9.0-11.0 |
1.0 |
|
Nominal |
88.6 |
1.4 |
- |
- |
10.0 |
- |
Copper Nickel C70600 Availability & Highlights
| Standards | ||||||
|---|---|---|---|---|---|---|
| Cupro Nickel Tube90/ 10 | Standard | BS2871part3 | ASTM B-111 | IS 1545 | JIS H 3300 | NFA 51 102 |
| Symbol | CN 102 | C 70600 | CuNi10Fe1 | C7060 | CuNi10Fe1Mn | |
| Cupro Nickel Tubes 70/30 | Standard | BS2871part3 | ASTM B-111 | IS 1545 | JIS H 3300 | NFA 51 102 |
| NFA 51 102 | CN 107 | C 71500 | CuNi30Mn1Fe | C 7150 | CuNi30Mn1Fe | |
Dimensions:
|
Non Ferrous Tubes |
||||||
|---|---|---|---|---|---|---|
|
Sr. No. |
Material |
Size |
Swg. |
Specification |
Manufacturer |
|
|
1 |
Copper Nickel Copper Brass Aluminium |
2 mm OD |
24 Swg. |
16 Swg. |
IS |
Indian |
Our spot inventory
| ASME SB111 C70600 |
C70600 seamless condenser tube |
C70600 welded copper nickel pipe |
| ASTM B111 C70600 |
ASTM B466 C70600 pipe |
C70600 cupronickel boiler tube |
| 90/10 copper nickel pipe |
C70600 heat exchanger tube |
C70600 welded copper nickel pipe |
| SB111 UNS C70600 |
90/10 cupronickel condenser tube |
ASTM B111 C70600 heat exchanger tube |
|
C70600 copper nickel pipe |
ASTM B111 C70600 heat exchanger tube |
ASME SB111 C70600 copper nickel pipe |
About us
Gnee is a premier manufacturer and international supplier of comprehensive copper and copper alloy products, committed to delivering excellence in copper tubes, copper sheets, copper plates, copper bars, copper rods, copper wires, and copper strips.
Our Extensive Product Portfolio & Specifications:
Copper Tubes & Pipes:
We supply a full range including **Capillary Tubes, Thin-Walled Copper Tubes, Thick-Walled Copper Tubes, Round Pipes, Square Pipes, Rectangular Pipes, Welded Pipes, Seamless Pipes, Heat Exchanger Tubes, and Condenser Tubes.
Copper Sheets, Plates:
Our flat-rolled products cover Copper Foils, Thin Sheets, Thick Plates, and Circles (Round Plates) in various tempers (O, H) for diverse applications.
Copper Bars, Rods & Profiles:
We offer Round Bars, Square Bars, Hexagonal Bars, and Flat Bars with excellent machinability and strength.
Copper Wires & Strips:
Our lineup includes high-conductivity Bare Copper Wires, Stranded Wires, and precisely manufactured Copper Strips.
Common Alloys & International Standards:
We master a wide array of materials compliant with ASTM, EN, JIS, and GB standards:
Pure Copper: C11000 (ETP Copper), C10200 (Oxygen-Free Copper), C12000 (DLP)
Brass Alloys: C26000 (Cartridge Brass), C27200 (Brass), C28000 (Muntz Metal)
Copper-Nickel: C70600 (CuNi90/10), C71500 (CuNi70/30)
Phosphor Bronze: C51900, C52100, C54400
Serving industries from HVAC/R and plumbing to electrical, automotive, and marine engineering, Gnee provides OEM support, competitive pricing, and reliable bulk supply for your global projects.





