What is a C70600 copper nickel tube?
ASTM B111 UNS C70600 copper-nickel alloy is a copper-based alloy with nickel as the main alloying element. The copper content is approximately 90%, and the nickel content is approximately 10%. Its thermal conductivity is similar to that of carbon steel, while its coefficient of thermal expansion is similar to that of austenitic stainless steel, and its melting point is as high as 1149℃.
Chemical Composition ASTM B111 ASTM B466 90/10 Pipes and Tubes
| Copper Alloy UNS Nos |
Copper incl Silver |
Nickel incl Cobalt |
Lead max |
Iron | Zinc,max | Manganese |
| C70600 | remainder | 9.0 to 11.0 | 0.05 | 1.0 to 1.8 | 1 | 1.0 max |





Mechanical Properties ASTM B466 90/10 Pipes and Tubes
| Standard Temper |
Former Temper |
Copper Alloy UNS Nos. |
Tensile Strength, min,ksi(MPa) |
Yield Strength,A min, ksi(MPa) |
RockwellB Hardness 30T |
| 060 | Soft annealC | C70600 | 38(260) | 13(90) | 45 max |
Processing Properties
C70600 is easy to work with, both hot and cold, and can be formed through various methods such as forging, rolling, and drawing. It has good weldability and can be joined using methods such as gas welding, resistance welding, and laser welding. Furthermore, due to its suitable hardness and machinability, it can be processed by cutting and milling. For surface treatment, mechanical polishing, electroplating, and sandblasting can be performed to improve its appearance and corrosion resistance.
Typical Uses for C706 Copper Nickel "90/10":
AUTOMOTIVE: Power Steering Tube, Brake Lines
CONSUMER: Screw Lamp Bases
INDUSTRIAL: Condenser Plates, Condensers, Weld Torch Tips, Heat Exchanger Tubes, Valve Bodies, Evaporator Tubes, Pressure Vessels, Distiller Tubes, Pump Impellers for Oil Refining, Ferrules, Evaporators
MARINE: Boat Hulls, Tube Sheet for Salt Water Service, Salt Water Pipe Fittings, Salt Water Piping Systems, Salt Water Piling Wrap, Hot Water Tanks, Salt Water Baffles, Propeller Sleeves, Ship Hulls, Water Hoses
PLUMBING: Flanges
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.





