Benefits of ASTM B111 C70600 Copper-Nickel Tubes:
Superior Corrosion & Biofouling Resistance – Ideal for marine environments
High Strength & Durability – Withstands mechanical stress & high-pressure systems
Excellent Thermal Conductivity – Efficient heat exchange in cooling applications
Good Weldability & Fabrication – Compatible with standard welding techniques
Long Service Life – Reduces maintenance costs and enhances system reliability
90/10 Copper-Nickel Tubes Chemical Composition
| Elements | ||||||
|---|---|---|---|---|---|---|
| Cu(1,2) | Pb | Zn | Fe | Ni(3) | Mn | |
| (1) Cu + Sum of Named Elements 99.5% min. (2) Cu value includes Ag. (3) Ni value includes Co. |
||||||
| Min (%) | 1.0 | 9.0 | ||||
| Max (%) | Rem | 0.05 | 1.0 | 1.8 | 11.0 | 1.0 |





Mechanical Properties
| Form | Temper | Temper Code | Tensile Strength (ksi) |
YS-0.2% Offset (ksi) |
YS-0.5% Ext (ksi) |
Elongation (%) |
Rockwell B scale | Rockwell F scale | Rockwell 30T scale |
|---|---|---|---|---|---|---|---|---|---|
| * Measured at room temperature, 68°F (20°C). | |||||||||
| Bar | Hard | H04 | 50 Typ | 25 Typ | 15 Typ | ||||
| Soft Anneal | O60 | 38 Min | 15 Typ | 30 Typ | |||||
| Flat Products | 1/4 Hard | H01 | 53 Typ | 16 Typ | 35 Typ | 60 Typ | |||
| As Hot Rolled | M20 | 40 Min for Standard | 15 Typ | 30 Min for Standard | 3 Min for Standard | ||||
| Hard | H04 | 75 Typ | 73 Typ | 5 Typ | 80 Typ | ||||
| Tube | Annealed | O61 | 44 Typ | 16 Typ | 42 Typ | 15 Typ | 65 Typ | 26 Typ | |
| Light Drawn, Light Cold Rolled | H55 | 45 Min for Standard | 10 Typ | 72 Typ | 100 Typ | 70 Typ | |||
Physical Properties
| Melting Point - Liquidus°F | 2100 |
|---|---|
| Melting Point - Solidus°F | 2010 |
| Densitylb/cu in. at 68°F | 0.323 |
| Specific Gravity | 8.94 |
| Electrical Conductivity% IACS at 68°F | 9 |
| Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F | 26 |
| Coefficient of Thermal Expansion 68-57210 to -6 power per °F (68 – 572°F) | 9.5 |
| Specific Heat CapacityBtu/ lb /°F at 68°F | 0.09 |
| Modulus of Elasticity in Tensionksi | 18000 |
| Modulus of Rigidityksi | 6800 |
ASTM B466 C70600 Copper Nickel Seamless Pipes and Tubes Applications
Hydraulic lines
Fish cages for aquaculture
Heat exchangers and condensers
Desalination units
Sea water pipework
Tubes for power plants and ships
Offshore fire water systems
Pumps, valves, sheathing and fittings for ship hulls
Desalination units
Hydraulic lines
Fish cages for aquaculture
Heat exchangers and condensers
Sea water pipework
Offshore fire water systems
Tubes for power plants and ships
Pumps, valves, sheathing and fittings for ship hulls
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.





