C71500 Copper Nickel Tubes PDF
C71500 Copper Nickel Size & Price PDF
Products Description
As a leading supplier of copper-nickel alloys, GNEE offers a wide range of ASTM B111 C71500 (70/30) copper-nickel alloys, including plates, bars, tubes, fittings, and flanges. This copper-nickel alloy is known for its moderate strength, good machinability, formability, and weldability. C715 copper alloy is also known as 70/30 copper-nickel alloy because it contains 30% nickel. C715 copper-nickel alloy is most commonly used in high-temperature, high-pressure, high-flow-rate, and highly destructive turbulent environments. Its extremely low iron content (maximum 0.5%) gives C715 alloy excellent corrosion resistance and resistance to stress corrosion cracking, making it an ideal choice for marine and industrial applications.
ASTM B111 C71500 Copper Nickel (70/30) Applications
Condensers
Seawater piping
Power plants
Exchanger shells
Industrial
Marine
Chemical Composition
| Cu | Fe | Pb | Mn | Ni | Zn | |
| Min/Max | Rem | 0.40 - 1.0 | 0.05 | 1 | 29.0 - 33.0 | 1 |
| Nominals | 69.5000 | 0.5000 | - | - | 30.0000 | - |
Mechanical Properties
| Temper | Sect. Size | Cold Work | Type Min | Temp | Tensile Strength | YS 0.05% UL |
YS 0.02% Offset |
YS 0.005% Offset |
Elong. | RH B |
RH C |
RH F |
RH 30T |
VH 500 |
BH 500 |
BH 3000 |
Shear Strgth |
Fatigue Strgth |
Izod Impact Strgth |
| - | in. | % | - | F | ksi | ksi | ksi | ksi | % | B | C | F | 30T | 500 | 500 | 3000 | ksi | ksi | ft-lb |
| - | mm. | - | - | C | MPa | MPa | MPa | MPa | - | - | - | - | - | - | - | - | MPa | MPa | J |
| Flat Products | |||||||||||||||||||
| 20 | 1 | 68 | 55 | 20 | - | - | - | - | - | - | - | - | - | - | - | - | |||
| 20 | 25.4 | 0 | TYP | 20 | 379 | 138 | - | - | 45 | 35 | - | - | - | - | - | - | - | - | 0 |
| Rod | |||||||||||||||||||
| H02 | 1 | 68 | 75 | 70 | - | - | - | - | - | - | - | - | - | - | - | - | |||
| H02 | 25.4 | 20 | TYP | 20 | 517 | 483 | - | - | 15 | 80 | - | - | - | - | - | - | - | - | 0 |
| Tube | |||||||||||||||||||
| OS035 | 0 | 68 | 54 | - | - | - | - | - | - | - | - | - | - | - | - | - | |||
| OS035 | 0 | 0 | TYP | 20 | 372 | - | - | - | 45 | 36 | - | 77 | - | - | - | - | - | - | 0 |
| OS025 | 0 | 68 | 60 | 25 | - | - | - | - | - | - | - | - | - | - | - | - | |||
| OS025 | 0 | 0 | TYP | 20 | 414 | 172 | - | - | 45 | 45 | - | 80 | - | - | - | - | - | - | 0 |
Physical Properties
| Product Property | US Customary | Metric |
| Coefficient of Thermal Expansion | 9.0 · 10-6 per oF (68-572 F) | 16.2 · 10-6 per oC (20-300 C) |
| Density | 0.323 lb/in3 at 68 F | 8.94 gm/cm3 @ 20 C |
| Electrical Conductivity | 4 %IACS @ 68 F | 0.027 MegaSiemens/cm @ 20 C |
| Electrical Resistivity | 225.0 ohms-cmil/ft @ 68 F | 37.4 microhm-cm @ 20 C |
| Melting Point - Liquidus | 2260 F | 1238 C |
| Melting Point - Solidus | 2140 F | 1171 C |
| Modulas of Elasticity in Tension | 22000 ksi | 152000 MPa |
| Modulus of Rigidity | 8300 ksi | 57230 MPa |
| Specific Gravity | 8.94 | 8.94 |
| Specific Heat Capacity | 0.09 Btu/lb/oF at 68 F | 377.1 J/kg · oK at 293 K |
| Thermal Conductivity | 17.0 Btu · ft/(hr · ft2 · oF) at 68F | 29.4 W/m · oK at 20 C |
Analysis of Machining Processes for SB 111 C71500
Cold Working and Hot Working
SB111 C71500 alloy can be both cold-worked and hot-worked, and is easily machined into various shapes. Cold working is typically used to increase the material's hardness and reduce ductility; generally, when a cold working rate of over 90% is achieved, the hardness can be increased to approximately 130 HV.
Hot working is usually performed within a temperature range of 930-1030℃. It is important to note that excessively high temperatures may cause grain growth, thereby reducing the material's mechanical properties. Therefore, temperature control during processing is crucial.
Welding Performance
C71500 copper-nickel alloy exhibits good weldability and can be subjected to conventional welding processes such as TIG (Tungsten Inert Gas) and MIG (Metal Inert Gas) welding. During welding, appropriate welding wire should be used to avoid degradation of the corrosion resistance of the weld zone. Appropriate post-weld heat treatment is recommended to further improve the mechanical properties of the welded area.
Work Hardening
70/30 copper-nickel pipe undergoes significant work hardening during cold working; its hardness and strength increase with the amount of cold working. Therefore, in practical applications, the hardness of the material can be adjusted by controlling the amount of cold working to meet the mechanical property requirements of different applications.
C71500 Copper-Nickel (70/30 CuNi) Tube FAQ
Q: What is C71500 copper-nickel?
A: C71500 is a copper-nickel alloy containing approximately 70% copper and 30% nickel, with small additions of iron and manganese. It is known for its exceptional corrosion resistance in seawater and marine environments.
Q: Why is C71500 so resistant to seawater corrosion?
A: The 30% nickel content allows it to form a tight, stable, protective oxide film that is highly resistant to corrosion, biofouling, and erosion from high-velocity water.
Q: What is the common name for C71500?
A: It is commonly referred to as 70/30 CuNi or 70/30 copper-nickel.
Q: Where is C71500 tube most commonly used?
A: It is the premium choice for seawater-cooled heat exchangers and condensers in power plants, naval and commercial ships, offshore platforms, and desalination plants.
Q: When should I choose C71500 over C70600?
A: Choose C71500 for critical, high-reliability systems with high flow velocities, elevated temperatures, or where maximum service life and minimal downtime are required, and budget is secondary.
Our spot inventory
| ASME SB111 C71500 |
C71500 seamless condenser tube |
C71500 welded copper nickel pipe |
| ASTM B111 C71500 |
ASTM B466 C71500 pipe |
C71500 cupronickel boiler tube |
| 70/30 copper nickel pipe |
C71500 heat exchanger tube |
C71500 welded copper nickel pipe |
| SB111 UNS C71500 |
70/30 cupronickel condenser tube |
ASTM B111 C71500 heat exchanger tube |
|
C71500 copper nickel pipe |
ASTM B111 C71500 heat exchanger tube |
ASME SB111 C71500 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.
