Copper Nickel 95/5 tubes, commonly called C70600 tubes, are renowned for their exceptional properties and diverse applications in industries across several sectors. Composed primarily of copper with an average nickel content of 5-6%, these tubes exhibit unparalleled corrosion resistance, thermal stability, and mechanical strength characteristics that make them invaluable.
Copper Nickel 95/5 tubes boast a precise composition of 95% copper for excellent thermal conductivity, ductility, and ease of fabrication. Their addition of 5% nickel enhances resistance to corrosion in marine environments where saltwater exposure can accelerate material degradation; with their precise composition ensures optimal performance under rigorous conditions such as those encountered by various industries, making them the go-to choice.
Copper Nickel 95/5 tubes stand out due to their exceptional resistance to corrosion, even in highly corrosive environments such as seawater. This corrosion protection extends equipment lifespan while decreasing maintenance costs. These tubes also boast excellent thermal conductivity, making them perfect for applications requiring efficient heat transfer. Moreover, Copper Nickel 95/5 tubes are inherently durable—capable of withstanding pressures and temperatures without degrading performance in crucial operations.
Copper Nickel 95/5 tubes offer several advantages to industries seeking reliable and long-lasting materials, including corrosion resistance, which minimizes equipment failure and extends system lifespan for cost savings and operational efficiencies. Furthermore, their superior thermal conductivity improves energy efficiency, thus further cutting operational costs, while their superior mechanical properties provide peace of mind to engineers and operators.
Copper Nickel 95/5 tubes find widespread applications across numerous industries due to their exceptional properties and versatility. Within marine sector applications, such as shipbuilding, offshore platforms, desalination plants and desalination plants requiring corrosion resistance; within oil & gas pipelines, heat exchangers, condensers, as well as pipelines with corrosive fluids in high-pressure environments; additionally, they’re utilized in power generation, chemical processing systems as well as HVAC systems where their corrosion resistance, thermal conductivity, durability is indispensable
Standard | ASTM B466, B467, B552 / ASME SB466, SB467, SB552, ASTM B 111, B543, ASME SB 111, SB543 |
Grade | 66-30-2-2 Cu-Ni (C71640, CW353H), 95/5 material |
Specifications | ASME, SAE, MIL, QQ, ISO, BS, and JIS. |
Seamless Tube Size | 3.35 mm OD To 101.6 mm OD, 15 NB to 150 NB IN |
Round Tube Size | 6.35 mm OD To 152 mm OD |
Swg & Bwg | 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg. |
Wall thickness | 0.020″ –0.220″, (special wall thicknesses available) |
Length | Single Random, Double Random, Standard & Cut length |
Form | Round, Coil, Square, Rectangular, Boiler, Hydraulic, Straight or ‘U’ bent Tubes, Hollow, LSAW Tubes Etc. |
Type | Seamless, Polish, EFW, Fabricated |
End | Plain End, Beveled End, Treaded |
Marking | All 66/30/2/2 Copper Nickel tubes are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer’s request.) |
Application | Oil Tube, Gas Tube, Fluid Tube, Boiler and Heatexchanger |
Grade | Sn | Pb | Ni | Fe | Mn | AS | Cu Ag | Sb | Bi |
Cu-Ni 95/5 | 0.10 Max | 0.05 Max | 4.00 – 5.00 | 0.10 Max | 0.25 Max. | 0.10 Max. | 95.00 – 96.000 | 0.01 Max | 0.0025 Max. |
Properties * | Metric | English |
Density | 8.94 g/cc | 0.323 lb/in³ |
Tensile Strength min.- O61 -/- H55 | 275 MPa -/- 310 MPa | 40 ksi -/- 45 ksi |
Yield Strength min.- O61 -/- H55 | 105 MPa -/- 240 MPa | 15 ksi -/- 35 ksi |
CTE, linear | 17.1 10-6/°C @ 20.0 – 300 °C | 9.5 10-6/°F @ 70.0 – 570 °F |
Specific Heat Capacity | 0.09 cal/g-°C @ 20ºC | 0.09 BTU/lb-°F @ 70ºF |
Thermal Conductivity | 45 W/m-K @ 20.0 °C | 26 BTU/ft2/ft/h/°F @ 70.0 °F |
Melting Point | 1099 – 1149 °C | 2010 – 2100 °F |
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