Cupro Nickel 70/30 Hot Finished Tubes & Pipes are formed using a superlative copper-nickel alloy that is approximately 30 percent nickel, 70 percent copper, with precise additions of iron and manganese for enhanced corrosion resistance in a more rugged environment. This alpha alloy remains unaffected in higher velocities, contaminated, or service-loaded waters, unaffected by stress corrosion cracking attacks. Cupro 70/30 retains high material strength in somewhat higher temperature conditions and can be easily deformed for cold as well as hot working processes. It is also easy to weld, with good service life in water or industrial liquids.
Metinox Overseas supplies seamless, welded, ERW, and EFW Cupro Nickel 70/30 pipes and tubes that are ideal for harsh applications. These are commonly used in ship-building applications, desalination plants, heat exchanger applications, condensers, offshore piping installations, and seawater cooling circuits. In salt water, Cupro Nickel 70/30 tubes possess better corrosion resistance because of their neutral electrode potential compared to other copper-alloyed materials. These are also used in chemical processing applications, petrochemical installations, electrical installations, minting applications, and specialized shipping applications such as propellers and piping sets. Cupro Nickel 70/30 pipes and tubes possess excellent durability, thermal conductivity, and are not prone to biological fouling.
Table of Contents
- Specifications of Cupro Nickel 70/30 Pipe & Tube
- Chemical Composition of Cupro Nickel 70/30 Pipes & Tubes
- NES 780 ERW Pipes & Tube Mechanical Properties
- Cupro Nickel 70/30 Pipes & Tubes Equivalent Grades
- Weight Chart of Cupro Nickel 70/30 Pipes and Tubes
- Cu-ni 70/30 Tube Size Chart
- Pressure Rating of Copper Nickel 70/30 Seamless Pipe
- Manufacturing Process of Cupro Nickel 70/30 Pipes & Tubes
- Applications & Usage of Nickel 70/30 Pipes & Tubes
- Types of Cupro Nickel 70/30 Pipes & Tubes
- Frequently Asked Questions
Specifications of Cupro Nickel 70/30 Pipe & Tube
| Specification | Details |
| Standards | ASTM / ASME SB 111 / 466 / 467 / 552 |
| Pipe Size | 1/2" to 6" in OD & NB, available in various SWG & SCH |
| Tube Size | 1 mm OD up to 254 mm OD, thickness from 0.2 mm to 20 mm |
| Type | Seamless / ERW / Welded / EFW / Fabricated / CDW |
| Length | Single Random, Double Random & Required Length |
| End Finish | Plain End, Beveled End, Threaded End |
Chemical Composition of Cupro Nickel 70/30 Pipes & Tubes
| Grade | Cu (%) | Mn (%) | Pb (%) | Ni (%) | Fe (%) | Zn (%) |
| Cu-Ni 70-30 | 65.0 min | 1.00 max | 0.5 max | 29-33 max | 0.4-1.0 | 1.00 max |
NES 780 ERW Pipes & Tube Mechanical Properties
| Grade | Cu (%) | Mn (%) | Pb (%) | Ni (%) | Fe (%) | Zn (%) |
| Cu-Ni 70-30 | 65.0 min | 1.00 max | 0.5 max | 29-33 max | 0.4-1.0 | 1.00 max |
Cupro Nickel 70/30 Pipes & Tubes Equivalent Grades
| Grade | Cu (%) | Mn (%) | Pb (%) | Ni (%) | Fe (%) | Zn (%) |
| Cu-Ni 70-30 | 65.0 min | 1.00 max | 0.5 max | 29-33 max | 0.4-1.0 | 1.00 max |
Weight Chart of Cupro Nickel 70/30 Pipes and Tubes
| NPS (inch) | OD (mm) | WT (mm) | WT (inch) | Sched | Weight (kg/m) | Weight (lb/ft) |
| 1/2? | 21 | 2.769 | 0.0109 | 40 STD | 1.268 | 0.0851 |
| 3.734 | 0.0147 | 80 STD | 1.621 | 1.088 | ||
| 3/4? | 27 | 2.870 | 0.0113 | 40 STD | 1.684 | 1.131 |
| 3.912 | 0.0154 | 80 STD | 2.195 | 1.474 | ||
| 1? | 33 | 3.378 | 0.0133 | 40 STD | 2.501 | 1.679 |
| 4.547 | 0.0179 | 80 STD | 3.325 | 2.172 | ||
| 1 1/4? | 42 | 3.556 | 0.0140 | 40 STD | 3.385 | 2.273 |
| 4.851 | 0.0191 | 80 STD | 4.464 | 2.997 | ||
| 1 1/2? | 48 | 3.683 | 0.0145 | 40 STD | 4.048 | 2.718 |
| 5.080 | 0.0200 | 80 STD | 5.409 | 3.361 | ||
| 2? | 60 | 3.912 | 0.0154 | 40 STD | 5.441 | 3.653 |
| 5.537 | 0.0218 | 80 STD | 7.480 | 5.022 | ||
| 2 1/2? | 73 | 5.516 | 0.0203 | 40 STD | 8.629 | 5.793 |
| 7.010 | 0.0276 | 80 STD | 11.411 | 7.661 | ||
| 3? | 89 | 5.486 | 0.0216 | 40 STD | 11.284 | 7.576 |
| 7.620 | 0.0300 | 80 STD | 15.272 | 10.025 | ||
| 4? | 114 | 6.020 | 0.0237 | - | 16.073 | 10.790 |
| 8.560 | 0.0337 | - | 22.318 | 14.983 | ||
| 6? | 168 | 7.112 | 0.0280 | 40 STD | 58.263 | 18.974 |
| 10.097 | 0.0432 | 80 XHY | 42.561 | 28.573 | ||
| 8? | 219 | 8.179 | 0.0322 | 40 | 42.352 | 28.554 |
| 12.700 | 0.0500 | 80 XHY | 64.627 | 43.388 | ||
| 10? | 273 | 9.271 | 0.0365 | 40 STD | 63.301 | 42.483 |
| 12.700 | 0.0500 | 60 XHY | 81.530 | 54.735 | ||
| 12? | 324 | 9.525 | 0.0375 | - | 73.824 | 49.562 |
| 12.700 | 0.0500 | - | 97.438 | 65.415 | ||
| 14? | 356 | 9.525 | 0.0375 | STD | 81.281 | 54.568 |
| 12.700 | 0.0500 | XHY | 107.381 | 72.090 | ||
| 16? | 406 | 9.525 | 0.0375 | 30 STD | 93.213 | 62.578 |
| 12.700 | 0.0500 | 40 XHY | 123.289 | 82.770 | ||
| 18? | 457 | 9.525 | 0.0375 | STD | 105.144 | 70.588 |
| 12.700 | 0.0500 | XHY | 139.198 | 93.450 | ||
| 20? | 508 | 9.525 | 0.0375 | 20 STD | 117.075 | 78.598 |
| 12.700 | 0.0500 | 30 XHY | 155.106 | 104.130 | ||
| 24? | 610 | 9.525 | 0.0375 | 20 STD | 140.093 | 64.618 |
| 12.700 | 0.0500 | XHY | 186.923 | 125.490 | ||
| 30? | 762 | 9.525 | 0.0375 | STD | 176.731 | 118.648 |
| 12.700 | 0.0500 | 20 XHY | 234.647 | 157.530 | ||
| 48? | 1219 | 9.525 | 0.0375 | STD | 284.112 | 190.073 |
| 12.700 | 0.0500 | XHY | 377.822 | 253.650 |
Cu-ni 70/30 Tube Size Chart
| Wall Thickness (WT) | Available Outside Diameters (OD) |
| 0.010" | 1/8", 1/4", 3/16", 3/8", 5/16", 1/2", 3/4", 1", 1 1/2", 2" |
| 0.012" | 1/16", 1/8", 1/4", 3/16", 3/8", 5/16" |
| 0.016" | 1/16", 1/8", 3/16" |
| 0.020" | 1/8", 3/16" |
| 0.028" | 1/8", 1/4", 3/16", 3/8", 5/16", 7/16", 1/2", 16", 5/8", 3/4", 7/8", 1", 1 1/4", 1 1/2", 1 5/8", 2", 2 1/4" |
| 0.035" | 3/16", 1/4", 5/16", 3/8", 1/2", 16", 5/8", 3/4", 7/8", 1", 1 1/8", 1 1/4", 1 1/2", 1 5/8", 2", 2 1/4" |
| 0.049" | 1/4", 5/16", 3/8", 1/2", 16", 5/8", 3/4", 7/8", 1", 1 1/4", 1 1/2", 1 5/8", 1 3/4", 2", 2 1/2", 3" |
| 0.065" | 3 1/2" |
| 0.083" | 1/2", 5/8", 1", 1 1/4", 1 1/2", 2" |
| 0.095" | 1/2", 3/4", 1", 1 1/4", 1 1/2", 2" |
| 0.109" | 1/2", 5/8", 3/4", 7/8", 1", 1 1/4", 1 1/2", 2", 2 1/4", 2 1/2", 3" |
| 0.120" | 3" |
| 0.125" | 1" |
| 0.134" | 1" |
| 0.250" | 3/4", 1", 1 1/4", 1 1/2", 2", 3", 3 1/4" |
| 0.375" | 1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1 1/4", 1 1/2", 1 5/8", 1 7/8", 2", 2 1/2", 3" |
Pressure Rating of Copper Nickel 70/30 Seamless Pipe
| Pipes O.D. (in.) | .028" | .035" | .049" | .065" | .083" | .095" | .109" | .120" |
| 1/8 | 7900 | 10100 | � | � | � | � | � | � |
| 1/4 | 3700 | 4800 | 7000 | 9500 | � | � | � | � |
| 5/16 | � | 3700 | 5400 | 7300 | � | � | � | � |
| 3/8 | � | 3100 | 4400 | 6100 | � | � | � | � |
| 1/2 | � | 2300 | 3200 | 4400 | � | � | � | � |
| 3/4 | � | � | 2200 | 3000 | 4000 | 4600 | � | � |
| 1 | � | � | 2200 | � | 2900 | 3400 | 3900 | 4300 |
Types of Cupro Nickel 70/30 Pipes & Tubes
Coiled & Capillary Tube
Heat Exchanger & Condenser Tubes
Seamless Pipes & Tubes
Welded _ ERW _ EFW Pipes
Manufacturing Process of Cupro Nickel 70/30 Pipes & Tubes
The production of Cupro Nickel 70/30 pipes and tubes is performed in the controlled and systematic way to provide high resistance to sea water corrosion, erosion, and biofouling. The alloy is made of copper and nickel, which has great mechanical strength, thermal efficiency as well as long-term durability, especially in marine and offshore conditions.
- Raw Material Selection
Copper and nickel are chosen as the main components of high purity with additions of iron and manganese that are very carefully monitored. Such ingredients increase the resistance to high-velocity seawater, erosion corrosion and the overall performance in mechanical terms. - Melting and Alloying
A homogeneous alloy is obtained by advanced melting methods including electric arc furnace or induction melting. It is a procedure that guarantees low levels of impurities, uniformity of the chemical composition as well as uniformity of the metallurgical characteristics of the material. - Hot Working and Forming
The molten alloy is poured into billets and then exposed to hot working operations like extrusion, rolling or pilgering. These operations do ensure accurate dimensional tolerances, consistent wall thickness and better grain structure of pipes and tubes. - Heat Treatment
Solution annealing is done to relieve internal stresses, increase ductility and increase corrosion resistance. The required alpha-phase structure of the alloy is maintained by controlled cooling. - Last Process and Quality Control
The last processes involve straightening, length cutting, surface finishing and stringent inspection. Non-destructive test, dimensional inspection and chemical tests assure the adherence to international standards and performance requirements.
Applications & Usage of Cupro Nickel 70/30 Pipes & Tubes
Cupro Nickel 70/30 pipes and tubes are also commonly applied in industries with the need of superb corrosion resistance, life and performance in austere operating conditions. They have low maintenance and long service life thus ideal to be applied in critical applications.
- Marine and Seawater Systems
It's widely used in shipbuilding, seawater piping, condensers and offshore structures because of being highly resistant to seawater corrosion and biofouling. - Heat exchangers and Condensers
They are used in heat exchangers, condenser tubes and cooling systems where high thermal conductivity and resistance to erosion is required. - Desalination Plants
Used in brine heaters, evaporators, and systems of seawater intake due to high tolerance in saline environments. - Oil and Gas Industry
Applied in offshore platforms, seawater injection systems and cooling lines where chlorides resistance and severe marine environment performance is needed. - Industrial Systems and Power Generation
Applied in power plants, cooling loops and industrial piping systems where reliability is needed when used under constant load.
Frequently Asked Questions (FAQ)
Cupro Nickel 70/30 pipes and tubes are copper-nickel alloy pipes containing 70% copper and 30% nickel, known for excellent corrosion resistance, high strength, and durability in seawater and industrial applications.
Cupro Nickel 70/30 has higher nickel content than 90/10, making it stronger, more resistant to seawater corrosion, and suitable for higher temperature applications, while 90/10 is more cost-effective and used for moderate environments.
Yes, Cupro Nickel 70/30 pipes are widely used in marine applications because they resist corrosion, biofouling, and erosion in seawater systems, shipbuilding, and offshore structures.
Their high nickel and copper content forms a protective surface layer, which prevents corrosion, reduces pitting, and inhibits the growth of marine organisms.
Yes, Cupro Nickel 70/30 pipes are easily welded, formed, and fabricated using standard industrial processes while maintaining their corrosion resistance and mechanical strength.
Other types of Cupro Nickel 70-30 Pipes & Tubes
Copper Nickel 2.0882 Pipe Price List, Copper Nickel 70/30 Tubing Price List India, ASTM B111 CuNi Seamless Condenser Tubes, C71500 Copper Nickel Rectangular Tubing Manufacturers in India, WNR 2.0882 CuNi Rectangular Pipes, Copper Alloy C71500 Seamless Pipes, 70-30 CuNi ERW Pipes and Tubes Supplier in India,70/30 Cupro Nickel ASTM B360 Capillary Tube, Copper Nickel 70/30 Square Pipe, ASTM B466 Seamless Copper Nickel 70-30 Pipe and Tube Exporter in India, Cupro Nickel 70-30 Round Tubing Manufacturers in Mumbai, Cupro Nickel 70-30, Cu-Ni 70-30 Round Pipe, ASTM B552 Welded Copper�Nickel 70/30 Tubes, ASTM B467 Welded Copper Nickel 70/30 Pipe.
Supplier and Exporter of Cupro Nickel 70/30 Pipes & Tubes in Cities
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Supplier and Exporter of Cupro Nickel C71500 Pipes & Tubes in Countries
Tibet, Serbia, South Korea, Singapore, Netherlands, Oman, India, Philippines, Mexico, Algeria, Spain, Slovakia, Germany, Italy, Indonesia, Bangladesh, Egypt, United States, Nigeria, Colombia, Denmark, Mexico, Costa Rica, Vietnam, Malaysia, Bhutan, Norway, Gambia, Yemen, Lithuania, Sri Lanka, Australia, Israel, Taiwan, Croatia, Bolivia, Ghana, Finland, China, Qatar, Brazil, Libya, Kuwait, Switzerland, Estonia, Azerbaijan, Hungary, Chile, Thailand, Belarus, Puerto Rico, Nigeria, Romania, Japan, Russia, South Africa, Zimbabwe, Mongolia, Namibia, France, Portugal, Ecuador, Sweden, Chile, United Arab Emirates, United Kingdom, Czech Republic, Austria, New Zealand, Bahrain, Belgium, Hong Kong, Pakistan, Canada, Kenya, Macau, Venezuela, Iraq, Gabon, Turkey, Afghanistan, Lebanon, Kazakhstan, Iran, Iran, Saudi Arabia, Ireland, Argentina, Nepal, Trinidad & Tobago,Tunisia, Angola, Poland, Ukraine, Poland, Morocco, Bulgaria, Greece, Peru, Jordan.
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