Copper Nickel 70/30 Flanges Manufacturer in India
Copper Nickel 7030 High-performance copper-nickel alloy, which is made of 70 percent copper and 30 percent nickel, is specifically designed and engineered to exhibit exceptional resistance to corrosion, biofouling, erosion and chloride-contaminated environments of the seawater. The alloy has been found to be very reliable in the marine, offshore and coastal industries because of its high mechanical strength, thermal conductivity and its long term strength. Copper Nickel 70/30 Flanges are suitable where the piping systems have structural integrity needs, have resistance to corrosion and a long life of service. Their performances are very high in salty, saline, and chemically hostile environments and thus they are very dependable and leak free when deployed in shipbuilding, offshore drilling, desalination facilities, power units, heat exchangers, cooling water units, oil and gas plants, and coastal industrial infrastructures.
What Are Copper Nickel 70/30 Flanges?
The Copper Nickel 70/30 flanges are produced based on the ASTM B466 / UNS C71500 standards, where forged and rolled copper-nickel alloy is used in order to produce the high-performance piping systems. This is further reinforced by the higher nickel percentage over 90/10 that also raises the resistance to corrosion in extreme marine and industrial environments, biofouling resistance and gives great mechanical and thermal stability. These flanges are made to suit and are specifically made to suit systems that are subjected to seawater and moisture and other hostile ocean conditions. Copper Nickel 70/30 flanges find extensive use in maritime pipelines, offshore facilities, desalination systems, shipbuilding systems, coastal generating plants, marine heat exchangers, condensers and offshore oil and gas installations where the factors of durability, corrosion resistance, and long service life are of prime importance.
Table of Contents
- Specification of Copper Nickel 70/30 Flanges
- Chemical Composition of Copper Nickel 70/30 Flanges
- Mechanical Properties Of Werkstoff Nr. 2.0882 Blind Flange
- Copper Nickel 70/30 Flanges Physical Properties
- Equivalent Grades of Copper Nickel 70/30 Flanges
- Cupro Nickel 70/30 Flange Sizes Chart
- Dimensions Chart of Copper Nickel 70/30 Blind Flanges
- Weight Chart of the Cu Ni 70/30 Flanges
- Pressure Rating Chart of Copper Nickel 70/30 Flanges
- Application Uses of Copper Nickel 70/30 Flanges
- Frequently Asked Questions (FAQ)
Specification of Copper Nickel 70/30 Flanges
| Category | Technical Specifications |
| Available Types | Threaded, Plate, Forged |
| Product Range | Socket-Weld, Weld Neck, Lap Joint, Blind, Threaded, Slip-On |
| Size Range | 1/2" To 48" |
| Bore Sizes | NPS = 10 (Largest Bore Diameter) |
| Production Technique | Forged, Heat Treated, and Machined |
| Global Standards | ANSI/ASME B16.5, B16.36, B16.47 (Series A & B), B16.48, MSS S44, ISO 70051, DIN, EN 1092, BS 4504, BS 1560-3.1, API 605, API 7S-15/43, AWWA C207, UNI, IS 2062 |
| Pressure Rating (ANSI) | 150#, 300#, 600#, 900#, 1500#, 2500# |
| Pressure Rating (JIS) | 5K, 10K, 16K, 20K, 30K, 40K, 63K |
| Face Types | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ), Lap-Joint Face (LJF), Male-Female (Large/Small), Tongue & Groove (Large/Small) |
| Temperature Limits | High: Above 200-C (400-F) for Class 150; Above 400-C (750-F) for higher classes Low: Above -29-C (-20-F) |
| Materials Manufactured | Copper Nickel, Alloy Steel, Stainless Steel, Carbon Steel, Duplex & Super Duplex, Inconel, Hastelloy, Mild Steel, Cast Iron, Wrought Iron |
| Applications | Oil & Gas, Power Plants (Nuclear/Fossil Fuel), Waterworks/Municipal Systems, Food Processing |
Chemical Composition of Copper Nickel 70/30 Flanges
This material is a mix of different metals which detailed information is provided in the table.
| Grade | Cu | Mn | Pb | Ni | Fe | Zn |
| 70/30 Copper Nickel Flanges | 65 minimum | 1.0 maximum | 0.05 maximum | 29-33 maximum | 0.4-1.0 maximum | 1 maximum |
Mechanical Properties Of Werkstoff Nr. 2.0882 Blind Flange
The mechanical properties data table given below consists of different things that help to choose the best material according to your requirements.
| Density | Yield Strength (0.2% Offset) | Elongation | Melting Point | Tensile Strength |
| 0.323 lb/in- at 68 -F | 20,000 psi | 30% | 2260-F | 50,000 psi |
Copper Nickel 70/30 Flanges Physical Properties
The copper-nickel 70/30 flags come with many physical properties that are given below.
| Property | Density (kg/dm-) | Melting Range (-C) | Specific Heat (J/kg-K) | Thermal Conductivity (W/m-K) | Coeff. of Linear Expansion (10?6/-K) | Electrical Resistivity (-O-cm) | Modulus of Elasticity (GPa) | Modulus of Rigidity (GPa) |
| Value | 8.95 | 1170-1240 | 377 | 29 | 16 | 34 | 152 | 56 |
Equivalent Grades of Copper Nickel 70/30 Flanges
This copper nickel 70/30 flanges are manufactured in different grades, and some of the common ones are given below.
| Grade | WNR. | UNS | AFNOR | EN |
| Cupro Nickel 70/30 | 2.0882 | C71500 | Z2NCUD31-20 | AZNiCr20CuMo |
Cupro Nickel 70/30 Flange Sizes Chart
The different sizes of this material are listed in the following table.
| NPS (inch) | Flange Diameter (inch) | Bolt Circle (inch) | Number of Bolts | Bolts Diameter (inch) | Bolt Holes Diameter (inch) |
| 1/4" | 3 3/8 | 2 1/4 | 4 | 1/2 | 0.62 |
| 1/2" | 3 1/2 | 2 3/8 | 4 | 1/2 | 0.62 |
| 3/4" | 3 7/8 | 2 3/4 | 4 | 1/2 | 0.62 |
| 1" | 4 1/4 | 3 1/8 | 4 | 1/2 | 0.62 |
| 1 1/4" | 4 5/8 | 3 1/2 | 4 | 1/2 | 0.62 |
| 1 1/2" | 5 | 3 7/8 | 4 | 1/2 | 0.62 |
| 2" | 6 | 4 3/4 | 4 | 5/8 | 0.75 |
| 2 1/2" | 7 | 5 1/2 | 4 | 5/8 | 0.75 |
| 3" | 7 1/2 | 6 | 4 | 5/8 | 0.75 |
| 3 1/2" | 8 1/2 | 7 | 8 | 5/8 | 0.75 |
| 4" | 9 | 7 1/2 | 8 | 5/8 | 0.75 |
| 5" | 10 | 8 1/2 | 8 | 3/4 | 0.88 |
| 6" | 11 | 9 1/2 | 8 | 3/4 | 0.88 |
| 8" | 13 1/2 | 11 3/4 | 8 | 3/4 | 0.88 |
| 10" | 16 | 14 1/4 | 12 | 7/8 | 1 |
| 12" | 19 | 17 | 12 | 7/8 | 1 |
| 14" | 21 | 18 3/4 | 12 | 1 | 1.12 |
| 16" | 23 1/2 | 21 1/4 | 16 | 1 | 1.12 |
| 18" | 25 | 22 3/4 | 16 | 1 1/8 | 1.25 |
| 20" | 27 1/2 | 25 | 20 | 1 1/8 | 1.25 |
| 24" | 32 | 29 1/2 | 20 | 1 1/4 | 1.38 |
Dimensions Chart of Copper Nickel 70/30 Blind Flanges
The detailed dimension chart of this material is given below. For more information, contact us.
| Pipe Dia (inch) | DN (mm) | Thickness (min) | OD | Raised Face Dia | Hub Diameter | Thread Length | Length Hub (Y) | LBS | KG |
| 1/2" | 15 | 11.20 | 89.0 | 35.10 | 30.20 | 15.70 | 15.70 | 0.9 | 0.4 |
| 3/4" | 20 | 12.70 | 98.5 | 42.90 | 38.10 | 15.70 | 15.70 | 1.5 | 0.7 |
| 1" | 25 | 14.20 | 108.0 | 50.80 | 49.30 | 17.50 | 17.50 | 1.8 | 0.8 |
| 1-1/4" | 32 | 15.70 | 117.5 | 63.50 | 58.70 | 20.60 | 20.60 | 2.6 | 1.2 |
| 1-1/2" | 40 | 17.50 | 127.0 | 73.20 | 65.00 | 22.40 | 22.40 | 3.3 | 1.5 |
| 2" | 50 | 19.10 | 152.5 | 91.90 | 77.70 | 25.40 | 25.40 | 5.1 | 2.3 |
| 2-1/2" | 65 | 22.40 | 178.0 | 104.60 | 90.40 | 28.40 | 28.40 | 8.1 | 3.7 |
| 3" | 80 | 23.90 | 190.5 | 127.00 | 108.00 | 30.20 | 30.20 | 9.0 | 4.1 |
| 3-1/2" | 90 | 23.90 | 216.0 | 139.70 | 122.20 | 31.80 | 31.80 | 11.2 | 5.1 |
| 4" | 100 | 23.90 | 228.5 | 157.20 | 134.90 | 33.30 | 33.30 | 13.0 | 5.9 |
| 5" | 125 | 23.90 | 254.0 | 185.70 | 163.60 | 36.60 | 36.60 | 15.4 | 7.0 |
| 6" | 150 | 25.40 | 279.5 | 215.90 | 192.00 | 39.60 | 39.60 | 18.5 | 8.4 |
| 8" | 200 | 28.40 | 343.0 | 269.70 | 246.10 | 44.50 | 44.50 | 28.6 | 13.0 |
| 10" | 250 | 30.20 | 406.5 | 323.90 | 304.80 | 49.30 | 49.30 | 39.5 | 18.0 |
| 12" | 300 | 31.80 | 482.5 | 381.00 | 365.30 | 55.60 | 55.60 | 64.0 | 29.0 |
| 14" | 350 | 35.10 | 533.5 | 412.80 | 400.10 | 57.20 | 57.20 | 86.0 | 39.0 |
| 16" | 400 | 36.60 | 597.0 | 469.90 | 457.20 | 63.50 | 63.50 | 103.0 | 47.0 |
| 18" | 450 | 39.60 | 635.0 | 533.40 | 505.00 | 68.30 | 68.30 | 126.0 | 57.0 |
| 20" | 500 | 42.90 | 698.5 | 584.20 | 558.80 | 73.20 | 73.20 | 167.0 | 76.0 |
| 24" | 600 | 47.80 | 813.0 | 692.20 | 663.40 | 82.60 | 82.60 | 214.0 | 97.0 |
Weight Chart of the Cu Ni 70/30 Flanges
The copper-nickel 70/30 comes in different sizes and charts. The detailed weight chart table of this material is listed below.
| Pipe Size (NPS) | Slip On (SORF) | Socket Weld (SWRF) | Threaded (NPT) | Lap Joint (Loose) | Weld Neck (WNRF) | Blind (BLRF) |
| 1/2" | 1 | 2 | 1 | 1 | 2 | 2 |
| 3/4" | 2 | 2 | 2 | 1 | 2 | 2 |
| 1" | 2 | 2 | 2 | 2 | 3 | 2 |
| 1 1/4" | 3 | 3 | 3 | 3 | 3 | 3 |
| 1 1/2" | 3 | 3 | 3 | 3 | 4 | 4 |
| 2" | 5 | 5 | 5 | 5 | 6 | 5 |
| 2 1/2" | 8 | 8 | 8 | 8 | 10 | 7 |
| 3" | 9 | 9 | 9 | 9 | 11.5 | 9 |
| 3 1/2" | 11 | 11 | 11 | 11 | 12 | 13 |
| 4" | 13 | 13 | 13 | 13 | 16.5 | 17 |
| 5" | 15 | 15 | 15 | 15 | 21 | 20 |
| 6" | 19 | 19 | 19 | 19 | 26 | 27 |
| 8" | 30 | 30 | 30 | 30 | 42 | 47 |
| 10" | 43 | 43 | 43 | 43 | 54 | 70 |
| 12" | 64 | 64 | 64 | 64 | 88 | 123 |
| 14" | 90 | 90 | 90 | 90 | 114 | 140 |
| 16" | 106 | 98 | 98 | 140 | 140 | 180 |
| 18" | 130 | 130 | 130 | 160 | 165 | 220 |
| 20" | 165 | 165 | 165 | 195 | 197 | 285 |
| 22" | 185 | 185 | 185 | 245 | 225 | 355 |
| 24" | 220 | 220 | 220 | 275 | 268 | 430 |
Pressure Rating Chart of Copper Nickel 70/30 Flanges
Before buying any material, it's important to know its pressure capability. So the table provides the detailed information on the pressure rating of this material.
| Temp (-C) | Class 150 | Class 300 | Class 400 | Class 600 | Class 900 | Class 1500 | Class 2500 |
| -29 to 38 | 20.0 | 51.7 | 68.9 | 103.4 | 155.1 | 258.6 | 430.9 |
| 50 | 19.5 | 51.7 | 68.9 | 103.4 | 155.1 | 258.6 | 430.9 |
| 100 | 17.7 | 51.5 | 68.7 | 103.0 | 154.6 | 257.6 | 429.4 |
| 150 | 15.8 | 50.3 | 66.8 | 100.3 | 150.6 | 250.8 | 418.2 |
| 200 | 13.8 | 48.6 | 64.8 | 97.2 | 145.8 | 243.4 | 405.4 |
| 250 | 12.1 | 46.3 | 61.7 | 92.7 | 139.0 | 231.8 | 386.2 |
| 300 | 10.2 | 42.9 | 57.0 | 85.7 | 128.6 | 214.4 | 357.1 |
| 325 | 9.3 | 41.4 | 55.0 | 82.6 | 124.0 | 206.6 | 344.3 |
| 350 | 8.4 | 40.3 | 53.6 | 80.4 | 120.7 | 201.1 | 335.3 |
| 375 | 7.4 | 38.9 | 51.6 | 77.6 | 116.5 | 194.1 | 323.2 |
| 400 | 6.5 | 36.5 | 48.9 | 73.3 | 109.8 | 183.1 | 304.9 |
| 425 | 5.5 | 35.2 | 46.5 | 70.0 | 105.1 | 175.1 | 291.6 |
| 450 | 4.6 | 33.7 | 45.1 | 67.7 | 101.4 | 169.0 | 281.8 |
| 475 | 3.7 | 31.7 | 42.3 | 63.4 | 95.1 | 158.2 | 263.9 |
| 500 | 2.8 | 28.2 | 37.6 | 56.5 | 84.7 | 140.9 | 235.0 |
| 538 | 1.4 | 16.5 | 22.1 | 33.1 | 49.6 | 82.7 | 137.9 |
| 550 | - | 13.9 | 18.6 | 27.9 | 41.8 | 69.7 | 116.2 |
| 575 | - | 9.4 | 12.6 | 18.9 | 28.3 | 47.2 | 78.6 |
| 600 | - | 6.6 | 8.9 | 13.3 | 19.9 | 33.2 | 55.3 |
| 625 | - | 5.1 | 6.8 | 10.3 | 15.4 | 25.7 | 42.8 |
| 650 | - | 4.7 | 6.3 | 9.5 | 14.2 | 23.6 | 39.4 |
Application Uses of Copper Nickel 70/30 Flanges
The Copper Nickel 70/30 flanges are mostly used in industries where there is corrosion resistance, strength and long service life of the flange is required in a highly aggressive environment. They are usually used in petrochemical, chemical, oil and gas, and gas processing sectors of processing lines, offshore units, seawater tasks, and fluid transfer pipelines. They are applied in the condenser systems, cooling water lines, and heat exchangers that are subjected to continuous heat and moisture in the power generation sector. Food processing industries, chemical and water handling systems at paper industries, and fertilizer industries are also applications of these flanges using hygienic piping, and processing and transfer lines in corrosive media environments, which makes Copper Nickel 70/30 flanges a great option in challenging industrial applications.
Frequently Asked Questions (FAQ)
Copper Nickel 70/30 flanges are flanges made from an alloy of 70% copper and 30% nickel, known for high strength, durability, and excellent corrosion resistance in marine and industrial environments.
Yes, they are ideal for seawater systems because they offer excellent resistance to seawater corrosion, erosion, and biofouling.
The most common types include Weld Neck, Slip-On, Blind, Socket Weld, Threaded, and Ring Type Joint (RTJ) flanges.
Yes, they can be manufactured in custom sizes, dimensions, and specifications as per project requirements.
They are welded using standard nickel-copper welding electrodes and procedures, usually with TIG or MIG welding for the best quality and corrosion resistance.
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