Copper Nickel Forged Fittings
ARK Stainless Inc. manufactures and supplies Copper Nickel Forged Fittings for seawater lines, marine piping, heat exchanger systems, offshore service and other corrosive process applications where ordinary carbon steel or standard stainless steel fittings may not offer the same level of long-term resistance. Our range includes Copper Nickel 90/10 Forged Fittings and Copper Nickel 70/30 Forged Fittings in socket weld and threaded forms for high-pressure piping systems.
Copper nickel forged fittings are widely used in systems handling seawater, brackish water, cooling water, saline process media and marine service fluids because copper-nickel alloys are known for their resistance to seawater corrosion, impingement attack and biofouling. In marine and offshore applications, these fittings are often selected for their ability to perform in harsh environments where salt deposits, moisture, chlorides and continuous water exposure can shorten the life of conventional piping materials.
We supply forged elbows, tees, couplings, unions, caps, plugs, bushings, crosses, reducers, swage nipples and pipe nipples in Cu-Ni 90/10 (UNS C70600) and Cu-Ni 70/30 (UNS C71500) grades. These fittings are produced in accordance with recognised standards such as ASTM B467 / ASME SB467, ASME B16.11, MSS SP-79, MSS SP-83, MSS SP-95, MSS SP-97 and BS 3799, depending on the fitting type and project requirement.
Copper Nickel 90/10 Forged Fittings, Copper Nickel 70/30 Forged Fittings, UNS C70600 forged fittings, ASTM B467 Copper Nickel forged fittings, UNS C71500 forged fittings, Copper Nickel socket weld and threaded forged fittings Manufacturer & Supplier in Mumbai, India
Chemical Composition of Cupro Nickel Forged Fittings
| Grade |
Cu |
Mn |
Pb |
Ni |
Fe |
Zn |
| Cupro Nickel 70/30 |
65 min |
1.0 max |
0.05 max |
29-33 max |
0.4-1.0 max |
1 max |
| Cupro Nickel 90/10 |
88.6 |
1.0 max |
0.05 max |
9 - 11 max |
1.8 max |
1 max |
Mechanical Properties Of Cupro Nickel Forged Fittings
| Grade |
Density |
Melting Point |
Tensile Strength |
Yield Strength (0.2% Offset) |
Elongation |
| Cupro Nickel 70/30 |
0.323 lb/in³ at 68°F |
2260°F |
50000 psi |
20000 psi |
30% |
| Cupro Nickel 90/10 |
0.323 lb/in³ at 68°F |
2260°F |
50000 psi |
20000 psi |
30% |
Copper Nickel 70/30 Forged Fittings
Copper Nickel UNS C71500 90° Elbows, Cu-Ni 70/30 Forged Socket Weld Fittings, Copper Nickel DIN 2.0882 Screwed-Threaded Fittings, 70/30 Cupro Nickel 45° Elbows, Copper Nickel 70/30 Forged Unions, CuNi 70/30 Threaded Fittings, UNS C71500 Forged Tees, Copper Nickel 70-30 Socket Weld Couplings, Cupro Nickel 70/30 Forged Crosses, Cu-Ni 70/30 Threaded Bushings, Copper Nickel 70/30 Forged Socket Weld Full Couplings, Copper Nickel 70/30 Forged Fittings Manufacturer, Supplier & Exporter in India.
Copper Nickel 70/30 Forged Fittings are used in more demanding seawater and marine applications where higher nickel content is preferred for added strength and improved resistance to corrosion, erosion and high-velocity seawater service. This alloy contains roughly 70% copper and 30% nickel and is commonly specified for offshore platforms, seawater intake systems, condenser tubing circuits, brine lines, shipboard piping and marine engineering applications.
Compared to 90/10 copper nickel, Cu-Ni 70/30 forged fittings are generally selected for more aggressive service conditions, especially where piping systems are exposed to higher flow rates, more severe seawater conditions or higher design demands. The alloy performs well in applications where resistance to impingement, seawater corrosion and marine fouling is important for long service life.
We supply UNS C71500 forged fittings in threaded and socket weld forms for industrial and marine buyers looking for dependable copper nickel fittings for corrosive service piping systems.
Copper Nickel DIN 2.0882 Street Elbows, ASME SB467 Copper Nickel 70/30 Bushings, 70-30 Cu-Ni Forged Equal Tees, Cupro Nickel UNS C71500 Socket Weld Fittings, Copper Nickel 70/30 Forged Elbows, UNS C71500 CuNi Pipe Nipples Supplier, 70/30 Cupro Nickel Forged Couplings Exporter, Cu-Ni 70/30 Pipe Caps, ASTM B467 Copper Nickel 70/30 Forged Crosses, Copper Nickel 70/30 Forged Fittings Manufacturer, Supplier & Exporter in Mumbai, India.
70/30 Cupro Nickel Forged Fittings Equivalent Grades
| STANDARD |
UNS |
WNR. |
EN |
AFNOR |
| Cupro Nickel 70/30 |
C71500 |
2.0882 |
NiCr20CuMo |
Z2NCUD31-20AZ |
Specification of Nickel 70/30 Forged Fittings
- Specification: ASTM B467 / ASME SB467
- Dimension Standard: ASME B16.11, MSS-SP-79, MSS-SP-83, MSS-SP-95, MSS-SP-97, BS3799
- Size: 1/8" NB to 4" NB
- Type: Socketweld Fittings, Screwed-Threaded Fittings (NPT or PT Type)
- Rating Pressure:
- Threaded End – 2000 / 3000 / 6000 LBS
- Socket-weld End – 3000 / 6000 / 9000 LBS
Different Types of Copper Nickel 70/30 Forged Fittings
- Copper Nickel 70/30 Socket Weld Reducing Tees
- Cupro Nickel 70/30 Threaded Hex Plugs
- ASTM B467 Cu-Ni 70/30 Forged 90° Elbows
- DIN 2.0882 Copper Nickel Threaded Fittings
- ASME B16.11 CuNi 70/30 Forged Equal Tees
- Copper Nickel 70/30 Screwed-Threaded Street Elbows
- UNS C71500 Cupro Nickel Forged Bushings
- ASTM B467 Copper Nickel 70/30 Socket Weld Crosses
- Cu-Ni 70/30 Forged Reducing Couplings
- Cupro Nickel 70-30 Forged Square Head Plugs
- Copper Nickel DIN 2.0882 Socket Weld Full Couplings
- 70/30 Cu-Ni Threaded Unions
- Cupro Nickel UNS C71500 Socket Weld Half Couplings
- Copper Nickel 70/30 Forged Pipe Caps
- CuNi C71500 Forged 45° Elbows
- ASTM B467 Cu-Ni 70/30 Threaded Hex Bushings
- Copper Nickel 70/30 Socket Weld Unions
- Cupro Nickel 70/30 High Pressure Forged Fittings
- UNS C71500 Copper Nickel Screwed-Threaded Fittings
- ASTM B467 Copper Nickel 70/30 Forged Pipe Fittings
- Copper Nickel 70/30 Forged Fittings Manufacturer in India
- Cupro Nickel 70/30 Socket Weld Fittings Supplier
- UNS C71500 Threaded Fittings Exporter from India
- Copper Nickel 70/30 Forged Fittings Supplier
Copper Nickel 90/10 Forged Fittings
Cupro Nickel UNS C70600 Forged Reducing Couplings, Copper Nickel DIN 2.0872 Socket Weld Crosses, 90/10 Cu-Ni Threaded Hex Plugs, Cupro Nickel 90/10 Forged Equal Tees, CuNi 90/10 Socket Weld Half Couplings, Copper Nickel UNS C70600 Threaded Bushings, 90-10 Cupro Nickel Forged Pipe Caps, Copper Nickel 90/10 Socket Weld Reducing Tees, Cu-Ni DIN 2.0872 Threaded Unions, UNS C70600 Forged Street Elbows, Cupro Nickel 90/10 Socket Weld Couplings, Copper Nickel 90-10 Screwed-Threaded Fittings, Copper Nickel 90/10 Forged Fittings Manufacturer, Supplier & Exporter in India.
Copper Nickel 90/10 Forged Fittings are manufactured from an alloy containing approximately 90% copper and 10% nickel, generally with controlled additions of iron and manganese to improve strength and corrosion resistance in marine service. This grade is widely used for shipbuilding, desalination plants, condenser piping, offshore cooling water systems, firewater lines, marine heat exchangers and coastal process plants.
Cu-Ni 90/10 forged fittings are commonly chosen where the service environment involves clean seawater, moderate flow rates, salt-laden atmosphere or marine cooling circuits. The alloy offers good resistance to general corrosion, seawater attack and biofouling, which makes it a practical choice for long-term service in coastal and offshore piping systems.
ARK Stainless Inc. supplies Copper Nickel 90/10 socket weld fittings and threaded forged fittings in standard forms such as elbows, tees, couplings, caps, unions, plugs, bushings and nipples for marine and industrial piping applications.
ASTM B467 Cupro Nickel 90/10 Threaded Reducing Coupling, Copper Nickel DIN 2.0872 Socket Weld Half Coupling, UNS C70600 Cu-Ni Hex Plug, Cupro Nickel 90/10 Forged Reducing Tee, Copper Nickel 90-10 Socket Weld Union, CuNi 90/10 Threaded Cross, UNS C70600 Copper Nickel Square Head Plug Supplier, 90/10 Cu-Ni Socket Weld Full Coupling Exporter, Cupro Nickel 2.0872 Threaded Cap, ASTM B467 Copper Nickel 90/10 Forged Fittings Manufacturer in Mumbai, India.
Standard Specification for Cupro Nickel 90/10 Forged Fittings
- Material Grade: Cupro Nickel 90/10 / Copper Nickel 90/10 / Cu-Ni 90/10
- UNS: C70600
- DIN: 2.0872
- Specifications: ASTM B467 / ASME SB467
- Standard: ASME B16.11, MSS SP-79, MSS SP-83, MSS SP-95, MSS SP-97, BS 3799
- Size: 1/8” NB to 4” NB
- Threaded Class: 2000 LBS, 3000 LBS, 6000 LBS
- Socket Weld Class: 3000 LBS, 6000 LBS, 9000 LBS
- Connection Type: Socket Weld & Screwed-Threaded
- Material Description: 90% Copper – 10% Nickel Copper-Nickel Alloy
90/10 Copper Nickel Forged Fittings Equivalent Grades
| STANDARD |
WERKSTOFF NR. |
UNS |
| Copper Nickel 90/10 |
2.0872 |
C70600 |
Chemical Composition of Cupro Nickel 90 / 10 Forged Threaded Fittings
| Grade |
Cu |
Mn |
Pb |
Ni |
Fe |
Zn |
| Cu-Ni 90/10 |
88.6 min |
1.0 max |
.05 max |
9-11 max |
1.8 max |
1 max |
Mechanical Properties of Cupro Nickel 90 / 10 Forged Fittings
| Element |
Density |
Melting Point |
Tensile Strength |
Yield Strength (0.2%Offset) |
Elongation |
| Copper Nickel 90/10 |
0.323 lb/in3 at 68 F |
2260 F |
50000 psi |
20000 psi |
30 % |
Different Types of Cupro Nickel 90/10 Forged Fittings
- ASTM B467 Cupro Nickel 90/10 Socket Weld Reducing Tees
- UNS C70600 Copper Nickel Threaded Hex Bushings
- Cu-Ni 90/10 Forged 45° Elbows
- DIN 2.0872 Cupro Nickel Socket Weld Crosses
- Copper Nickel 90/10 Threaded Reducing Couplings
- ASME B16.11 CuNi 90/10 Forged Unions
- UNS C70600 Cupro Nickel Socket Weld Half Couplings
- 90/10 Copper Nickel Threaded Square Head Plugs
- ASTM B467 Cu-Ni 90/10 Forged Pipe Caps
- DIN 2.0872 Copper Nickel Socket Weld Equal Tees
- Cupro Nickel 90/10 Threaded Street Elbow
- UNS C70600 CuNi Socket Weld Full Couplings
- Copper Nickel 90-10 Forged Threaded Crosses
- ASTM B467 Cupro Nickel 90/10 Socket Weld Couplings
- Cu-Ni 90/10 Threaded Hex Plugs
- DIN 2.0872 Copper Nickel Forged Reducing Fittings
- UNS C70600 Cupro Nickel Screwed-Threaded Fittings
- ASME B16.11 Cu-Ni 90/10 High Pressure Forged Fittings
- Copper Nickel 90/10 Forged Fittings Manufacturer in India
- Cupro Nickel 90/10 Socket Weld Fittings Supplier
- UNS C70600 Copper Nickel Threaded Fittings Exporter from India
- Cupro Nickel 90/10 Forged Fittings Manufacturer
Difference Between Copper Nickel 90/10 and Copper Nickel 70/30 Forged Fittings
Both grades are used in marine, offshore and seawater service, but the selection usually depends on the operating conditions of the system.
Cu-Ni 90/10 Forged Fittings
- Grade: UNS C70600
- Typical use: cooling water systems, desalination units, condensers, shipbuilding, seawater piping
- Preferred where good seawater corrosion resistance is required, with a practical balance of cost and performance
- Common for general marine and coastal piping service
Cu-Ni 70/30 Forged Fittings
- Grade: UNS C71500
- Typical use: high-velocity seawater lines, offshore piping, marine condensers, brine systems, heavy-duty marine service
- Offers higher strength and improved resistance in more severe seawater environments
- Usually selected for more demanding marine and offshore conditions
Types of Copper Nickel Forged Fittings
We manufacture and supply a complete range of Copper Nickel threaded forged fittings and Copper Nickel socket weld forged fittings in standard industrial forms.
- Copper Nickel Forged Elbow
- Copper Nickel Forged Tee
- Copper Nickel Forged Cross
- Copper Nickel Forged Full Coupling
- Copper Nickel Forged Half Coupling
- Copper Nickel Forged Union
- Copper Nickel Forged Pipe Cap
- Copper Nickel Forged Plug
- Copper Nickel Forged Bushing
- Copper Nickel Forged Pipe Nipple
- Copper Nickel Forged Swage Nipple
- Copper Nickel Forged Reducing Coupling
- Copper Nickel Forged Branch Outlet
- Copper Nickel Forged Elbow Outlet
- Copper Nickel Forged Lateral Outlet
Copper Nickel Threaded Forged Fittings
We supply Copper Nickel threaded forged fittings for applications where threaded end connections are required for compact piping layouts, maintenance access or smaller bore lines.
- Copper Nickel Threaded 90 Degree Elbow
- Copper Nickel Threaded 45 Degree Elbow
- Copper Nickel Threaded Equal Tee
- Copper Nickel Threaded Unequal Tee
- Copper Nickel Threaded Equal Cross
- Copper Nickel Threaded Unequal Cross
- Copper Nickel Threaded Full Coupling
- Copper Nickel Threaded Half Coupling
- Copper Nickel Threaded Reducing Coupling
- Copper Nickel Threaded Cap
- Copper Nickel Threaded Plug
- Copper Nickel Threaded Bushing
- Copper Nickel Threaded Union
- Copper Nickel Threaded Pipe Nipple
- Copper Nickel Threaded Hex Nipple
- Copper Nickel Threaded Swage Nipple
- Copper Nickel Threaded Street Elbow
- Copper Nickel Threaded Bull Plug
- Copper Nickel Threaded Adapter
- Copper Nickel Threaded Branch Outlet
Copper Nickel Socket Weld Forged Fittings
We also manufacture Copper Nickel socket weld forged fittings for higher pressure systems, where a welded connection is preferred over threaded joints.
- Copper Nickel Socket Weld 90 Degree Elbow
- Copper Nickel Socket Weld 45 Degree Elbow
- Copper Nickel Socket Weld Equal Tee
- Copper Nickel Socket Weld Unequal Tee
- Copper Nickel Socket Weld Equal Cross
- Copper Nickel Socket Weld Unequal Cross
- Copper Nickel Socket Weld Full Coupling
- Copper Nickel Socket Weld Half Coupling
- Copper Nickel Socket Weld Pipe Cap
- Copper Nickel Socket Weld Union
- Copper Nickel Socket Weld Reducer Insert
- Copper Nickel Socket Weld Branch Outlet
- Copper Nickel Socket Weld Elbow Outlet
- Copper Nickel Socket Weld Pipe Nipple
- Copper Nickel Socket Weld Swage Nipple
- Copper Nickel Socket Weld Boss
Applications of Copper Nickel Forged Fittings
Copper nickel forged fittings are commonly used in piping systems where seawater corrosion resistance, marine durability and reliable service in saline environments are important.
- Marine piping systems
- Shipbuilding and ship repair
- Offshore platforms
- Seawater cooling systems
- Desalination plants
- Condenser and heat exchanger systems
- Coastal power plants
- Firewater and seawater utility lines
- Pumping and circulation systems
- Oil and gas offshore installations
- Chemical processing plants handling saline media
- Brine service and saltwater transfer lines
90/10 Cupro Nickel Forged Fittings Equivalent Grades
| STANDARD |
UNS |
WNR. |
EN |
AFNOR |
| Cupro Nickel 90/10 |
C70600 |
2.0872 |
NiCr20CuMo |
Z2NCUD31-20AZ |
Specification of Nickel 90/10 Forged Fittings
- Specification: ASTM B467 / ASME SB467
- Dimension Standard: ASME B16.11, MSS-SP-79, MSS-SP-83, MSS-SP-95, MSS-SP-97, BS3799
- Size: 1/8" NB to 4" NB
- Type: Socketweld Fittings, Screwed-Threaded Fittings (NPT or PT Type)
- Rating Pressure:
- Threaded End – 2000 / 3000 / 6000 LBS
- Socket-weld End – 3000 / 6000 / 9000 LBS
Difference Between Copper Nickel 90/10 and 70/30 Forged Fittings
| Property |
Copper Nickel 90/10 Forged Fittings |
Copper Nickel 70/30 Forged Fittings |
| Alloy Composition |
Approx. 90% Copper, 10% Nickel |
Approx. 70% Copper, 30% Nickel |
| UNS Grade |
C70600 |
C71500 |
| Corrosion Resistance in Seawater |
Very good |
Higher than 90/10 in more severe seawater conditions |
| Resistance to High-Velocity Seawater |
Good |
Better suited for higher flow velocity and more aggressive marine service |
| Strength |
Good |
Higher compared to 90/10 |
| Applications |
Shipbuilding, seawater lines, marine cooling water systems, condenser systems |
Offshore piping, marine condensers, desalination plants, brine lines, severe marine service |