Copper Nickel Products — Cu-Ni Pipes, Tubes, Flanges & Fittings Manufacturer in India
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Corrosion-proof performance for seawater, desalination, power and offshore systems — engineered to ASTM, ASME, DIN, EN, BS & JIS standards.
✓ ISO 9001-aligned quality system ✓ Ready stock in Mumbai
✓ ASTM / ASME / DIN / EN test certificates ✓ 100+ industrial clients worldwide
✓ Response within 24 hours ✓ Custom sizes & shapes
Kalpataru Piping is a trusted manufacturer, stockist and exporter of high-integrity Copper Nickel products in 90/10, 70/30 and 95/5 grades. From single-length tubing to bulk marine piping packages, we ship certified Cu-Ni material worldwide with full traceability.
Copper Nickel Alloy Supplier & Exporter in India
Copper nickel (or Cu-Ni) is a copper-based alloy containing nickel and minute amounts of carefully controlled iron and manganese. The nickel content — with tightly controlled iron and manganese — gives Cu-Ni its seawater corrosion resistance, natural anti-biofouling behaviour, thermal stability and easy weldability., natural resistance to biofouling, high thermal stability, and excellent weldability. Thus, cupronickel is the material of choice for marine engineering, desalination plants, offshore platforms, power generation condensers, and chemical processing lines where failure is not an option and contact with salt water is continual.
Kalpataru Piping offers the entire range of copper-nickels: pipes, tubes, plates, sheets, coils, round bars, forged and butt-welded fittings, and fasteners. All heats are manufactured and tested to international standards like ASTM, ASME, DIN, EN, BS, and JIS and sent out with 100% material traceability Certificates of Test. We provide a range of capacities and custom fabrication, along with a global delivery network, giving procurement teams, EPC contractors, and shipbuilders the ability to source the right Cu-Ni grade—fast, certified, and competitively priced. From just a few meters of 90/10 condenser tube to a complete 70/30 seawater piping package, we are able to provide reliable materials with responsive technical support.
Table of Contents
- Copper Nickel Products List
- Specifications of Copper Nickel Products
- Chemical Composition of Copper Nickel
- Mechanical Properties of Copper Nickel
- Physical Properties of Copper Nickel Products
- International Equivalent Grades
- Cupro Nickel Price in India
- Copper Nickel Applications & Industries
- Copper Nickel 90/10 vs 70/30
- Manufacturing Process & Quality Commitment
- Certifications & Standards
- FAQs About Copper Nickel Products
Copper Nickel Products List
- Specifications
- Chemical Composition
- Mechanical Properties
- Physical Properties
- Equivalent International Grades
- Price
- Comparision
Copper Nickel Products Specifications at a Glance
|
Parameter |
Details |
|---|---|
|
Product Type |
Copper Nickel (Cupronickel / Cu-Ni Alloy) |
|
Available Grades |
90/10, 70/30, 95/5 |
|
UNS Designations |
C70600, C70620, C71500, C71520, C71640, C70400 |
|
Forms Available |
Pipes, Tubes, Plates, Sheets, Coils, Round Bars, Flanges, Fittings, Fasteners |
|
Composition |
~66–90% Copper, 5–30% Nickel, controlled Fe & Mn |
|
Density |
8.9 – 8.95 g/cm³ |
|
Operating Temperature |
Up to 400 °C (750 °F) |
|
Key Advantages |
Seawater corrosion resistance, anti-biofouling, high thermal stability, easy welding |
|
Limitations |
Higher cost than carbon/stainless steel; lower machinability |
|
Standards |
ASTM, ASME, DIN, EN, BS, JIS, ISO |
|
Applications |
Firewater & seawater systems, condensers, heat exchangers, offshore & marine piping |
Copper Nickel Products Chemical Composition (%)
Nickel plus tightly controlled iron and manganese drive the strength and corrosion behaviour of each grade.
|
Element |
90/10 (C70600) |
70/30 (C71500) |
95/5 (C70400) |
|---|---|---|---|
|
Copper (Cu) |
Remainder |
Remainder |
Remainder |
|
Nickel (Ni) |
9.0 – 11.0 |
29.0 – 33.0 |
4.8 – 6.2 |
|
Iron (Fe) |
1.0 – 1.8 |
0.4 – 1.0 |
1.3 – 1.7 |
|
Manganese (Mn) |
1.0 max |
1.0 max |
0.3 – 0.8 |
|
Zinc (Zn) |
0.05 max |
0.10 max |
— |
|
Lead (Pb) |
0.05 max |
0.05 max |
0.05 max |
Mechanical Properties of Copper Nickel Products
|
Property |
90/10 CuNi |
70/30 CuNi |
|---|---|---|
|
Tensile Strength (MPa) |
380 – 450 (min ~275) |
520 – 600 (min ~360) |
|
Yield Strength (MPa) |
130 – 220 (min ~105) |
250 – 320 (min ~125) |
|
Elongation (%) |
30 – 45 |
25 – 40 |
|
Hardness (HB) |
70 – 90 |
100 – 120 |
|
Young’s Modulus (GPa) |
120 – 140 |
150 – 156 |
Copper Nickel Products Physical Properties
|
Property |
90/10 CuNi |
70/30 CuNi |
Unit |
|---|---|---|---|
|
Density |
8.9 |
8.94 |
g/cm³ |
|
Melting Point |
1100 – 1145 |
1170 – 1240 |
°C |
|
Thermal Conductivity |
40 – 50 |
25 – 30 |
W/m·K |
|
Electrical Resistivity |
0.19 |
0.375 |
µΩ·m (approx.) |
|
Specific Heat |
377 |
377 |
J/kg·K |
Equivalent International Grades
|
Standard / Country |
90/10 CuNi |
70/30 CuNi |
|---|---|---|
|
ASTM (USA) |
C70600 / B111 |
C71500 / B171 |
|
EN / DIN (Germany) |
CuNi10Fe1Mn (2.0872) |
CuNi30Mn1Fe (2.0882) |
|
BS (UK) |
CN102 / 2871 |
CN107 / 1400 |
|
ISO |
CuNi10Fe1Mn |
CuNi30Mn1Fe |
|
JIS (Japan) |
C7060 |
C7150 |
|
Trade Name |
Kunifer 10 |
Kunifer 30 |
Cupro Nickel Price in India Per Kg (Indicative)
Cupronickel is priced against live LME copper and nickel, so rates move daily. The figures below are indicative reference prices — contact us for a firm, size-specific quotation.
| Grade | Indicative Price (USD) | Indicative Price (INR) |
|---|---|---|
| Copper Nickel 90/10 | ≈ $13 – 14 / kg | ≈ ₹1,050 – 1,150 / kg |
| Copper Nickel 70/30 | ≈ $15 – 17 / kg | ≈ ₹1,250 – 1,400 / kg |
| Copper Nickel 95/5 | On request | On request |
Prices vary with grade, form, size, quantity, temper and current metal indices. Bulk and repeat orders qualify for preferential rates.
Copper Nickel 90/10 vs 70/30 — Which Grade Do You Need?
|
Criteria |
90/10 CuNi (C70600) |
70/30 CuNi (C71500) |
|---|---|---|
|
Nickel content |
~10% |
~30% |
|
Strength |
Good |
Higher |
|
Seawater velocity tolerance |
Up to ~2.5 – 3.5 m/s |
Up to ~3.5 – 4.5 m/s |
|
Corrosion resistance |
Excellent |
Superior (high-velocity/hot) |
|
Relative cost |
Lower |
Higher |
|
Typical use |
General seawater piping, condensers |
High-velocity, elevated-temp, aggressive service |
Rule of thumb: choose 90/10 for cost-effective general seawater service; step up to 70/30 for higher flow rates, higher temperatures or more aggressive water chemistry.
Where Copper Nickel Products Are Used
Cupronickel is specified wherever saltwater, high humidity or corrosive fluids meet demanding reliability targets:
- Marine & shipbuilding: seawater piping, bilge and ballast systems, sanitary lines, hull fittings.
- Desalination plants: brine handling, multi-stage flash and RO piping.
- Power generation: condenser and feedwater heater tubing.
- Heat transfer: condensers, coolers and high-efficiency heat exchangers.
- Offshore oil & gas: firewater mains, brine, fuel-oil and hydraulic lines on platforms.
- Chemical & process: corrosion-resistant process equipment and valves.
- Safety systems: fire mains, sprinklers and deluge networks.
Quality Assurance & Certifications
Every batch of copper nickel product passes structured quality gates before dispatch:
- Chemical composition verification by optical emission spectroscopy (OES).
- Mechanical testing — tensile, yield, elongation and hardness.
- Non-destructive testing — hydrostatic, eddy current and ultrasonic where applicable.
- Dimensional and visual inspection against drawing tolerances.
- Third-party inspection (TPI) and PMI on request.
Standards & Certifications We Supply Against
- ASTM / ASME: B111/SB111, B122, B171, B366, B466/SB466, B467, F467/F468
- European: EN 12449, DIN 2.0872 / 2.0882, EN 1092 flanges
- Others: BS 2871/2875, JIS, ISO 9001 quality system
- Documentation: EN 10204 3.1 / 3.2 mill test certificates, raw-material traceability
FAQ’s About Copper Nickel Products
What is copper-nickel used for?
Copper-nickel is widely used in marine, offshore, shipbuilding, desalination, power generation, and chemical processing industries. It is commonly manufactured into pipes, tubes, fittings, flanges, heat exchangers, condensers, and seawater piping systems due to its excellent corrosion resistance.
Is copper-nickel magnetic?
No, copper-nickel alloys are generally non-magnetic in the annealed condition. They retain low magnetic permeability, making them suitable for marine, naval, electronic, and instrumentation applications where magnetic interference must be minimized.
What is copper-nickel?
Copper-nickel is a copper-based alloy containing nickel along with small additions of iron and manganese. It offers outstanding resistance to seawater corrosion, biofouling, and erosion, making it ideal for demanding marine and industrial environments.
What are the benefits of using copper-nickel?
Copper-nickel provides excellent resistance to seawater corrosion, biofouling, erosion, and stress corrosion cracking. It also offers high durability, good weldability, low maintenance, and a long service life, making it a cost-effective material for marine and industrial applications.
