Copper Nickel Products Supplier in India

Lakshya Steel supplies copper nickel products in Cu-Ni 90/10 (UNS C70600) and Cu-Ni 70/30 (UNS C71500) for seawater piping, heat exchangers, condensers, offshore systems and other corrosive-service applications. The range includes pipes, tubes, sheets, plates, flanges, fittings, rods and bars produced to the applicable ASTM, ASME, EN, DIN or project specification for each product form. Buyers can review the Copper Nickel 90/10 Products and Copper Nickel 70/30 Products pages to compare grade-specific options, then share the required form, size, standard, quantity and testing requirements through the request-a-quote form for a project-specific offer.

Copper Nickel Products 

Choose the alloy first, then select the product form. The grade hub pages contain the detailed sizes, standards and ordering information for each range.

What Are Copper Nickel Alloys?

Copper nickel, also written as Cu-Ni or cupronickel, is a family of copper-based alloys in which nickel is the main alloying element. The principal marine grades also contain controlled iron and manganese additions. These additions are important because the final corrosion and erosion behaviour depends on the complete standard chemistry, not only on the nominal copper-to-nickel ratio.

The two main product families on this page are 90/10 and 70/30. C70600 is the more widely used and more economical marine grade. C71500 contains more nickel and is generally stronger, so it may be specified for more demanding flow, pressure or naval service. The project engineer should confirm grade selection against water chemistry, velocity, temperature, fabrication method and the governing design code.

Copper Nickel Grade and Designation Guide

Designation note: equivalent names help identify a grade, but they do not replace the purchase standard. The order should still state the product form and the governing ASTM, ASME, EN, DIN, EEMUA or project specification.

Copper Nickel Standards by Product Form

Copper Nickel Chemical Composition

The values below are UNS reference ranges for C70600 and C71500. Final acceptance must follow the product standard and the heat-specific Mill Test Certificate. Some welding applications use C70620 or C71520 with tighter impurity controls.

Copper Nickel Property and Fabrication Summary

Copper Nickel 90/10 vs 70/30

Need grade-specific details? Review theC70600 Copper Nickel 90/10 range or theC71500 Copper Nickel 70/30 range before preparing the RFQ.

Industries We Serve

• Shipbuilding and marine systems: Used for seawater piping, cooling lines, deck systems, valves, flanges and related components where the specified Cu-Ni grade meets the required velocity and corrosion conditions.
• Heat exchangers and condensers: Selected for condenser and heat-exchanger tubes that transfer heat while operating with seawater or brackish cooling water.
• Offshore oil and gas: Applied in platform seawater systems, firewater lines, utility piping and splash-zone components after project-specific corrosion review.
• Power generation: Used in condensers, cooling-water circuits and auxiliary systems where water chemistry and flow conditions support copper-nickel service.
• Desalination and water treatment: Considered for seawater intake, transfer and heat-recovery equipment where chloride exposure is continuous.
• Chemical and process plants: Used for selected heat-transfer and piping duties after compatibility is checked against the exact chemical composition, temperature and concentration.

Testing and Documentation

The required documentation should be stated with the enquiry. Depending on the product form and project, the purchase order may call for a Mill Test Certificate, heat-number traceability, chemical analysis, mechanical testing, dimensional inspection, hydrostatic or pneumatic testing for tubular products, non-destructive testing, PMI, or third-party inspection. Lakshya Steel should confirm the available test and certificate package before the order is finalised.

Request a Copper Nickel Products Quote

Share the alloy grade, product form, standard, size, wall thickness or plate thickness, length, quantity, temper, testing requirement, certification and delivery location. For piping items, also include the schedule, pressure class, end type and drawing when applicable.

Frequently Asked Questions About Copper Nickel Products