High Quality Copper Nickel 70/30 & 90/10 Round Bars & Rods

Mechanical Strength • Accuracy & Straightness • Quality & Finish

Copper Nickel 70/30 & 90/10 Round Bars Manufacturer & Exporter

Ratnadeep Steel & Engg. Co. is a trusted manufacturer, exporter, and supplier of Copper Nickel 70/30 and Copper Nickel 90/10 Round Bars known for their excellent resistance to seawater corrosion, biofouling, and erosion. Copper-nickel alloys offer superior durability, thermal conductivity, and long service life in harsh marine and industrial environments.

Copper Nickel 70/30 Round Bars contain approximately 70% copper and 30% nickel, providing outstanding resistance to seawater, high-velocity flow conditions, and stress corrosion cracking. These round bars are widely used in marine engineering, offshore platforms, heat exchangers, condensers, desalination plants, and shipbuilding applications.

Copper Nickel 90/10 Round Bars consist of about 90% copper and 10% nickel and offer excellent corrosion resistance combined with good strength and formability. These round bars are commonly used in seawater piping systems, heat exchangers, hydraulic lines, marine hardware, and coastal industrial applications.

Copper Nickel 70/30 Round Bars
Copper Nickel 90/10 Round Bars

All our copper nickel round bars are manufactured and supplied in accordance with ASTM, ASME, EN, DIN, and ISO standards. We offer a wide range of diameters, lengths, surface finishes, and precision-cut sizes with full mill test certification (MTC), ensuring consistent quality and reliable performance for marine and industrial applications.

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Our Range of Copper Nickel Round Bars

Explore Copper Nickel 70/30 Round Bars

Copper Nickel 70/30
Round Bars

Explore Copper Nickel 90/10 Round Bars

Copper Nickel 90/10
Round Bars

Copper Nickel 70/30 Round Bar

70% copper and 30% nickel alloy with small additions of iron and manganese
Exceptional resistance to seawater corrosion and biofouling
Higher strength and durability than Cu-Ni 90/10
Excellent resistance to erosion and cavitation
Good thermal conductivity and weldability
Min tensile strength: ~400–550 MPa
Stable performance in high-velocity marine environments
Used in shipbuilding, offshore platforms, condensers, heat exchangers
Ideal for heavy-duty marine and saltwater applications

Copper Nickel 90/10 Round Bar

90% copper and 10% nickel alloy with iron additions
Excellent corrosion resistance in seawater and brackish water
Good resistance to biofouling and scaling
Excellent formability and machinability
Good thermal and electrical conductivity
Min tensile strength: ~300–450 MPa
Lower cost and easier fabrication than 70/30 grade
Used in seawater piping, desalination plants, condensers, heat exchangers
Ideal for moderate marine and coastal environments

The stainless steel round bars we supply undergo a comprehensive quality assurance process, including ultrasonic testing (UT), eddy current testing (ECT), and other essential non-destructive testing (NDT) methods, along with detailed chemical composition analysis and mechanical property evaluation. Each round bar is inspected at multiple stages of production to ensure freedom from surface and internal defects, dimensional accuracy, and consistent metallurgical quality. All materials are manufactured and tested in accordance with applicable ASTM, ASME, EN, DIN, and ISO standards, ensuring reliable performance and full acceptance in demanding industrial applications across domestic and international markets.

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Looking for high-quality Copper Nickel 70/30 & 90/10 round bars & rods? Get in touch with us today.