Copper Nickel Round Bars are very popular in marine, offshore and heat transfer systems as they have great resistance to corrosion and can be used in seawater environments. Jade Alloys is a trustworthy vendor and exporter of copper nickel round bar products that produces copper nickel bars and rounds in varying sizes, shapes, and surface finishes to fit the international quality standards and project requirements.

Our copper nickel bars are of high quality, and come in various shapes round, square, hexagonal and flat; they are used in the demanding industrial and engineering use where strength, reliability and long life of service is critical. All copper nickel rods, which we manufacture, are made to resist biofouling and stress corrosion cracks in the most vicious aquatic environments.
Looking to buy Nickel Alloy Round Bars?
Check Nickel 201 Round Bar & Nickel 200 Round Bar Price List in India
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Copper Nickel Round Bar Grades
Copper Nickel Round Bar Specifications
| Feature | Details |
|---|---|
| Sizes (By Shape) | Round: 3mm – 800mm | Flat: 2mm – 100mm | Hex: 4mm – 1016mm | Square: 4x4mm – 100x100mm |
| Length & Thickness | Length: 100mm to 3000mm | Thickness: 3mm to 25mm |
| Tolerances | H8, H9, H10, H11, H12, H13 & K9, K10, K11, K12 |
| Manufacturing Techniques | Forged, Peeled, Cold Drawn, Hot Rolled |
| Surface Finish | Bright, Polish, Brush, Mill, Turn Smooth (Peeled), Pickled, Hairline |
| Material Condition | Polished, Finished, Hot-Rolled Pickled, Hairline, Cold Drawn, Sand Blasting |
| Standard Applications | Evaporator Tubes, Heat Exchangers, Hot Water Tanks, Valve Trims, Pump Components |
| Cutting Methods | Saw Cutting, Shear Cutting, Plasma Cutting |
| Testing Methods | Hardness Test, Mechanical Testing, Pitting Resistance Test, IGC Test |
| Value Added Services | Machining, Forging, Heat Treating, Polishing, Rolling |
| Test Certificates | 100% Radiography Report, Raw Materials Certificate, Third-Party Inspection (TPI) |
Equivalent Grades of Cu Ni Alloy Round Bars
| STANDARD | WERKSTOFF NR. | UNS |
|---|---|---|
| Cupro Nickel 70/30 | 2.0882 | C71500 |
| Cupro Nickel 90/10 | 2.0872 | C70600 |
Cupro Nickel Round Bars Mechanical Properties
| Grade | Melting Point | Density | Elongation | Yield Strength | Tensile Strength |
|---|---|---|---|---|---|
| 90/10 | 2260°F | 8.8 g/cm³ | 30% | 20,000 PSI | 50,000 PSI |
| 70/30 | 2260°F | 0.323 lb/in³ at 68°F | 30% | 20,000 PSI | 50,000 PSI |
Copper Nickel Rod Chemical Composition
| Grade | Cu | Mn | Ni | Fe | Zn | Pb |
|---|---|---|---|---|---|---|
| Cu-Ni 90-10 | 88.6 min | 1.0 max | 9–11 | 1.8 max | 1.0 max | 0.05 max |
| Cu-Ni 70-30 | 65.0 min | 1.0 max | 29–33 | 0.4–1.0 | 1.0 max | 0.05 max |
Types Of Copper Nickel Bars
Copper Nickel Round Bars Size Chart
| Cupro Nickel Square Bar | |
|---|---|
| Imperial Size | 0.75 to 17.7165 in |
| Metric Size | 20 to 450 mm |
| Copper Nickel Round Bar | |
| Imperial Size | 0.75 to 17.7165 in |
| Metric Size | 20 to 450 mm |
| Cunifer Flat Bar | |
| Imperial Size | 0.1574 to 0.5 in |
| Metric Size | 0.5905 to 1.3779 in |
Copper Nickel Cold Drawn Bar
| Cunifer Flat Bar | |
|---|---|
| Imperial Size | 4 to 12.7 mm |
| Metric Size | 15 to 35 mm |
| Cupro Nickel Square Bar | |
| Imperial Size | 0.25 to 1.25 in |
| Metric Size | 6.35 to 35 mm |
| Copper Nickel Round Bar | |
| Imperial Size | 0.25 to 3.5 in |
| Metric Size | 6.35 to 88.9 mm |
| Cuni Hex Bar | |
| Imperial Size | 0.25 to 2.75 in |
| Metric Size | 6.35 to 69.85 mm A/F |
Tolerance Chart of Copper Nickel Round Bar
| Section / Shape | Round | Square and Hexagon | Flat (Width) | Flat (Thickness) | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diameter, Size or Width Across Flats (mm) | ≥ 6 ≤ 18 | > 18 ≤ 30 | > 50 ≤ 80 | > 30 ≤ 50 | > 80 ≤ 100 | ≥ 6 ≤ 18 | > 18 ≤ 30 | > 80 ≤ 105 | > 50 ≤ 80 | > 30 ≤ 50 | > 30 ≤ 50 | < 18 | > 130 ≤ 160 | > 80 ≤ 100 | > 100 ≤ 130 | > 50 ≤ 80 | > 18 ≤ 30 | > 160 ≤ 320 | < 18 | > 30 ≤ 50 | > 18 ≤ 30 | > 50 ≤ 80 |
| Variation Permitted (mm) | +0 to −0.070 | +0 to −0.085 | +0 to −0.120 | +0 to −0.100 | +0 to −0.140 | +0 to −0.090 | +0 to −0.110 | +0 to −0.250 | +0 to −0.160 | +0 to −0.130 | +0 to −0.160 | +0 to −0.110 | +0 to −1.00 | +0 to −0.220 | +0 to −0.350 | +0 to −0.190 | +0 to −0.130 | +1.00 to −1.00 | +0 to −0.110 | +0 to −0.250 | +0 to −0.130 | +0 to −0.350 |
Copper Nickel Round Bar HSN Code
| STANDARDS | HSN CODE |
|---|---|
| Copper Nickel Round Bar | 740722 |
Application Of Copper Nickel Round Bars
Copper Nickel Round Bars are commonly used in:
- Heat exchangers & condensers
- Evaporator tubes
- Marine & offshore systems
- Hot water tanks
- Valve trims & pump components
ASTM B151 Copper Nickel Square Bar Testing
To ensure the highest structural integrity and performance in marine environments, every copper nickel square bar and copper nickel rod at Jade Alloys undergoes a rigorous quality assurance process. We adhere to ASTM B151 standards to guarantee that our materials can withstand high-pressure and corrosive conditions.
- Pitting Corrosion Test
- PMI (Positive Material Identification) Test
- Radiographic & Eddy Current Testing
- Buckling and Crushing Test
- Flattening and Flaring Tests
- Mechanical & Hardness Testing





