copper-nickel 70/30 Products
Copper Nickel 70/30 Round Bar & Rods Exporter / ASTM B151 Copper Nickel 70/30 Round Bars
Information
Trusted Copper Nickel 70/30 Round Bar Manufacturer, Supplier & Exporter — delivering Cupro Nickel 70/30 Round Bars, Cu-Ni Alloy 70/30 Rods in bright, polished, hot rolled, cold drawn forms conforming to ASTM B111, ASME SB111, EN, DIN, JIS, and BS standards worldwide.
Round Bar | Square Bar | Hex Bar | Flat Bar | Bright Bar | Polished Bar | Hot Rolled | Cold Drawn | ASTM B111 | ASME SB111
Certified Standards
About Our Copper Nickel 70/30 Round Bars & Rods
Lakshya Steel is a leading Copper Nickel 70/30 Round Bar Manufacturer, Supplier, and Exporter serving clients across the globe. We specialize in Cupro Nickel 70/30 Round Bars, Copper Nickel Alloy 70/30 Round Bars, Cu-Ni Alloy 70/30 Round Bars, and Cupro Nickel 70/30 Rods in all standard and custom shapes, sizes, and surface finishes.
Our Copper Nickel 70/30 Round Bars/Rods are manufactured from premium UNS C71500 (DIN 2.0882 / WNR 2.0882 / AFNOR Z2NCUD31-20AZ) alloy containing 70% copper and 30% nickel with controlled additions of iron and manganese. This composition delivers exceptional corrosion resistance in seawater and marine environments, superior strength compared to 90/10 grades, excellent resistance to stress corrosion cracking, biofouling resistance, and high thermal conductivity.
As a trusted Cu-Ni Alloy 70/30 Round Bar Supplier and Exporter, we manufacture Copper Nickel products of standards ASTM B111, ASME SB111, ASTM A479, EN 12163, DIN 17660, JIS H3300, and BS 2874 specifications. We supply bars in bright bar, polished bar, black bar, hot rolled, cold rolled, and cold drawn conditions with full third-party inspection, mill test certificates, PMI reports, and NABL-approved lab documentation.
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70 / 30 Cu / Ni Ratio |
6–500 mm Diameter Range |
|
1–6 Meters Standard Lengths |
8.94 g/cm³ Density |
Available Shapes & Forms
We manufacture and supply a complete range of Copper Nickel 70/30 Bars and Rods in all standard shapes and configurations. Each product is precision-machined or drawn to meet dimensional tolerances and surface finish requirements per international standards.
Round Bar / Round Rod
Cupro Nickel 70/30 Round Bars and Copper Nickel 70/30 Round Rods available in 6mm to 500mm diameters. Supplied in bright, polished, black, hot rolled, cold rolled, and cold drawn finishes per ASTM B111 and ASME SB111 standards.
Square Bar
Cupro Nickel 70/30 Square Bars available in 10mm to 200mm sizes. Ideal for machining applications, structural components, and forging stock. Supplied with dimensional inspection certificates and material traceability.
Hex Bar / Hex Rod
Copper Nickel 70/30 Hex Bars and Cu-Ni 70/30 Hex Rods manufactured to A/F (across flats) dimensions. Excellent for high-precision machining, fastener production, and valve components in marine applications.
Rectangular Bar / Rectangle Rod
Cupro Nickel 70/30 Rectangular Bars available in custom cross-sections. Used for specialized fabrication, structural applications, and custom machining projects in marine and offshore industries.
Cupro Nickel 70/30 Flat Bars and Copper Nickel 70/30 Flat Rods supplied in various widths and thicknesses. Perfect for fabrication, frame construction, and structural components requiring high corrosion resistance.
Cupro Nickel 70/30 Forged Bars and Copper Nickel 70/30 Forged Rods manufactured through hot forging processes. Available in round, square, hex, and custom shapes. Also supplied as billets and ingots for further processing.
Available Surface Finishes & Conditions
Our Copper Nickel 70/30 Round Bars and Cu-Ni Alloy 70/30 Rods are available in multiple surface finishes and manufacturing conditions to meet specific application requirements:
Polished Round Bar
ASTM B111 / ASME SB111 Round Bar Specifications
The following table outlines the complete specifications for our Copper Nickel 70/30 Round Bars, Cupro Nickel 70/30 Rods, and Cu-Ni Alloy 70/30 Round Bars manufactured to ASTM B111, ASME SB111, and international standards:
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Specifications |
: |
ASTM B151, ASME SB151 |
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Dimensions |
: |
EN, DIN, JIS, ASTM, BS, ASME, AISI |
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Range |
: |
5 mm To 500 mm thick in 100 mm TO 6000 mm |
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Cu-Ni 70/30 Round Bars |
: |
6 mm to 120 mm. |
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Cu-Ni 70/30 Square Bars |
: |
10 mm to 200 mm. |
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Finish |
: |
Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish |
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Length |
: |
100 mm to 3660 mm Long |
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Form |
: |
Round, Square, Hex (A/F), Rectangle, Billet, Ingot, Forging Etc. |
Equivalent Grades — Copper Nickel 70/30 Round Bar
International Equivalent Grades for UNS C71500 / Cu-Ni 70/30
|
Standard |
Grade Designation |
|
UNS (USA) |
C71500 |
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DIN / WNR (Germany) |
2.0882 / CuNi30Mn1Fe |
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EN (Europe) |
CW352H |
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AFNOR (France) |
Z2NCUD31-20AZ |
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BS (UK) |
CN102 / CW352H |
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JIS (Japan) |
C7150 / C7164 |
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ASTM |
B111 (C71500) |
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ASME |
SB111 (C71500) |
Chemical Composition & Mechanical Properties
Chemical Composition — Cu-Ni 70/30 (UNS C71500)
Chemical Composition (% by Weight) — ASTM B111 / DIN 2.0882
| Grade | Cu | Ni | Fe | Mn | Pb | Zn | C |
| Cu-Ni 70/30 (C71500) | 65.0 min | 29–33 | 0.4–1.0 | 1 max | 0.05 max | 1 max | 0.05 max |
Note: For welding applications, maximum levels are: Zinc 0.50%, Lead 0.02%, Phosphorus 0.02%, Sulfur 0.02%, Carbon 0.05%
Mechanical Properties
Mechanical Properties — Copper Nickel 70/30 Round Bar (UNS C71500)
|
Property |
Metric |
Imperial |
|---|---|---|
|
Tensile Strength (Ultimate) |
372–517 MPa |
54,000–75,000 psi |
|
Tensile Strength (Yield) |
88–483 MPa |
12,800–70,100 psi |
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Elongation at Break |
45% |
45% in 381 mm |
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Hardness (Rockwell B) |
50–80 HRB |
50–80 HRB |
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Charpy Impact |
107 J |
78.9 ft-lb |
|
Elastic Modulus |
150 GPa |
21,800 ksi |
|
Shear Modulus |
57.0 GPa |
8,270 ksi |
|
Machinability |
20% |
Relative to C36000 (100%) |
Physical Properties
Physical Properties — Cupro Nickel 70/30 Round Bars (UNS C71500 / DIN 2.0882)
|
Property |
Metric |
Imperial |
|
Density |
8.94 g/cm³ |
0.323 lb/in³ |
|
Melting Point |
1171 °C |
2140 °F |
|
Thermal Conductivity |
29 W/m·K @ 20°C |
16.8 BTU·in/hr·ft²·°F |
|
Electrical Resistivity |
34 µΩ·cm @ 20°C |
34 µΩ·cm @ 68°F |
|
Coefficient of Thermal Expansion |
16.2 µm/m·°C (20–300°C) |
9.0 µin/in·°F (68–572°F) |
|
Poisson’s Ratio |
0.34 |
0.34 |
|
Annealing Temperature |
649–816 °C |
1200–1500 °F |
Industries Using Copper Nickel 70/30 Round Bars & Rods
Our Copper Nickel 70/30 Round Bars, Cupro Nickel 70/30 Rods, Cu-Ni Alloy 70/30 Round Bars, and Copper Nickel Alloy 70/30 Round Bars are widely used across demanding industrial environments:
- Marine & Offshore
- Shipbuilding Industry
- Desalination Plants
- Oil & Gas Industry
- Chemical Processing
- Petrochemical Industry
- Power Generation
- Refining Industry
- Heat Exchangers
- Valve Manufacturing
Get the Best Price for your Grade
|
Grade |
Product Type |
Price |
|
CN 90/10 |
Welded Pipes |
On Request / MT |
|
CN 90/10 |
Plates / Sheets |
On Request / MT |
|
CN 70/30 |
Pipes |
On Request / MT |
|
CN 70/30 |
Plates & Sheets |
On Request / MT |
|
CN 70/30 |
Flanges |
On Request / MT |
|
CN 70/30 |
Rods & Bars |
On Request / MT |
|
CN 70/30 |
Tubes |
On Request / MT |
* Prices vary by quantity, specification & delivery terms. Contact us for bulk pricing.
Frequently Asked Questions
What are Copper Nickel 70/30 Round Bars?
Copper Nickel 70/30 Round Bars (UNS C71500) are cylindrical bars made from copper-nickel alloy with 70% copper and 30% nickel plus iron and manganese, offering exceptional seawater corrosion resistance and high strength for marine applications.
What is the difference between bright bar, polished bar, and black bar?
Cupro Nickel 70/30 Bright Bars are cold drawn with tight tolerances and smooth finish. Polished Round Bars have mirror-like surfaces. Black Bars are hot rolled with oxide scale—cost-effective for forging and welding applications.
What shapes are available in Copper Nickel 70/30 Bars?
We supply Cupro Nickel 70/30 Round Bars, Square Bars (10-200mm), Hex Bars/Rods (A/F), Rectangular Bars, Flat Bars/Rods, Forged Bars, Billets, and Ingots in ASTM B111 and ASME SB111 grades per customer specifications.
What standards do your Copper Nickel 70/30 Round Bars conform to?
Our Cu-Ni 70/30 Round Bars meet ASTM B111, ASME SB111, ASTM A479, EN 12163, DIN 17660, JIS H3300, and BS 2874. We provide mill test certificates (EN 10204 3.1/3.2), PMI reports, chemical analysis, and NABL certifications.
What is the size range for Copper Nickel 70/30 Round Bars?
Copper Nickel 70/30 Round Bars/Rods range from 6mm to 500mm diameter. Common sizes: 14mm-300mm. Standard lengths: 1-6 meters (2000mm, 3000mm, 6000mm). Custom cut lengths available on request with dimensional inspection.
Do you supply hot rolled and cold drawn Copper Nickel 70/30 Round Bars?
Yes. We supply Copper Nickel 70/30 Hot Rolled Bars, Cold Rolled Round Bars, and Cold Drawn Round Bars. Cold drawn offers superior surface finish and tight tolerances (H9/H10). Hot rolled is economical for structural applications.
What are the equivalent grades to UNS C71500?
UNS C71500 equivalents: DIN 2.0882 (WNR 2.0882), EN CW352H, AFNOR Z2NCUD31-20AZ, BS CN102, JIS C7150. All Copper Nickel Alloy 70/30 Round Bars come with material traceability and equivalent grade certifications.
How can I get the Copper Nickel 70/30 Round Bar Price List?
Contact us for the latest Cupro Nickel 70/30 Round Bar Price List. Pricing varies by size, finish (bright/polished/black), quantity, and length. We offer competitive rates for ASTM B111 Cu-Ni Alloy 70/30 Round Bars with global delivery.
Do you export UNS C71500 Round Bars and DIN 2.0882 Rods internationally?
Yes. As a leading CuNi 70/30 Round Bar Manufacturer, Supplier and Exporter, we ship UNS C71500, DIN 2.0882 Round Bars globally with full test certificates, export documentation, and custom packaging for safe international delivery.
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Request a Quote For
Cu-Ni 70/30 Round Bars
As a trusted Copper Nickel 70/30 Round Bar Manufacturer, Supplier & Exporter, we offer competitive pricing, full certifications, and global delivery for all shapes, sizes, and finishes — including ASTM B111, ASME SB111, EN, DIN, JIS, and BS standards.
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CuNi 70/30 Tubes
As a trusted Copper Nickel 70/30 Tube Manufacturer, Supplier & Exporter, we offer
competitive pricing, ready stock, full EN 10204 3.1 / 3.2 certification, 100% ECT & hydrostatic
testing, and global delivery for all ASTM B111, ASTM B466, ASTM B543, ASME SB111 Copper Nickel
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