Cupro Nickel 70/30 Round Bars & Rods
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Get a QuoteCupro Nickel 70/30 (UNS C71500) Explained
Cupro Nickel 70/30 (UNS C71500) is a high-performance copper–nickel alloy containing approximately 70% copper and 30% nickel, with controlled additions of iron and manganese. To begin with, this alloy offers excellent resistance to seawater corrosion, erosion, and biofouling — making it especially suitable for the harshest marine and offshore environments. Furthermore, it maintains good mechanical strength at elevated temperatures and demonstrates outstanding resistance to stress corrosion cracking.
Why do marine engineers and offshore project managers choose Cupro Nickel 70/30 for critical seawater systems? First and foremost, its higher nickel content delivers superior resistance to erosion and corrosion in high-velocity seawater applications, outperforming many other copper-based alloys. In addition, it provides excellent fabricability and weldability, allowing ease of manufacturing and installation — reducing project timelines and costs. Moreover, its exceptional resistance to stress corrosion cracking ensures long-term structural integrity in demanding offshore environments.
Consequently, Cupro Nickel 70/30 is widely used in seawater piping systems, heat exchangers, and condensers. Furthermore, it is also trusted in offshore platforms, shipbuilding components, desalination plants, and power generation systems. Equally important, its combination of superior corrosion resistance, mechanical strength, and long-term reliability makes it the preferred choice for applications where long service life and resistance to aggressive saline conditions are essential.
Need premium Cupro Nickel 70/30 round bars for your demanding marine or offshore application? Contact our technical team today — we’ll help you select the right size and specifications for your requirements, and provide a competitive quote tailored to your needs.
Other Types of Cupro Nickel 70/30 Bars
- Square bars made from high-performance Cu-Ni 70/30 alloy
- Excellent resistance to seawater corrosion and biofouling
- Produced as per ASTM B111 / ASME SB111 standards
- Commonly used in marine and offshore components
- Hexagonal bars suitable for fasteners and marine fittings
- Uniform geometry for accurate machining and threading
- High strength combined with excellent corrosion resistance
- Widely used in shipbuilding and desalination systems
- Rectangular Cu-Ni 70/30 bars for structural applications
- Excellent resistance to erosion and corrosion in seawater
- Available in standard and custom dimensions
- Used in heat exchangers and marine fabrications
- Flat bars with consistent thickness and smooth surface
- Manufactured to DIN 2.0882 and ASTM B111 specifications
- Ideal for brackets, supports, and marine structures
- Supplied in cut lengths as per project requirement
- Bright drawn bars with close dimensional tolerances
- Superior surface finish for precision machining
- Excellent mechanical stability and corrosion resistance
- Used in shafts, fasteners, and precision marine parts
- Forged Cu-Ni 70/30 bars with enhanced grain structure
- High resistance to stress corrosion and seawater erosion
- Suitable for heavy-duty marine and offshore use
- Applied in forged fittings and critical ship components
CUPRO NICKEL 70/30 ROUND BAR EQUIVALENT GRADES
| STANDARD | UNS | WNR. | EN | AFNOR |
|---|---|---|---|---|
| Cupro Nickel 70/30 | C71500 | 2.0882 | CuNi30Mn1Fe | Z2CND18-12 |
SPECIFICATION OF CUPRO NICKEL 70/30 ROUND BAR
| Product Standard | ASTM B111 / ASTM B151 / ASME SB111 |
|---|---|
| Dimension Standard | EN, DIN, JIS, ASTM, BS, ASME, AISI |
| Size | 14 mm – 300 mm |
| Length | 1 to 6 meters, Custom Cut Length |
| Form | Round, Square, Hex (AF), Rectangle, Billet, Ingot, Forging |
CHEMICAL COMPOSITION OF CUPRO NICKEL 70/30 ROUND BAR
| Grade | Cu | Ni | Fe | Mn | Pb | Zn |
|---|---|---|---|---|---|---|
| Cupro Nickel 70/30 | 65.0 min | 29.0 – 33.0 | 0.40 – 1.00 | 1.00 max | 0.05 max | 1.00 max |
MECHANICAL & PHYSICAL PROPERTIES OF CUPRO NICKEL 70/30 ROUND BAR
| Density | Melting Point | Tensile Strength | Yield Strength (0.2% Offset) | Elongation |
|---|---|---|---|---|
| 0.323 lb/in³ (at 68°F) | 2260 °F (1240 °C) | 50,000 psi (345 MPa) | 20,000 psi (138 MPa) | 30% |
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Looking for high-quality Cupro Nickel 70/30 Round Bars & Rods? Our products are manufactured in compliance with ASTM B151 and ASME SB151 standards. Get in touch with us today.
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