ASTM B122 / ASTM B122M UNS C71500 Plates Manufacturer & Supplier in India
Looking for a reliable ASTM B122 UNS C71500 Plate manufacturer in India? We supply premium quality ASTM B122 / ASTM B122M plate solutions manufactured from high-grade UNS C71500, also known as 70-30 Copper-Nickel / 70-30 CuNi. These copper nickel alloy plates are widely used in marine engineering, offshore platforms, shipbuilding, desalination plants, condensers, heat exchangers, chemical processing, and power generation industries where superior seawater corrosion resistance is essential.
As an experienced Cupro-Nickel 70/30 plate exporter and copper nickel alloy manufacturer, we maintain strict quality control throughout manufacturing and inspection to ensure every plate complies with ASTM specifications and international quality standards. Our Copper alloy plate UNS C71500 inventory is available in multiple thicknesses, widths, and lengths with custom cutting options to meet project-specific requirements.
Whether your requirement is for marine structures, offshore piping systems, pressure vessels, or industrial fabrication, our ASTM B122 plate products provide exceptional durability, excellent weldability, and long service life even in aggressive environments.
What is ASTM B122 / ASTM B122M UNS C71500 Plate?
ASTM B122 / ASTM B122M UNS C71500 Plate is a wrought 70-30 Copper-Nickel (70% Copper, 30% Nickel) alloy plate designed for applications exposed to seawater and highly corrosive environments. The alloy offers excellent resistance to biofouling, chloride corrosion, erosion-corrosion, stress corrosion cracking, and marine growth, making it ideal for shipbuilding, offshore platforms, heat exchangers, condensers, desalination plants, and marine piping systems.
ASTM B122 is the standard specification covering wrought copper-nickel alloy plates, sheets, strips, and rolled bars. UNS C71500 is among the most widely used grades within this specification because of its outstanding corrosion resistance in seawater service.
Unlike conventional stainless steels, CuNi 70/30 plate develops a naturally protective oxide layer when exposed to seawater. This protective film significantly reduces corrosion rates and minimizes maintenance costs over decades of service. The alloy also provides excellent fabrication characteristics, making it suitable for welding, machining, bending, and forming without compromising mechanical performance.
Features of 70-30 Copper-Nickel / 70-30 CuNi Plates
Our Copper alloy plate UNS C71500 offers several key advantages that make it the preferred marine copper nickel plate for demanding applications:
- Outstanding seawater corrosion resistance
- Excellent resistance to marine biofouling
- Superior erosion-corrosion resistance
- High mechanical strength
- Excellent weldability
- Good fabrication characteristics
- Long operational life
- Low maintenance requirements
- Excellent thermal conductivity
- Good resistance to stress corrosion cracking
These characteristics make C71500 plate one of the preferred materials for long-term marine and offshore service.
Why Choose ASTM B122 / ASTM B122M Plate Supplier?
Selecting the right supplier is just as important as choosing the right copper alloy plate. As a trusted ASTM B122M plate supplier, we ensure:
- Material sourced from approved mills
- Complete mill test certificates (MTC)
- PMI testing available
- Third-party inspection
- Dimensional accuracy
- Fast delivery schedules
- Export-standard packaging
- Competitive pricing
- Technical assistance before and after purchase
Our objective is to provide copper nickel plate supplier services that deliver materials performing reliably throughout the service life of your project.
Applications of ASTM B122 UNS C71500 Plates
Due to its exceptional corrosion resistance, UNS C71500 plates are widely used across multiple industries.
Marine Industry
Ship hulls, propeller components, seawater piping, marine structural components, and naval vessels rely on marine copper nickel plate for long-term performance in saltwater environments.
Offshore Industry
Offshore platforms, FPSO systems, splash zone structures, firewater systems, and offshore processing equipment all benefit from the superior seawater resistance of offshore copper nickel alloy plate.
Power Plants
Surface condensers, cooling water systems, heat exchangers, and steam generators use heat exchanger copper plate grades for efficient thermal performance and corrosion resistance.
Chemical Processing
Pressure vessels, storage tanks, reactor vessels, and chemical transfer systems require a durable ASTM copper alloy plate that withstands aggressive process media.
Desalination Plants
Evaporators, brine heaters, intake systems, and water distribution equipment are among the most demanding applications for seawater resistant copper alloy materials.
ASTM B122 UNS C71500 Plate Specification
| Specification | Details |
| Standard | ASTM B122 / ASTM B122M |
| Material Grade | UNS C71500 |
| Alloy | 70-30 Copper-Nickel |
| Product Form | Plate, Sheet, Flat Plate |
| Thickness | 3 mm to 100 mm |
| Width | Up to 2500 mm |
| Length | Up to 6000 mm |
| Surface Finish | Hot Rolled, Cold Rolled, Pickled |
| Condition | Annealed, As Rolled |
| Standards | ASTM, ASME, EN |
Mechanical Properties of ASTM B122 C71500 Plate
| Property | Value |
| Tensile Strength | 380 MPa |
| Yield Strength | 125 MPa |
| Elongation | 30% |
| Density | 8.94 g/cm³ |
| Melting Range | 1170–1240°C |
These properties enable the material to withstand both mechanical loading and aggressive operating environments encountered in marine and industrial applications.
Manufacturing Process
| Stage | Description |
| Raw Material Selection | Approved mill sources for UNS C71500 copper-nickel alloy |
| Alloy Melting | Controlled melting to achieve precise chemical composition |
| Hot Rolling | Plate formation to required thickness and dimensions |
| Heat Treatment | Annealing as required to achieve specified mechanical properties |
| Surface Finishing | Pickled, hot rolled, or cold rolled as specified |
| Dimensional Inspection | Verification of thickness, width, length, and flatness |
| Mechanical Testing | Tensile, yield, elongation per ASTM B122 requirements |
| Chemical Analysis | Composition verification per UNS C71500 specification |
| Ultrasonic Testing | Where specified by purchase order |
| Final Packaging | Export-standard packing with full documentation |
Each stage is monitored to maintain compliance with ASTM quality requirements for every copper nickel flat plate we supply.
Heat Treatment Requirement Chart
| Process | Temperature Range (°F) | Duration | Cooling Method |
| Annealing | 1,400 – 1,500 | 1 hour per inch of thickness | Air Cooling |
| Stress Relieving | 1,000 – 1,200 | 1 hour per inch of thickness | Air Cooling |
Chemical Composition of UNS C71500
| Element | Percentage (%) |
| Copper (Cu) | Balance |
| Nickel (Ni) | 29–33% |
| Iron (Fe) | 0.40–1.00% |
| Manganese (Mn) | 1.00% max |
| Zinc (Zn) | 1.00% max |
| Lead (Pb) | 0.05% max |
The nickel addition substantially improves resistance against seawater corrosion for this copper nickel sheet and plate material, while controlled iron content enhances erosion resistance in high-velocity water systems.
Available Sizes
| Product Type | Details |
| Standard Plates | Stock dimensions available for immediate dispatch |
| Custom Cut Plates | Cut to size per engineering drawings |
| Heavy Thickness Plates | Available up to 100 mm thickness |
| Hot Rolled Plates | Standard surface condition for structural applications |
| Cold Rolled Plates | Tighter tolerances and smoother finish |
| Precision Cut Components | Fabrication-ready blanks per project specification |
Why Customers Choose Us
Customers across industrial sectors choose us as their preferred C71500 plate exporter because we focus on supplying certified materials that consistently meet international specifications. Every order is supported with quality documentation, responsive technical assistance, and dependable delivery schedules. Our experience in supplying copper nickel alloy products for demanding applications enables us to recommend suitable material grades based on service conditions, helping customers improve equipment reliability and reduce lifecycle costs.
Request a Quote for ASTM B122 UNS C71500 Plates
Need high-quality ASTM B122 UNS C71500 Plate products from a trusted manufacturer in India for your next project? Our team can help you select the right Copper alloy plate UNS C71500 based on operating temperature, pressure, corrosion environment, fabrication requirements, and applicable standards. Contact us today for competitive pricing, technical assistance, and prompt delivery of ASTM B122 / ASTM B122M plates for domestic and international projects.
Global Reach
ASC LLP boasts a robust global presence, committed to delivering unparalleled service and quality to clients around the world. Our dedication to prompt delivery and exceptional customer care sets us apart in the industry. Major corporations across the USA, Europe, Asia, and other regions place their trust in our high-quality ASTM B122 / ASTM B122M UNS C71500 Copper Alloy Plates. This widespread trust underscores our reputation for reliability and excellence. By consistently meeting and exceeding the expectations of our international clientele, we continue to solidify our position as a leader in the global steel market.
Countries We Export To
UNITED STATES, EUROPE, UK, UAE, SAUDI ARABIA, OMAN, KUWAIT, JORDAN, QATAR, INDONESIA, MALAYSIA, BRAZIL, SPAIN, ITALY, FRANCE, GERMANY, BAHRAIN, SRI LANKA, AZERBAIJAN, AUSTRALIA, AUSTRIA, PHILIPPINES, TURKEY, RUSSIA, IRAN, IRAQ, CANADA, KOREA, JAPAN, YEMEN, FINLAND, ZIMBABWE, HUNGARY, PORTUGAL, VIETNAM, MOROCCO, THAILAND, SOUTH AFRICA, MEXICO, SINGAPORE, GREECE, KUWAIT, POLAND, NEW ZEALAND, SWEDEN, SWITZERLAND, BELGIUM, BHUTAN, BANGLADESH, TAIWAN, ROMANIA, CAMBODIA, KAZAKHSTAN, AFGHANISTAN.
