ASTM B122/B122M C71500 Copper Alloy Plates: A Comprehensive Guide by ASC LLP
At ASC LLP, we pride ourselves on being one of the leading manufacturers, exporters, and suppliers of high-quality Copper Alloy ASTM B122/B122M C71500 Plates. Our plates are renowned for their exceptional durability, corrosion resistance, and superior mechanical properties, making them ideal for a wide range of industrial applications.
What are ASTM B122/B122M C71500 Copper Alloy Plates?
ASTM B122/B122M C71500 Copper Alloy Plates, commonly known as Copper-Nickel 70/30 plates, are specialized metal plates composed primarily of copper (around 70%) and nickel (around 30%), with small additions of iron and manganese to enhance their strength and resistance to corrosion. These plates are standardized under the ASTM B122/B122M specification, which covers the requirements for copper-nickel, copper-silicon, and copper-zinc alloy plate, sheet, strip, and rolled bar.
Copper Alloy C71500 is particularly well-suited for marine applications due to its excellent resistance to seawater corrosion, including both pitting and crevice corrosion. This makes it a preferred material in the shipbuilding industry, as well as in desalination plants and offshore oil and gas platforms.

Properties of ASTM B122/B122M C71500 Copper Alloy Plates
Copper Alloy B122/B122M C71500 Plates are distinguished by their unique combination of properties:
- Corrosion Resistance: One of the most notable properties of C71500 plates is their outstanding resistance to corrosion, particularly in marine environments. The presence of nickel enhances this resistance, making these plates ideal for use in saltwater and other aggressive environments.
- Mechanical Strength: The addition of nickel also contributes to the mechanical strength of C71500 plates, ensuring that they can withstand high pressures and stress, making them suitable for use in demanding applications.
- Thermal Stability: Copper Alloy C71500 maintains its mechanical properties even at elevated temperatures, making it an excellent choice for heat exchangers and other high-temperature applications.
- Weldability and Fabricability: These plates are easy to fabricate and can be welded using most common welding techniques. This makes them versatile and convenient for use in various industrial processes.
- Low Biofouling: C71500 plates exhibit a low tendency for biofouling, which is the accumulation of microorganisms, plants, algae, or small animals on wetted surfaces. This property is especially valuable in marine environments, where biofouling can be a significant issue.
Advantages of Using ASTM B122/B122M C71500 Copper Alloy Plates
- Durability: The combination of copper and nickel in C71500 results in plates that are exceptionally durable, with a long service life even in harsh environments.
- Cost-Effectiveness: Although copper-nickel alloys like C71500 can be more expensive upfront than other materials, their longevity and low maintenance costs make them a cost-effective solution over time.
- Versatility: These plates can be used in a wide range of applications, from marine engineering to chemical processing, due to their excellent mechanical and chemical properties.
- Environmental Resistance: The superior resistance to corrosion and biofouling makes these plates ideal for use in environments that are highly corrosive or subject to biofouling, such as seawater or brackish water.
- High-Temperature Performance: C71500 plates maintain their strength and corrosion resistance even at elevated temperatures, making them suitable for heat exchangers, condensers, and other high-temperature applications.


Schedule and Size Chart
Plate Thickness (mm) | Width (mm) | Length (mm) | Schedule |
3 | 1000 | 2000 | Schedule 1 |
5 | 1000 | 2000 | Schedule 2 |
8 | 1250 | 2500 | Schedule 3 |
10 | 1500 | 3000 | Schedule 4 |
12 | 1500 | 3000 | Schedule 5 |
Mechanical Properties Chart
Property | Value |
Yield Strength | 207 MPa (30 ksi) |
Tensile Strength | 379 MPa (55 ksi) |
Elongation | 40% (min) |
Hardness | 85 HB (Brinell) |
Impact Toughness | 100 J (at -40°C) |
Specifications Chart
Specification | Value |
Standard | ASTM B122/B122M |
Copper Alloy | C71500 |
Type | Copper-Nickel 70/30 |
Form | Plates |
Thickness | 3 mm – 12 mm |
Width | Up to 1500 mm |
Length | Up to 3000 mm |
Tensile Strength Chart
Condition | Tensile Strength (MPa) |
Annealed | 379 |
Cold Worked | 482 |
Heat Treated | 413 |
Heat Treatment Requirement Chart
Heat Treatment | Temperature | Duration | Cooling |
Annealing | 815 – 870°C | 1 – 2 hours | Air or Water |
Solution Treatment | 1020 – 1050°C | 30 minutes | Rapid Cooling |
Aging | 550 – 650°C | 1 – 2 hours | Air Cooling |
Chemical Composition Chart
Element | Composition (%) |
Copper | 70.0 – 72.0 |
Nickel | 28.0 – 30.0 |
Iron | 0.5 – 1.0 |
Manganese | 0.5 – 1.0 |
Other | Balance |
Physical Properties Chart
Property | Value |
Density | 8.9 g/cm³ |
Melting Point | 1150 – 1250°C |
Thermal Conductivity | 30.5 W/mK |
Electrical Conductivity | 15% IACS |
Modulus of Elasticity | 110 GPa |
Application Chart
Industry | Applications |
Marine Engineering | Ship hulls, seawater piping systems, heat exchangers |
Desalination Plants | Evaporator tubes, seawater cooling systems |
Offshore Oil & Gas | Risers, platform structures, processing equipment |
Power Generation | Heat exchangers, condensers |
Chemical Processing | Tanks, reactors, piping systems |
ASTM B122/B122M C71500 Copper Alloy Plates Manufacturers, Exporters, and Suppliers
As a leading manufacturer, exporter, and supplier of ASTM B122/B122M C71500 Copper Alloy Plates, ASC LLP offers a comprehensive range of plates in various sizes, thicknesses, and specifications to meet the diverse needs of our clients. Our plates are manufactured using the highest quality raw materials and state-of-the-art technology, ensuring that they meet or exceed industry standards.
Plates Copper Alloy ASTM B122/B122M C71500 Traders and Stockists
In addition to manufacturing and supplying, ASC LLP is also a trusted trader and stockist of ASTM B122/B122M C71500 Copper Alloy Plates. We maintain a large inventory of plates in various specifications, ready for immediate dispatch to meet urgent requirements.
ASTM B122/B122M C71500 Copper Alloy Plates are a versatile and durable solution for a wide range of industrial applications. Their unique combination of corrosion resistance, mechanical strength, and thermal stability makes them an ideal choice for use in demanding environments, particularly in the marine and chemical industries.
Global Reach
Amardeep Steel Centre 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/B122M C71500 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.