UNS C71520 combines an alloy of 70.00% copper and 30.00% nickel, in addition to minute amounts of iron and manganese, makes a copper alternative. This alloy demonstrates exceptional ability to marine corrosion safety enabling its application to shielding of multipurpose shipbuilding, deep-sea oil mining and seawater piping safety systems. In high performance also vapor compression, it is important to mention that it does not have a corrosion reaction and has a thermal stability; and therefore is preferable for heat exchangers and condensers. Along with it, they both are of the same grade B466 and B111 as well. The alloy is chemical composition which includes copper, nickel, iron, and manganese, as well as other elements in trace amounts. This alloy has as a key advantage such properties as high ductility, high resistance to corrosion and biofouling, while also being a perfect match for heat transfer. Relevant table, chart and documents for this piece equipment include a material test report, and a certificate indicating that this piece of equipment is meeting industry standards.
UNS C71520 is usually identified as 70/30, which refers to the composition of copper and nickel that are used to produce an alloy with the ability to resist corrosion significantly in water solutions with added salt. The chemical composition of it is typically Copper 70%, nickel 30%, and the member of other metal elements, such as iron and manganese, is also included. These materials provide excellent mechanical properties trade and are also used in the marine operations such as shipbuilding, offshore projects designing and desalination. The corrosion resistance and ownability of biofouling are another advantage that increase his confidence to use it under water as components. C71520 earned the reputation for ruggedness, which is the reason that the strength is so important to several industries.
Elements | Cu | Ni | Mn | Zn | Fe | C | Pb | P | S |
---|---|---|---|---|---|---|---|---|---|
Min (%) | - | 29 | - | - | 0.40 | - | - | - | - |
Max (%) | 65 | 33 | 1 | 0.5 | 1 | 0.05 | 0.02 | 0.02 | 0.02 |
Advantages:
Excellent Corrosion Resistance: ASTM B122 C71520 copper is one of the top copper types, which is noted for its outstanding corrosion resistant capabilities under many conditions such as seawater and acidic environments.
High Thermal Conductivity: This copper alloy has a high thermal conductivity value, which allows it to be used in heat exchangers, thermal management equipment, and other applications where efficient heat transfer is required.
Good Strength and Ductility: C71520 enjoys a good mechanical strength among which strength and ductility combine, enabling the material to remain stable against mechanical forces without brittle fracture.
Biostatic Properties: Copper materials like C71520 due to their biostatic properties have good applicability in sectors like health care.
Ease of Fabrication: C71520 copper is fairly easy to fabricate through common techniques such as welding, soldering, and brazing helping fabrication processes.
Disadvantages:
Cost: Copper alloys such as C71520 are higher priced than other materials which can affect the total project or product cost.
Susceptibility to Dezincification: In some cases, copper might be affected by the process of dezincification that is a kind of corrosion that can compromise the material durability.
Limited Strength at High Temperatures: Meanwhile, C71520 alloy possesses good strength, but its strength at elevated temperatures tends to decline, restricting its application in high-temperature fields.
Risk of Contamination: Copper alloys can be prone to impurities caused by other metals or substances. They may demand more care in handling and storage to maintain their formulation.
Environmental Considerations: Copper mining and production sometimes leads to environmental problems, and the copper waste has to be recycled or disposed of properly to avoid environmental issues.
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It normally has around 30% nickel, 1% iron, while the rest is copper, with traces of other elements
It offers anti-corrosion effect, heat conducting property and excellent ductility.
Related grades are ASTM B122 and DIN 2. 0872.
Its application in marine engineering, offshore structures, and seawater desalination plants is ascribed to the fact that it is corrosion resistant in seawater.