igh-Pure Ni200 / Ni201 (99.998% / 99.996% Pure Nickel Plate N4 N6) is a specialized form of pure nickel used in various industries requiring high-performance materials that offer excellent resistance to corrosion, high strength, and durability in extreme environments. Below is a detailed overview of the Ni200 / Ni201 plates, their applications, and properties.
1. Material Overview:
Ni200 / Ni201 is high-purity nickel, with 99.998% (Ni200) or 99.996% (Ni201) pure nickel content. These high-purity grades are often used in applications that require low levels of impurities.
Ni200 and Ni201 are chemically very similar, with Ni201 being slightly lower in carbon content, making it suitable for certain applications where high-temperature strength and resistance to embrittlement are critical.
2. Key Properties of High-Pure Ni200 / Ni201:
Nickel Content:
Ni200: 99.998% pure nickel.
Ni201: 99.996% pure nickel (slightly lower carbon content than Ni200).
Mechanical Properties:
Tensile Strength: Approximately 310-550 MPa (45-80 ksi) depending on the temper and thickness of the material.
Yield Strength: 170-340 MPa (25-50 ksi).
Elongation: Generally 40-50%, which indicates its good ductility.
Hardness: Rockwell B hardness around 60-85.
Corrosion Resistance: Ni200/Ni201 demonstrates excellent resistance to alkalis, acids, and saltwater environments. It is particularly resistant to hydrochloric acid and sulfuric acid at lower concentrations and is resistant to corrosion by many other corrosive chemicals.
Thermal Properties:
Melting Point: Around 1,455°C (2,651°F).
Coefficient of Thermal Expansion: Relatively low, which provides stability under temperature fluctuations.
Electrical Conductivity: Ni200 has good electrical conductivity, making it useful in applications requiring both electrical conductivity and resistance to oxidation.
3. Differences Between Ni200 and Ni201:
Ni200: The primary distinction of Ni200 is its higher carbon content, which is typically around 0.15%. This makes it more suitable for lower-temperature applications.
Ni201: Has a lower carbon content (less than 0.02%), which provides superior high-temperature performance and resistance to embrittlement, making it ideal for applications where the material is subjected to high temperatures for extended periods.
4. Applications of Ni200 / Ni201 Plates:
Ni200 and Ni201 are commonly used in industries that require high purity, strength, and corrosion resistance, including:
Electronics:
Used in electronics manufacturing, particularly in components requiring precise electrical properties and low impurities.
Nickel plating in electronic components like connectors and switchgear.
Chemical Processing:
Employed in environments where the materials are exposed to corrosive chemicals, including the chemical industry, pharmaceutical manufacturing, and food processing.
Ni200 and Ni201 plates are used for chemical tanks, pipes, and other equipment requiring high resistance to aggressive chemicals.
Aerospace:
Ni201 is used in aerospace applications requiring materials that can endure high-temperature environments without becoming brittle.
Marine Industry:
The plates are also used in marine applications, especially for saltwater environments due to their corrosion resistance.
Nuclear Industry:
Both Ni200 and Ni201 are utilized in nuclear reactor components because of their stability under radiation exposure and high temperatures.
Battery Technologies:
In battery manufacturing, especially for lithium-ion batteries, where high purity and conductive properties are required.
Chlorine and Alkaline Environments:
Used in chlorine gas production and other high-temperature applications where nickel's resistance to chlorine and other reactive chemicals is critical.
5. Grades and Specifications:
N4 / N6 Nickel Charger Plate:
N4 and N6 are classifications for the surface finish and purity of nickel.
N4 refers to nickel plates with a specific finish that ensures smooth surface quality suitable for various applications.
N6 is an even higher-quality finish, providing better surface smoothness for applications requiring more stringent specifications.
6. Advantages of High-Purity Ni200/Ni201 Plates:
High Corrosion Resistance: Particularly in alkaline solutions, organic acids, and saltwater, ensuring longer service life in corrosive environments.
Good Mechanical Strength: Maintains structural integrity in high-stress applications.
Excellent Fabricability: Can be easily welded, machined, and formed, making it adaptable to different design and manufacturing processes.
High Purity: The purity level (99.998% or 99.996%) makes these materials highly reliable for precision applications in industries such as electronics and chemical processing.
Resistant to High Temperatures: Particularly Ni201, which offers improved high-temperature performance compared to Ni200.
Non-magnetic: Pure nickel plates are non-magnetic, which is useful in certain applications that require non-magnetic materials.
7. Welding and Fabrication:
Welding: Both Ni200 and Ni201 can be welded using conventional methods like TIG (Tungsten Inert Gas) and MIG (Metal Inert Gas) welding. It is essential to use appropriate filler materials and shielding gases to avoid contamination and ensure optimal weld quality.
Fabrication: These materials are suitable for fabrication into various shapes and sizes, such as plates, sheets, rods, and tubes.
8. Standards and Specifications:
Ni200 / Ni201 Plates typically conform to several standards and specifications:
ASTM B162: Standard Specification for Nickel (Ni) Plates and Sheets.
ASTM B127: Standard Specification for Nickel-Copper Alloy (UNS N04400) Plates, Sheets, and Strip.
UNS N200 / UNS N201: The UNS (Unified Numbering System) designations for pure nickel grades.
Conclusion:
High-Pure Ni200 and Ni201 Plates (with purity levels of 99.998% and 99.996%) are essential materials in a wide range of high-performance applications. Their outstanding corrosion resistance, strength, and ductility make them ideal for industries such as chemical processing, electronics, aerospace, and marine. When selecting Nickel Charger Plates (such as N4 and N6 grades), you ensure excellent surface finish and reliability in demanding environments.
