Nickel 205 Wire Alloy

Nickel 205 is a commercially pure wrought nickel alloy containing approximately 99.0% minimum nickel with carefully controlled levels of carbon and other residual elements. Designed primarily for electronic and electrical applications, Nickel 205 offers excellent magnetic properties, outstanding electrical conductivity, good corrosion resistance, and reliable performance in glass-to-metal sealing applications. Its controlled chemistry helps reduce graphite formation and provides consistent thermal expansion characteristics, making Nickel 205 a preferred choice for electronic lead wires, vacuum tubes, cathodes, semiconductor components, glass-sealing applications, wire forms, and other precision electrical and electronic applications requiring high-purity nickel and dependable performance.

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Terms for Nickel 205 Wire Alloys Available

Nickel 205 alloy wire is identified under multiple naming conventions, including grade, alloy, and UNS designations; depending on the specification, industry, or standard being used.

    • Nickel 205
    • 205 Nickel
    • Nickel Alloy 205
    • Alloy 205
    • N205
    • UNS N02205
    • Commercially Pure Nickel 205
    • CP Nickel 205
    • Pure Nickel 205
    • Electronic Grade Nickel
    • Glass-Sealing Nickel
    • Low Residual Nickel Alloy
    • Controlled Chemistry Nickel
    • Vacuum Tube Grade Nickel
    • Electronic Component Nickel
    • ASTM B160 Nickel 205
    • W.Nr. 2.4061
    • DIN 2.4061
    • EN 2.4061
    • Ni 205
    • Nickel 205 Wire
    • Nickel Alloy Wire 205

Other Names for Nickel 205

Nickel 205 alloys are known by several names depending on the standard, specification, or drawing being used. Understanding these alternate names matters because the same alloy can appear under different designation systems across quotes, certifications, standards, and legacy prints. For buyers and engineers working with wire, this is especially important, since Nickel 205 may be referenced through material standards tied to specific product forms and applications rather than by one simple trade name alone.

  • Nickel 205 / 205 Nickel

    Nickel 205 is the plain-language commercial name used by manufacturers, distributors, engineers, and buyers throughout the nickel alloy industry. This name can be further shortened to Ni 205, N205, or simply Alloy 205. Best for website copy, product pages, blogs, and non-technical sales language where readability and recognition are most important. It is one of the most widely recognized market-facing names for the alloy and the easiest designation for buyers who are searching by common alloy number rather than by a formal standards designation such as UNS N02205 or W.Nr. 2.4061.

  • Alloy 205

    Alloy 201 is a general commercial shorthand and conversational naming style used throughout the nickel alloy industry when the nickel alloy family is already understood. Best for casual product discussions, internal communication, sales conversations, and simplified technical language where the audience already knows the material is nickel. It is concise, recognizable, and easy to read, but it is less precise than formal designation systems because the term “alloy” by itself does not identify the governing specification, standards organization, or numbering system associated with the material.

  • UNS N02205

    UNS N02205 is the official Unified Numbering System (UNS) designation for Nickel 205. Best for formal material identification, cross-referencing between industry standards, quality assurance documentation, mill certifications, engineering specifications, and multi-standard procurement requirements. This designation serves as the clearest and most unambiguous identifier when matching Nickel 205 across different specification systems and international standards. It is especially useful when a drawing, certification, purchase order, or compliance document requires a formal material designation rather than a commercial or trade-style name.

  • Commercially Pure Nickel 205

    Commercially Pure Nickel 205 is a common industry designation for Nickel 205 because of its high nickel content and carefully controlled chemistry. Best for educational content, material specifications, electronic applications, and technical discussions focused on high-purity nickel alloys. This designation highlights the alloy’s excellent corrosion resistance, electrical conductivity, and controlled residual element content, which makes it particularly well suited for electronic components, vacuum devices, and glass-to-metal sealing applications. While widely recognized throughout industry, Commercially Pure Nickel 205 is a descriptive classification rather than a formal standards designation such as UNS N02205.

  • Pure Nickel 205

    Pure Nickel 205 is a common commercial and technical designation for Nickel 205, emphasizing its high-purity nickel content and carefully controlled chemistry. Best for product descriptions, educational content, material specifications, and discussions focused on electrical, electronic, and glass-sealing applications. This designation highlights the alloy’s excellent corrosion resistance, electrical conductivity, and consistent thermal expansion characteristics, making it a popular choice for electronic lead wires, vacuum devices, glass-to-metal seals, and other precision electronic components. While widely recognized throughout industry, Pure Nickel 205 is a descriptive name rather than a formal material designation such as UNS N02205.

  • Electronic Grade Nickel

    Electronic Grade Nickel is a common technical description for Nickel 205 because of its high purity, controlled chemistry, and excellent electrical properties. Best for electronic components, lead wires, vacuum devices, semiconductor applications, and precision electrical equipment. This designation highlights the alloy’s low residual element content and consistent performance characteristics, which help ensure reliable conductivity, thermal stability, and compatibility with specialized electronic manufacturing processes. Nickel 205 is widely used where dependable performance and material consistency are critical in electronic and electrical applications.

  • Glass-Sealing Nickel

    Glass-Sealing Nickel is a common technical description for Nickel 205 because of its controlled chemistry and thermal expansion characteristics, which make it well suited for glass-to-metal sealing applications. Best for vacuum tubes, electronic components, hermetic seals, lighting products, electronic lead wires, and other precision electrical applications. This designation highlights the alloy’s ability to form reliable, durable seals with specialized glasses while maintaining excellent electrical conductivity, corrosion resistance, and dimensional stability. Nickel 205 is widely used where long-term sealing integrity and consistent performance are critical.

  • Low Residual Nickel Alloy

    Low Residual Nickel Alloy is a common technical description for Nickel 205 because it is produced with carefully controlled levels of carbon and other residual elements to provide consistent performance in specialized electrical and electronic applications. Best for electronic components, vacuum devices, glass-to-metal seals, lead wires, and precision manufacturing applications. This designation highlights the alloy’s controlled chemistry, which helps improve thermal stability, electrical performance, and compatibility with glass-sealing processes, making Nickel 205 a preferred choice where material purity and consistency are critical.

  • Controlled Chemistry Nickel

    Controlled Chemistry Nickel is a common technical description for Nickel 205 because it is manufactured with carefully controlled levels of carbon and other residual elements to ensure consistent performance in specialized electronic and glass-sealing applications. Best for electronic components, vacuum devices, lead wires, hermetic seals, and precision electrical equipment. This designation highlights the alloy’s tightly controlled composition, which helps provide reliable thermal expansion characteristics, stable electrical properties, and excellent compatibility with glass-to-metal sealing processes, making Nickel 205 a preferred material where precision and consistency are critical.

  • Vacuum Tube Grade Nickel

    Vacuum Tube Grade Nickel is a common technical description for Nickel 205 because of its high purity, controlled chemistry, and excellent performance in vacuum and electronic applications. Best for vacuum tubes, electronic lead wires, cathodes, electronic components, and glass-to-metal sealing applications. This designation highlights the alloy’s low residual element content and stable thermal expansion characteristics, which help provide reliable performance, good electrical conductivity, and long-term stability in demanding vacuum and electronic environments. Nickel 205 is widely used where material consistency and dependable electrical properties are critical.

  • ASTM B160 Nickel 205

  • W.Nr. 2.4061

    W.Nr. 2.4061 is the Werkstoffnummer (material number) designation for Nickel 205 and is widely used in European engineering specifications, certifications, and technical documentation. Best for international procurement, material cross-referencing, and quality documentation. The designation W.Nr. 2.4061 provides a standardized material identifier that helps engineers and buyers match Nickel 205 across European and global standards systems while identifying it as a commercially pure nickel alloy with controlled chemistry for electronic, vacuum, and glass-sealing applications.

  • DIN 2.4061

    DIN 2.4061 is the German material designation for Nickel 205 and is commonly used in European engineering specifications, material certifications, and procurement documents. Best for international sourcing, technical documentation, and material cross-referencing. The designation DIN 2.4061 provides a standardized identifier that helps engineers and buyers match Nickel 205 across global standards systems while identifying it as a commercially pure nickel alloy with controlled chemistry for electronic, vacuum, and glass-sealing applications.

  • EN 2.4061

    EN 2.4061 is the European material number designation for Nickel 205 within the EN (European Norm) standards system. Best for European engineering specifications, international procurement, material certifications, technical documentation, and cross-referencing between global nickel alloy standards. The use of EN 2.4061 immediately identifies the material according to a standardized European classification, making it easier to match Nickel 205 across international supply chains and regulatory requirements. This designation is widely recognized throughout Europe and is commonly found on mill certificates, engineering drawings, quality documentation, and material specifications where compliance with European standards is required.

Nickel 205 Wire Alloy Chemical Composition

Nickel 205 has a density of approximately 8.89 g/cm³ (0.321 lb/in³) and is composed of 99.0% minimum nickel, 0.25% maximum copper, 0.40% maximum iron, 0.35% maximum manganese, 0.35% maximum silicon, 0.02% maximum carbon, and 0.01% maximum sulfur, with trace amounts of other elements permitted within specification limits. It is a commercially pure nickel alloy known for its controlled chemistry, excellent electrical conductivity, reliable corrosion resistance, and stable thermal expansion characteristics. The carefully controlled carbon and residual element content of Type 205 makes it particularly well suited for glass-to-metal sealing, electronic components, vacuum devices, lead wires, cathodes, and other precision applications requiring high-purity nickel, dependable electrical performance, and long-term dimensional stability.

Nickel 205 Wire Alloy Benefits

  • Corrosion Resistance: Nickel alloys resist oxidation, rust and chemical corrosion, making them ideal for harsh environments.
  • High-Temperature Performance: Nickel alloys maintain their strength and integrity in extreme heat.
  • Strength & Durability: Nickel wire alloys are highly durable and resistant to mechanical stress.
  • Electrical Conductivity: Certain nickel alloys provide stable electrical resistance.
  • Biocompatibility: Nickel alloys are widely used in medical devices and implants due to their compatibility with the human body and resistance to sterilization processes.

Which Industries Use Nickel 205 Wire Alloys?

Nickel wire alloys are used in various industries, including:

  • Aerospace: Nickel wire alloys are used in aircraft and spacecraft components due to their high-temperature resistance and strength in extreme environments.
  • Automotive: Found in sensors, exhaust systems and battery components because of its durability and heat resistance.
  • Energy & Power Generation: Nuclear reactors, fuel cells and turbines use nickel wire alloys to provide stability and performance.
  • Marine: Found in seawater filtration, cables and structural components due to superior corrosion resistance in saltwater environments.
  • Medical: Nickel wire alloys are used in medical devices, implants and surgical instruments for their biocompatibility and resistance to sterilization processes.

What Diameters Are Available for Nickel 205 Wire Alloys?

Sunset Wire can manufacture custom diameters of N205 for your project. Common sizes of UNS N02205 include:

  • 0.0625 inches
  • 0.092 inches
  • 0.105 inches
  • 0.120 inches
  • 0.125 inches
  • 0.135 inches
  • 0.145 inches
  • 0.148 inches
  • 0.156 inches
  • 0.162 inches
  • 0.177 inches
  • 0.1875 inches
  • 0.192 inches
  • 0.225 inches
  • 0.243 inches
  • 0.250 inches
  • 0.312 inches
  • 0.375 inches
  • 0.437 inches
  • 0.500 inches

Nickel 205 Made to Order

Sunset Wire stocks a large inventory of stainless steel wire to ensure you get it fast. Get your wire in 1 lb cans, 1 lb spools or 5 lb spools. Other spool sizes are available upon request.

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Why Choose Sunset Wire?

Sunset Wire provides domestically drawn wire in various diameters, lengths and packages. Get your stainless steel wire delivered anywhere in the US thanks to our large inventory and dedicated supply chain management capabilities.

  • Built on 70+ years of industry experience
  • Certifications include AS9100
  • All wire is proudly made in the USA
  • Fast shipping speed to get your wire on time
  • Sustainable packaging that aligns with your green initiatives
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Frequently Asked Questions

What are nickel wire alloys?

Nickel wire alloys are metal wires primarily composed of nickel, often combined with other elements like chromium, copper, iron or molybdenum.

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