Nickel 201 is a commercially pure wrought nickel wire alloy containing approximately 99.0% minimum nickel with a significantly reduced carbon content compared to Nickel 200. The low-carbon chemistry of Nickel 201 improves resistance to intergranular embrittlement and graphitization at elevated temperatures, making it particularly well suited for service above 600°F (316°C). Nickel 201 offers excellent corrosion resistance, outstanding electrical and thermal conductivity, and good mechanical properties across a wide range of temperatures. It is commonly used for chemical processing equipment, caustic handling systems, electronic components, battery hardware, wire forms, aerospace applications, and other demanding environments requiring high-purity nickel, excellent corrosion resistance, and reliable high-temperature performance.
Nickel 201 alloy wire is identified under multiple naming conventions, including grade, alloy, and UNS designations; depending on the specification, industry, or standard being used.
Nickel 201 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 201 may be referenced through material standards tied to specific product forms and applications rather than by one simple trade name alone.
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 N02201 is the official Unified Numbering System (UNS) designation for Nickel 201. 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 201 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 201 is a common industry designation for Nickel 201 because of its 99.0% minimum nickel content and extremely low carbon chemistry. Best for educational content, material specifications, chemical processing applications, and technical discussions focused on high-purity nickel alloys. This designation highlights the alloy’s exceptional purity, excellent corrosion resistance, and outstanding electrical and thermal conductivity while distinguishing Nickel 201 from nickel alloys that contain larger amounts of alloying elements. The low-carbon composition also improves performance in elevated-temperature service by reducing the potential for intergranular embrittlement and graphitization. While widely recognized throughout industry, Commercially Pure Nickel 201 is a descriptive classification rather than a formal standards designation such as UNS N02201.
Pure Nickel 201 is a common commercial and technical designation for Nickel 201, emphasizing its high-purity nickel content of approximately 99.0% nickel minimum and its low-carbon composition. Best for product descriptions, educational content, material specifications, and discussions focused on corrosion resistance, conductivity, and elevated-temperature performance. This designation highlights the alloy’s exceptional purity, excellent resistance to many corrosive environments, and outstanding electrical and thermal conductivity, making it a popular choice for chemical processing equipment, electronic components, battery systems, wire forms, and industrial applications. While widely recognized throughout industry, Pure Nickel 201 is a descriptive name rather than a formal material designation such as UNS N02201.
Low Carbon Nickel 201 is a common descriptive name for Nickel 201, highlighting its reduced carbon content and improved performance at elevated temperatures compared to Nickel 200. Best for technical overviews, high-temperature applications, material comparisons, and educational content. This designation emphasizes the alloy’s ability to resist intergranular embrittlement and graphitization during prolonged exposure to elevated temperatures while maintaining the excellent corrosion resistance, electrical conductivity, and thermal conductivity associated with commercially pure nickel alloys.
ASTM B160 Nickel 201 is the designation used when Nickel 201 is supplied in accordance with ASTM B160, the industry specification covering nickel rod and bar products. Best for engineering specifications, procurement documents, quality requirements, and applications involving Nickel 201 rod, bar, and machined components. This designation helps identify the alloy within ASTM-controlled requirements and is frequently referenced in technical documentation, certifications, and purchasing specifications where the mechanical and chemical properties of Nickel 201 (UNS N02201) must conform to ASTM standards. ASTM B160 is commonly used when material traceability and compliance with recognized nickel alloy specifications are required.
W.Nr. 2.4068 is the Werkstoffnummer (material number) designation for Nickel 201 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. 2.4068 provides a standardized material identifier that helps engineers and buyers match Nickel 201 across European and global standards systems while identifying it as a commercially pure, low-carbon nickel alloy known for its excellent corrosion resistance, conductivity, and elevated-temperature performance.
DIN 2.4068 is the German material designation for Nickel 201 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 2.4068 provides a standardized identifier that helps engineers and buyers match Nickel 201 across global standards systems while identifying it as a commercially pure, low-carbon nickel alloy known for its excellent corrosion resistance, conductivity, and elevated-temperature performance.
EN 2.4068 is the European material number designation for Nickel 201 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 2.4068 immediately identifies the material according to a standardized European classification, making it easier to match Nickel 201 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.
High Temperature Nickel 201 is a common technical description for Nickel 201 because of its low-carbon chemistry and ability to maintain excellent properties during prolonged elevated-temperature service. Best for chemical processing equipment, thermal processing systems, electronic components, wire forms, and industrial applications operating above 600°F (316°C). This designation highlights the alloy’s resistance to intergranular embrittlement and graphitization at elevated temperatures while preserving the excellent corrosion resistance, electrical conductivity, and thermal conductivity associated with commercially pure nickel alloys.
Nickel wire alloys are used in various industries, including:
Sunset Wire can manufacture custom diameters of N201 for your project. Common sizes of UNS N02201 include:
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.
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.
Nickel wire alloys are metal wires primarily composed of nickel, often combined with other elements like chromium, copper, iron or molybdenum.