347 stainless steel wire is identified under multiple naming conventions, including grade, alloy, and UNS designations; depending on the specification, industry, or standard being used.
Stainless Steel 347 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 Stainless Steel 347 may be referenced through material standards tied to specific product forms and applications rather than by one simple trade name alone.
Type 347 is the traditional “Type” grade designation used throughout stainless steel specifications and industry practice and appears in technical descriptions, engineering standards, and material references for Stainless Steel 347. Best for technical sales sheets, alloy descriptions, engineering drawings, and legacy documents where stainless steel grades are identified using the traditional Type system. Many engineers, buyers, and metallurgists still reference stainless grades in “Type” terminology, making this designation familiar, easy to recognize, and well aligned with longstanding industry documentation.
AISI 347 is the designation derived from the American Iron and Steel Institute (AISI) stainless steel grade classification system. Best for engineering discussions, procurement cross-references, technical specifications, and older North American documents that continue to use AISI terminology. The use of AISI 347 immediately identifies the material as the widely recognized niobium-stabilized austenitic stainless steel grade rather than simply a commercial trade name, making it useful for technical communication, material selection, and specification review across a wide range of industries.
UNS S34700 is the official Unified Numbering System (UNS) designation for Stainless Steel 347. 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 Stainless Steel 347 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.
Grade 347 is a generic technical descriptor commonly used in datasheets, engineering references, technical articles, and educational materials for the alloy. Best for technical overviews, material comparisons, specification discussions, and informational content. It reads naturally in explanatory writing and is particularly useful when comparing stainless steel grades, such as Grade 347 vs. Grade 321 or Grade 347 vs. Grade 304. Because it uses straightforward technical language rather than a specific standards designation, Grade 347 is widely understood by engineers, buyers, students, and industry professionals across a broad range of applications.
Niobium Stabilized Stainless Steel is a common technical description for Stainless Steel 347, highlighting the addition of niobium (also known as columbium), which helps prevent chromium carbide precipitation during welding and elevated-temperature service. Best for educational content, metallurgy discussions, high-temperature applications, and alloy comparisons. This designation emphasizes one of the alloy’s most important characteristics—its ability to maintain corrosion resistance and resist intergranular corrosion after welding and prolonged exposure to heat—making Stainless Steel 347 a popular choice for aerospace, power generation, and thermal processing applications.
Columbium Stabilized Stainless Steel is a common technical description for Stainless Steel 347, using the older industry name columbium for the element now known as niobium. Best for educational content, metallurgy discussions, engineering specifications, and high-temperature applications. This designation highlights the alloy’s stabilization against chromium carbide precipitation during welding and elevated-temperature service, helping Stainless Steel 347 maintain corrosion resistance and resist intergranular corrosion in demanding thermal environments.
Stabilized Austenitic Stainless Steel is a general technical description for Stainless Steel 347, highlighting its niobium-stabilized chemistry and austenitic microstructure. Best for educational content, metallurgy discussions, and technical overviews of stainless steel families. This designation emphasizes the alloy’s ability to resist sensitization and intergranular corrosion following welding or prolonged exposure to elevated temperatures, making Stainless Steel 347 a reliable choice for high-temperature and welded applications.
Heat Resistant Stainless Steel is a common industry description for Stainless Steel 347 because of its ability to maintain strength, corrosion resistance, and oxidation resistance at elevated temperatures. Best for aerospace components, exhaust systems, boilers, heat exchangers, thermal processing equipment, and other demanding high-temperature applications. This designation highlights the alloy’s niobium stabilization and excellent performance in environments where prolonged exposure to heat could affect the properties of conventional stainless steel grades.
High Temperature Stainless Steel is a common industry description for Stainless Steel 347 due to its ability to maintain strength, oxidation resistance, and corrosion resistance during prolonged exposure to elevated temperatures. Best for aerospace components, exhaust systems, boilers, heat exchangers, thermal processing equipment, and other demanding high-heat applications. This designation highlights the alloy’s niobium-stabilized chemistry, which helps maintain corrosion resistance and structural integrity while reducing the risk of sensitization during long-term high-temperature service.
18-10 Niobium Stainless Steel is a chemistry-based designation commonly used to describe Stainless Steel 347 based on its approximate composition of 18% chromium, 10% nickel, and a stabilizing addition of niobium (columbium). Best for educational content, alloy comparisons, and technical discussions focused on stainless steel chemistry. This designation highlights the alloy’s corrosion resistance, elevated-temperature performance, and niobium stabilization, which helps prevent chromium carbide precipitation during welding and prolonged exposure to heat.
Chromium-Nickel-Niobium Austenitic Stainless Steel is a broad technical description used to classify Stainless Steel 347 based on its alloy chemistry and crystal structure. Best for educational content, metallurgy discussions, and technical overviews of stainless steel families. This designation highlights the alloy’s chromium, nickel, and niobium content, which contribute to its corrosion resistance, toughness, oxidation resistance, and elevated-temperature performance, while identifying it as a stabilized member of the austenitic stainless steel family designed for welded and high-temperature service applications.
Stainless steel wire alloys are used in various industries, including:
Sunset Wire can manufacture custom diameters of SS347 for your project. Common sizes of Type 347 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.