Stainless Steel 317 Wire Alloy

Stainless Steel 317 is a high-performance austenitic stainless steel wire alloy containing approximately 18–20% chromium, 11–15% nickel, and 3–4% molybdenum, providing exceptional corrosion resistance in aggressive chemical and chloride-containing environments. The higher molybdenum content of SS317 offers improved resistance to pitting, crevice corrosion, and chemical attack compared to Type 316, making it particularly well suited for chemical processing equipment, pollution control systems, marine components, wire forms, springs, fasteners, and other demanding applications requiring superior corrosion resistance and long-term durability in harsh operating conditions.

Terms for Stainless Steel 317 Wire Alloys Available

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

    • 317 Stainless Steel
    • Stainless Steel 317
    • Type 317
    • AISI 317
    • Alloy 317
    • UNS S31700
    • SS 317
    • SS317
    • Grade 317
    • High Molybdenum Stainless Steel
    • Molybdenum-Bearing Stainless Steel
    • 18-13-3 Stainless Steel
    • 18Cr-13Ni-3Mo Stainless Steel
    • SAE 317
    • EN 1.4449
    • X5CrNiMo17-13-3
    • SUS 317
    • DIN 1.4449
    • W.Nr. 1.4449
    • ASTM 317
    • Chromium-Nickel-Molybdenum Austenitic Stainless Steel
    • Corrosion Resistant Stainless Steel
    • Chemical Process Stainless Steel

Other Names for Stainless Steel 317

Stainless steel 317 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 317 may be referenced through material standards tied to specific product forms and applications rather than by one simple trade name alone.

  • Stainless Steel 317 / 317 Stainless Steel

    Stainless Steel 317 is the plain-language commercial name used by manufacturers, distributors, engineers, and buyers throughout the stainless steel industry. This name can be further shortened to SS317 or SS 317. 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 stainless steel grade rather than by a formal standards designation.
  • Type 317

    Stainless Steel 317 is the plain-language commercial name used by manufacturers, distributors, engineers, and buyers throughout the stainless steel industry. This name can be further shortened to SS317 or SS 317. 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 stainless steel grade rather than by a formal standards designation

  • AISI 317

    AISI 317 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 317 immediately identifies the material as the widely recognized high-molybdenum 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.

  • Alloy 317

    AISI 317 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 317 immediately identifies the material as the widely recognized high-molybdenum 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 S31700

    UNS S31700 is the official Unified Numbering System (UNS) designation for Stainless Steel 317. 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 317 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 317

    Grade 317 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 317 vs. Grade 316 for example.

  • High Molybdenum Stainless Steel

    High Molybdenum Stainless Steel is a common descriptive term for Stainless Steel 317, highlighting its increased molybdenum content compared to standard Type 316. Best for corrosion-resistance discussions, technical overviews, chemical processing applications, and alloy comparisons. This designation emphasizes the alloy’s enhanced resistance to pitting, crevice corrosion, and chemical attack, making Stainless Steel 317 a preferred choice for demanding environments where superior corrosion performance is required.

  • Molybdenum-Bearing Stainless Steel

    Molybdenum-Bearing Stainless Steel is a general technical description commonly used for Stainless Steel 317 because of its elevated molybdenum content, which enhances resistance to pitting, crevice corrosion, and chemical attack. Best for educational content, metallurgy discussions, and corrosion-resistance comparisons. This designation highlights one of the alloy’s key performance characteristics and helps distinguish Stainless Steel 317 from standard chromium-nickel stainless steel grades such as Type 304 and Type 316.

  • 18-13-3 Stainless Steel

    18-13-3 Stainless Steel is a chemistry-based designation commonly used to describe Stainless Steel 317 based on its approximate composition of 18% chromium, 13% nickel, and 3% molybdenum. Best for educational content, alloy comparisons, and simplified chemistry discussions. This designation highlights the alloy’s enhanced corrosion resistance and places it within the family of high-molybdenum austenitic stainless steels, although it is not precise enough on its own for ordering material because multiple specifications may have similar chemistry ranges.

  • 18Cr-13Ni-3Mo Stainless Steel

    18Cr-13Ni-3Mo Stainless Steel is a chemistry-based designation commonly used to describe Stainless Steel 317 based on its approximate composition of 18% chromium, 13% nickel, and 3% molybdenum. Best for educational content, alloy comparisons, and technical discussions focused on stainless steel chemistry. This designation highlights the alloy’s high molybdenum content and enhanced corrosion resistance while identifying it as a member of the austenitic stainless steel family.
  • SAE 317

    SAE 317 is a designation associated with the Society of Automotive Engineers (SAE) material numbering system and is commonly referenced in engineering, manufacturing, and procurement environments where SAE standards and terminology are used. Best for corrosion-resistant applications, engineering documentation, material specifications, and cross-referencing between industry standards. The use of SAE 317 clearly identifies the material as the widely recognized high-molybdenum austenitic stainless steel grade, helping engineers and buyers align material requirements across drawings, specifications, certifications, and purchasing documents.
  • EN 1.4449

    EN 1.4449 is the European material number designation for Stainless Steel 317 within the EN (European Norm) standards system. Best for European engineering specifications, international procurement, material certifications, technical documentation, and cross-referencing between global stainless steel standards. The use of EN 1.4449 immediately identifies the material according to a standardized European classification, making it easier to match Stainless Steel 317 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.
  • X5CrNiMo17-13-3

    X5CrNiMo17-13-3 is the European chemical designation for Stainless Steel 317 and is commonly used in EN standards, engineering specifications, material certifications, and technical documentation. Best for European engineering drawings, international procurement, and applications where the alloy’s chemistry must be clearly identified. The designation X5CrNiMo17-13-3 describes the alloy based on its chemical composition, indicating an austenitic stainless steel containing approximately 17% chromium, 13% nickel, and 3% molybdenum. This designation is widely recognized throughout Europe and can be cross-referenced to EN 1.4449, UNS S31700, and other equivalent Stainless Steel 317 specifications.
  • SUS 317

    SUS 317 is the Japanese Industrial Standards (JIS) designation for Stainless Steel 317 and is widely used throughout Japan and in global supply chains that source, manufacture, or specify materials according to Japanese standards. Best for international procurement, engineering specifications, material certifications, manufacturing documentation, and cross-referencing between global stainless steel standards. The use of SUS 317 immediately identifies the material as the Japanese equivalent of Stainless Steel 317, making it easier for engineers, buyers, and quality professionals to verify material compatibility across regional specifications. This designation frequently appears on Japanese engineering drawings, mill certificates, and technical documents and serves as a recognized international reference for this low-carbon, molybdenum-bearing austenitic stainless steel grade.
  • DIN 1.4449

    DIN 1.4449 is the German material designation for Stainless Steel 317 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 1.4449 provides a standardized identifier that helps engineers and buyers match Stainless Steel 317 across global standards systems.
  • ASTM 317

    ASTM 317 is a common reference to Stainless Steel 317 when specified under ASTM material standards. Best for engineering specifications, procurement documents, quality requirements, and manufacturing applications that follow ASTM standards. The designation ASTM 317 helps identify the alloy within ASTM-controlled specifications and is frequently used in technical documentation, certifications, and material purchasing requirements, particularly where enhanced corrosion resistance and high molybdenum content are important.
  • W.Nr. 1.4449

    W.Nr. 1.4449 is the Werkstoffnummer (material number) designation for Stainless Steel 317 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. 1.4449 provides a standardized material identifier that helps engineers and buyers match Stainless Steel 317 across European and global standards systems.

  • Chromium-Nickel-Molybdenum Austenitic Stainless Steel

    Chromium-Nickel-Molybdenum Austenitic Stainless Steel is a broad technical description used to classify Stainless Steel 317 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 molybdenum content, which contribute to its excellent corrosion resistance, toughness, and durability, while identifying it as a member of the austenitic stainless steel family.

  • Corrosion Resistant Stainless Steel

    Corrosion Resistant Stainless Steel is a general technical description commonly used for Stainless Steel 317 because of its superior resistance to chemical attack, pitting, and crevice corrosion. Best for educational content, industry overviews, and corrosion-resistance comparisons. This designation highlights one of the alloy’s most important performance characteristics and helps distinguish Stainless Steel 317 from conventional stainless steel grades used in less demanding environments.

  • Chemical Process Stainless Steel

    Chemical Process Stainless Steel is a common industry description for Stainless Steel 317 due to its exceptional resistance to corrosive chemicals, acids, and harsh processing environments. Best for chemical manufacturing, pollution control equipment, pharmaceutical processing, and technical content focused on corrosion-resistant materials. This designation highlights the alloy’s high molybdenum content and superior corrosion performance, making Stainless Steel 317 a preferred choice for demanding chemical processing applications.

Stainless Steel 317 Wire Alloy Chemical Composition

Stainless Steel 317 has a density of approximately 8.00 g/cm³ (0.289 lb/in³) and is composed of 18.00–20.00% chromium, 11.00–15.00% nickel, 3.00–4.00% molybdenum, 1.00% silicon, 2.00% manganese, 0.08% maximum carbon, and 0.030% maximum sulfur, with the balance consisting of iron. It is a tough, ductile, austenitic stainless steel known for its exceptional resistance to pitting, crevice corrosion, and chemical attack. The higher molybdenum content of Type 317 provides improved corrosion resistance compared to Type 316, making it a preferred choice for chemical processing equipment, pollution control systems, marine components, wire forms, springs, fasteners, and other demanding applications operating in highly corrosive environments.

Stainless Steel 317 Wire Alloy Benefits

  • Corrosion Resistance: Stainless steel wire alloys resist rust and oxidation, making them ideal for harsh environments.
  • High Strength & Durability: Experience excellent tensile strength and long-lasting performance, even under heavy loads.
  • Heat & Temperature Resistance: Maintain structural integrity and performance in high-temperature applications.
  • Low Maintenance: Stainless steel requires minimal upkeep due to its self-healing chromium oxide layer.
  • Recyclability: Stainless steel is 100% recyclable, making it an environmentally sustainable material choice.

Which Industries Use Stainless Steel 317 Wire Alloys?

Stainless steel wire alloys are used in various industries, including:

  • Aerospace: Stainless steel wire alloys are used in aircraft cables, fasteners and structural components for their strength and corrosion resistance.
  • Automotive: Found in exhaust systems, springs and safety components, stainless steel wire enhances durability and heat resistance.
  • Marine: Used in rigging, mooring and corrosion-resistant marine hardware to withstand exposure to seawater.
  • Medical & Healthcare: Stainless steel wire is vital for surgical instruments, orthodontic applications, and medical implants due to its biocompatibility.
  • Oil & Gas: Stainless steel wire is utilized in safety cables, wire mesh screens and high-pressure components in harsh drilling environments.

What Diameters Are Available for Stainless Steel 317 Wire Alloys?

Sunset Wire can manufacture custom diameters of SS317 for your project. Common sizes of Type 317 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

Stainless Steel 317 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.

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

Frequently Asked Questions

What are stainless steel wire alloys?
Stainless steel wire alloys are high-strength, corrosion-resistant wires composed of iron, chromium, nickel and other elements. They are designed to provide superior durability and heat resistance across various applications.

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