Stainless Steel 317 Flanges are high-performance piping components engineered for demanding industrial, mechanical, and structural engineering applications. American Metallix Steel Co. manufactures precision-machined SS 317 flanges designed to perform reliably in corrosive and high-temperature environments. These flanges are widely used to connect pipes, valves, pumps, and other equipment in critical systems where leak-proof joints and structural stability are essential. In industries such as chemical processing, oil and gas, marine engineering, and power generation, Stainless Steel 317 Flanges provide the strength and corrosion resistance required for safe and long-lasting operation. Their robust construction and dimensional accuracy make them suitable for pressure equipment, industrial piping networks, and heavy fabrication projects where material performance directly impacts operational efficiency.
Stainless Steel 317 is an austenitic chromium-nickel stainless steel alloy enriched with a higher percentage of molybdenum compared to 316 grades. The increased molybdenum content enhances resistance to pitting, crevice corrosion, and chemical attack, especially in chloride-rich and acidic environments. The typical composition includes chromium, nickel, and 3 to 4 percent molybdenum, delivering superior corrosion resistance and mechanical strength. Metallurgically, Stainless Steel 317 Flanges feature a stable austenitic structure that provides excellent toughness, ductility, and non-magnetic properties in the annealed condition. The alloy maintains structural integrity under elevated temperatures and demonstrates good resistance to scaling and oxidation. These characteristics make SS 317 flanges suitable for high-pressure piping systems and thermal processing units. From a performance perspective, these flanges exhibit high tensile strength, reliable yield strength, and excellent weldability. They can be fabricated into various types such as weld neck flanges, slip-on flanges, blind flanges, and threaded flanges to meet specific piping system requirements. Their smooth surface finish and precise machining ensure tight sealing surfaces and consistent gasket performance.
Stainless Steel 317 Flanges offer superior corrosion resistance in aggressive chemical environments, including exposure to sulfuric acid, chlorides, and other corrosive media. This makes them a preferred choice for chemical plants, refineries, and marine installations where long-term reliability is critical. The high molybdenum content enhances durability and resistance to localized corrosion, reducing the risk of premature failure in pressure piping systems. These flanges maintain strength under both high-pressure and high-temperature conditions, ensuring structural integrity in boilers, heat exchangers, and power plant equipment.
Machinability and weldability further contribute to their versatility. Stainless Steel 317 Flanges can be easily integrated into stainless steel pipes, tubes, plates, and coils during fabrication. Their long service life and reduced maintenance requirements translate into cost efficiency over the lifecycle of industrial projects. For engineers and procurement teams seeking dependable flange solutions, SS 317 offers a balanced combination of strength and corrosion protection.
In petrochemical and refinery operations, Stainless Steel 317 Flanges Manufacturers supply heavy-duty flanges used in high-pressure piping systems handling aggressive chemicals and hydrocarbons. The enhanced resistance to pitting ensures leak-free performance in complex processing units. Within marine and offshore installations, Stainless Steel 317 Flanges Suppliers provide corrosion-resistant flange solutions for seawater systems, desalination plants, and coastal infrastructure. The material’s durability in chloride environments supports long-term structural safety and operational continuity.
For industrial maintenance and fabrication sectors, Stainless Steel 317 Flanges Stockists maintain a ready inventory of standard and custom-size flanges used in plant expansion, pipeline upgrades, and equipment replacement projects. Immediate availability helps reduce downtime in power plants and chemical facilities. In global infrastructure and energy projects, Stainless Steel 317 Flanges Exporters deliver precision-engineered flanges to international markets for use in pressure vessels, structural assemblies, and high-temperature process lines. Compliance with international specifications ensures reliable performance across diverse industrial environments.
Stainless Steel 317 Flanges are commonly manufactured in accordance with ASTM A182, which covers forged or rolled alloy and stainless steel pipe flanges for high-temperature service. The equivalent ASME specification is ASME SA182, widely used for pressure vessel and piping system applications. These standards define chemical composition, mechanical properties, heat treatment requirements, and testing procedures to ensure product quality and reliability. Adherence to ASTM and ASME codes guarantees that SS 317 flanges meet stringent requirements for industrial piping, boilers, and structural engineering projects operating under high pressure and elevated temperatures.
Steel products such as flanges, bars, pipes, tubes, plates, sheets, and coils are classified according to internationally recognized standards including ASTM, ASME, EN, DIN, JIS, and ISO. ASTM and ASME standards are commonly applied in North American and global energy sectors for pressure equipment and industrial fabrication. EN and DIN specifications govern European structural and mechanical engineering materials, while JIS standards apply to Japanese industrial systems. ISO standards provide global consistency in quality management and testing. Stainless Steel 317 is designated based on its chemical composition and alloy series, ensuring accurate identification for use in piping systems, structural frameworks, and chemical processing equipment worldwide.
American Metallix Steel Co. UNS S30900 Forge Flange, 309 SS Reducing Flange, Stainless Steel 317 Blind Flange, SS 309 Longweld Neck Flange, ASTM A182 SS 309 Weldneck Flange, DIN 1.4828 Flat Flange, SS 309 Slip On Flange, UNS S30900 Square Flange at the best price in India
Request Latest Price & Stock AvailabilityStainless Steel 317 Flanges are manufactured according to ASTM A182 and ASME SA182 specifications. They are available in multiple sizes, pressure classes, face types and international dimensional standards for industrial piping applications.
| Specification | Details |
|---|---|
| Specification | ASTM A182 / ASME SA182 |
| Dimension Standard | ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
| Standard | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc. |
| Size | 1/2" (15 NB) to 48" (1200 NB) |
| Class / Pressure | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64, etc. |
| Flange Face Type | Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
| DIN Flanges | DIN 2527, 2566, 2573, 2576, 2641, 2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637, 2638, 2673 |
| JIS Flanges | JIS B2220 5K, JIS B2220 10K, JIS B2220 16K, JIS B2220 20K |
| BS Flanges | BS4504 PN 6, BS4504 PN 10, BS4504 PN 16, BS4504 PN 25, BS4504 PN 40, BS4504 PN 64, BS4504 PN 100, BS4504 PN 160, BS4504 PN 250, BS 10, BS Table D, BS Table E, BS Table F, BS Table H |
Stainless Steel 317 Flanges are available from 1/2 inch to 48 inches in pressure classes from 150# to 2500# and PN6 to PN64. ANSI, ASME, BS, DIN, EN and JIS configurations are available for different piping and project requirements.
Stainless Steel 317 Flanges contain controlled amounts of carbon, nickel, silicon, sulfur, manganese, phosphorus, chromium and molybdenum for dependable performance in industrial piping applications.
| Grade | C | Ni | Si | S | Mn | P | Cr | Mo |
|---|---|---|---|---|---|---|---|---|
| SS 309 | 0.20 max | 12.0 – 15.0 | 0.75 max | 0.03 max | 2.00 max | 0.045 max | 22.0 – 24.0 | – |
The table lists the supplied chemical composition values for Stainless Steel 317 Flanges. All values represent percentage by weight unless otherwise stated.
The mechanical properties of Stainless Steel 317 Flanges include density, melting point, tensile strength, yield strength and elongation values for demanding industrial piping applications.
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2% Offset) | Elongation |
|---|---|---|---|---|---|
| SS 309 | 8.0 g/cm³ | 1455°C (2650°F) | Psi – 89900, MPa – 620 | Psi – 45000, MPa – 310 | 45% |
These supplied values describe the density, melting point, tensile strength, yield strength and elongation for Stainless Steel 317 Flanges. Actual values may vary depending on dimensions, manufacturing condition, heat treatment and applicable standards.