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Everything You Need to Know About Stainless Steel 317/317L Flanges – Sandvik

At Sandvik, we specialize in manufacturing premium-grade Stainless Steel 317/317L Flanges built to meet the demanding needs of modern industries. These flanges are engineered for superior corrosion resistance, high-temperature strength, and long-lasting durability. Whether you're working in chemical processing, power generation, or marine systems, Stainless Steel 317/317L flanges are trusted components for leak-proof, secure connections.

Stainless Steel 317/317L Flanges Manufacturers like Sandvik produce these components using high-alloy austenitic stainless steel. 317 is rich in molybdenum, offering better pitting and crevice corrosion resistance than standard grades like 304 or 316. 317L is the low-carbon version, which improves weldability and minimizes carbide precipitation during welding. Together, they offer a combination of mechanical strength and corrosion resistance that is perfect for aggressive environments.

One of the biggest advantages of Stainless Steel 317/317L Flanges Suppliers offer is their resistance to chemical attack. These flanges perform excellently in sulfuric acid, acetic acid, formic acid, and other harsh chemical environments. They also retain their mechanical properties at elevated temperatures, making them suitable for heat exchangers, pressure vessels, and reactors. In addition, their low carbon content reduces the risk of sensitization, especially in welded structures.

Stainless Steel 317/317L Flanges Stockists ensure steady availability of different types and dimensions to support diverse industrial applications. These flanges are widely used in industries like petrochemicals, pharmaceuticals, pulp and paper, food processing, oil and gas, and wastewater treatment. Their versatility and corrosion resistance make them an ideal choice for systems that demand long service life and minimal maintenance.

Sandvik, a trusted name among Stainless Steel 317/317L Flanges Exporters, offers a comprehensive range of flange types to meet specific application requirements:

Weld Neck Flanges: Ideal for high-pressure applications and aggressive environments. The long tapered hub ensures excellent stress distribution.

Slip-On Flanges: Easy to install and weld, suitable for low-pressure, non-critical systems.

Blind Flanges: Used to seal pipe ends, tanks, and valves. Provides access for maintenance and inspection.

Socket Weld Flanges: Suitable for small-diameter, high-pressure pipelines. Provides a strong and leak-proof connection.

Threaded Flanges: Used in low-pressure piping where welding is not an option.

Lap Joint Flanges: Paired with a stub end, commonly used in systems that require frequent dismantling.

Specification of Stainless Steel 317/317L Flanges

Stainless Steel Flanges Specification : ASTM A182 / ASME SA182
Dimension Standard : ANSI/ASME B16.5, B 16.47 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" (1200NB)
Class / Pressure : 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Flange Face Type : Flate 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, BS 4504 PN 10, BS4504 PN 16, BS4504 PN 25, BS4504 PN 40, BS 4504 PN 64, BS 4504 PN 100, BS 4504 PN 160, BS 4504 PN 250, BS 10, BS Table D, BS Table E, BS Table F, BS Table H.

Equivalent Grades of Stainless Steel 317/317L Flanges

STANDARD UNS WNR. JIS EN
SS 317 S31700 1.4449 SUS 317 -
SS 317L S31703 1.4438 SUS 317L X2CrNiMo18-15-4

Chemical Composition of Stainless Steel 317/317L Flanges

Grade C Mn Si P S Cr Mo Ni N
317 0.08 max 2 max 1 max 0.040 max 0.03 max 18 – 20 3 – 4 11 – 14 -
317L 0.035 max 2 max 1 max 0.040 max 0.03 max 18 – 20 3 – 4 11 – 15 -

Mechanical Properties of Stainless Steel 317/317L Flanges

Density 8.0 g/cm3
Melting Point 1454 °C (2650 °F)
Tensile Strength Psi – 75000 , MPa – 515
Yield Strength (0.2%Offset) Psi – 30000 , MPa – 205
Elongation 35 %