Midland, UK-based Weston Stainless is a reliable source of high-strength stainless steel products, offering long-lasting and dependable solutions for a wide range of industrial uses. Their Stainless Steel 347 Flanges are produced from columbium-stabilized austenitic stainless steel, providing superior resistance to intergranular corrosion, oxidation, and high-temperature conditions. These flanges are of different types, such as slip-on, weld neck, blind, socket weld, and threaded flanges, that offer safe connections to piping systems. With greater mechanical strength, weldability, and resistance to carbide precipitation, SS 347 flanges find applications where there is a need for strength, durability, and corrosion resistance.
Stainless Steel 347 Flanges contain 17-19% chromium, 9-13% nickel, and columbium (niobium), which increases their resistance to carbide precipitation and oxidation at high temperatures. They possess a tensile strength of 515 MPa, yield strength of 205 MPa, and elongation of 40%. Their hardness is around 95 HRB. Physical properties consist of a density of 7.9 g/cm³, melting point of 1400°C, and thermal conductivity of 16.3 W/m-K to provide long-term durability, superior corrosion resistance, and extended performance under harsh industrial environments.
| Standard | ASTM A182 / ASME SA182 |
| Dimensions | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN |
| Standard | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges |
| Size | 1/2″ (15 NB) to 48″ (1200NB) |
| Class/Pressure | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 |
| Flange Face Type | Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
| Grade | C | Mn | Si | P | S | Cr | Cb | Ni | Fe |
| 347 | 0.08 | 2.0 | 1.0 | 0.045 | 0.030 | 17.00 – 20.00 | 10xC – 1.10 | 9.00 – 13.00 | 62.74 min |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 347 | 515 | 205 | 35 | 92 | 201 |
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Manufactured from stainless steel alloy 347, ensure secure pipe connections with enhanced corrosion resistance and high-temperature strength, suitable for high-pressure systems in various industries.
Constructed from stainless steel alloy 347, provide leak-proof connections with excellent corrosion resistance and high-temperature performance, ideal for high-pressure and critical service applications.
Superior strength, excellent corrosion resistance, and high-temperature endurance, making them ideal for demanding industrial applications and high-pressure environments.
Stainless Steel 347 Flanges find extensive applications in petrochemical, power generation, aerospace, and marine industries. Their high oxidation and corrosion resistance qualify them for high-temperature use in applications like heat exchangers, boilers, refinery piping, and exhaust systems. The flanges also find applications in pressure vessels, food processing equipment, and chemical processing plants where exposure to aggressive chemicals and high temperatures is frequent. Their superior mechanical strength and thermal stress resistance render them a highly favored option for connecting and holding together piping systems within harsh industrial environments.
Weston Stainless offers test certificates, such as Mill Test Certificates (MTC) according to EN 10204 3.1, that meet international standards of quality. The flanges are carefully packaged in wooden crates, bubble wrap, or carton boxes for protection during transit. With its effective logistics system, Weston Stainless ensures timely and reliable global delivery, fulfilling industrial requirements with accuracy and care.
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