Shimizu Metals stands out as a reliable manufacturer and supplier based in Pulau Ujong, Singapore, specializing in top-notch stainless steel products that are built to withstand high temperatures and harsh environments. Our **Stainless Steel 347H Flanges** are crafted to offer outstanding resistance to intergranular corrosion and boast impressive mechanical strength, even when the heat is on. Thanks to the addition of niobium, these flanges effectively prevent carbide precipitation during welding and extended heat exposure, ensuring they deliver long-lasting performance and leak-proof connections in critical piping systems.
The Stainless Steel 347H Flanges are made up of 17–19% chromium, 9–13% nickel, 2–3% molybdenum, along with niobium stabilizers. This unique blend not only enhances their resistance to high-temperature corrosion but also prevents sensitization. Plus, they provide excellent tensile and yield strength, good toughness, and reliable creep resistance, making them perfect for elevated temperature applications.
| 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 |
| 347H | 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 | ||||
| 347H | 515 | 205 | 35 | 92 | 201 |
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SS 347Hsocket weld flanges, manufactured from stainless steel alloy 347H, ensure secure pipe connections with enhanced corrosion resistance and high-temperature strength, suitable for high-pressure systems in various industries.
SS 347H ring type joint flanges, constructed from stainless steel alloy 347H, provide leak-proof connections with excellent corrosion resistance and high-temperature performance, ideal for high-pressure and critical service applications.
SS 347H forged flanges, made from stainless steel alloy 347H, offer superior strength, excellent corrosion resistance, and high-temperature endurance, making them ideal for demanding industrial applications and high-pressure environments.
We conduct various rigorous tests, including dimensional, mechanical, and chemical analysis, to ensure the highest quality of our Stainless Steel 347H Flanges. Our in-house quality control team oversees all processes, complemented by third-party inspections to guarantee compliance with industry standards. With a commitment to prompt delivery we ensure that our clients receive their products on time, every time.
You’ll find Stainless Steel 347H Flanges in a variety of industries, including power generation, chemical processing, petrochemical plants, and marine sectors. They’re particularly suited for high-temperature piping systems, boilers, heat exchangers, condensers, and pressure vessels that come into contact with corrosive media. With their impressive mechanical strength, corrosion resistance, and durability, these flanges ensure secure and long-lasting connections in even the most demanding industrial settings.
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