MERIH STAINLESS, based in Istanbul, Turkey, is a reputable manufacturer and supplier of Stainless Steel 321H Flanges, known for delivering top-notch products designed for high-temperature and corrosive settings. With a strong focus on advanced manufacturing techniques and compliance with international standards, the company provides flanges that guarantee strength, durability, and resistance to intergranular corrosion. Thanks to the stabilization with titanium and a higher carbon content, Stainless Steel 321H Flanges are perfect for demanding applications. MERIH STAINLESS has built a solid reputation for its dedication to quality, prompt delivery, and customer satisfaction, catering to industries like petrochemical, power generation, aerospace, and chemical processing with dependable flange solutions.
Stainless Steel 321H Flanges are a type of austenitic stainless steel that includes 17–19% chromium, 9–12% nickel, and titanium for stabilization. The “H” designation indicates a higher carbon content, which enhances creep strength and high-temperature performance. These flanges typically boast a tensile strength of around 515 MPa, a yield strength of 205 MPa, and impressive toughness, even when exposed to high temperatures for extended periods. They can resist oxidation up to 870°C, offer good weldability, and are resistant to intergranular corrosion, making them suitable for critical applications that demand both durability and stability in tough environments.
| Specifications | ASTM A182 / ASME SA182 |
| Size | 1/8″ NB TO 48″ NB |
| Standards | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
| Class / Pressure | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc. |
| Standard | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc. |
| Grades | S31803 / S32205 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61 |
| Grade | C | Mn | Si | P | S | Cr | N | Ni | Ti | SS 321H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 0.10 max | 9.00 – 12.00 | 4(C+N) – 0.70 max |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1457 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
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We offers the best quality Stainless Steel 321H Flanges Merih Stainless,which has undergone intense testing to produce top quality and performance. The flange is thoroughly tested for meeting international standards and specifications. Products supplied by us are certified by recognized authorities for traceability and reliability in each batch. With modern technology and strict quality control, we ensure durability, corrosion resistance, and good mechanical properties. Merih Stainless stands by the delivery of flanges with the highest level of industry standards in functionality and safety.
Stainless Steel 321H Threaded Flanges are available in sizes ranging from 1/2″ to 24″ and are designed for easy assembly without welding. They offer good resistance to oxidation and corrosion, making them suitable for various industrial applications.
SS 321H Socket Weld Flanges, ranging from 1/2″ to 24″ in size, are designed to fit inside a pipe for strong, reliable connections. They provide excellent resistance to high-temperature environments and corrosive substances.
Stainless Steel 321H Lap Joint Flanges are available in sizes from 1/2″ to 24″ and are used with a backing flange to allow for easy alignment and assembly. They offer high resistance to oxidation and corrosive elements, ideal for applications with frequent disassembly.
Stainless Steel 321H Flanges find extensive use in industries where high strength and resistance to heat and corrosion are crucial. They are often utilized in chemical processing equipment, petroleum refining units, and power generation systems, including boilers, superheaters, and heat exchangers. The aerospace and automotive sectors also rely on them for exhaust systems, manifolds, and thermal processing equipment. Additionally, they are used in high-pressure piping systems, furnace components, and in the food and pharmaceutical processing industries.
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