Home > Forged Fittings > Stainless Steel 321/321H Forged Fittings
Aditya Stainless is a well-respected manufacturer and supplier of top-notch Stainless Steel 321/321H Forged Fittings based in Kolkata, India. With years of experience and cutting-edge manufacturing facilities, we focus on crafting high-performance SS 321 and SS 321H forged fittings that adhere to international quality standards. Our diverse product lineup includes socket welds, threaded fittings, elbows, tees, couplings, and more, all designed for exceptional strength and durability. Renowned for their outstanding resistance to high-temperature oxidation and scaling, these forged fittings are perfect for demanding industrial applications. Aditya Stainless is your go-to partner for SS 321/321H Forged Fittings, serving both Indian and international markets.
Stainless Steel 321/321H Forged Fittings are titanium-stabilized austenitic stainless steels, featuring 17-19% Chromium, 9-12% Nickel, and Titanium ≥ 5x(C+N)% to enhance resistance to intergranular corrosion. SS 321H has a higher carbon content, which boosts its high-temperature strength. The mechanical properties include a minimum tensile strength of 515 MPa, yield strength of 205 MPa, and an elongation of 40%. With a density of 7.90 g/cm³, these fittings can withstand temperatures up to 870°C for SS 321 and 1010°C for SS 321H, making them ideal for high-temperature and pressure environments.
Specifications ASTM A182 & ASME SA182
Standard ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799
Size 1/8” NB to 4” NB (Socketweld & Screwed-Threaded)
Class 2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS
Type Socketweld Fittings, Screwed-Threaded Fittings
Forged Fittings Items : 45 Deg Elbow, 90 Deg Elbow, Forged Tee, Union, Full Coupling, Half Coupling, Cross, Cap, Swage Nipple, Plug, Bush, Welding Boss, Hexagonal Nipple etc.
Type Socketweld Fittings, Screwed-Threaded Fittings
Grade 321 / 321H UNS (S32100, S32109), DIN (1.4541, 1.4878)
| Grade | C | Mn | Si | P | S | Cr | N | Ni | Ti |
| SS 321 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 0.10 max | 9.00 – 12.00 | 5(C+N) – 0.70 max |
| 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 % |
Contact us to get a quick quote for your requirement.
At Aditya Stainless, each stainless steel 321/321H forged fitting undergoes rigorous testing for excellent quality and performance. Our products are certified to meet international standards, including ISO and ASTM. Tests include material authentication, water testing and non-destructive analysis to ensure durability, reliability and compliance for critical industrial applications around the world.
These fittings, available in sizes from 1/8″ to 4″, are designed for high-pressure applications with socket weld connections. They offer excellent resistance to oxidation and corrosion due to their high chromium and nickel content. Ideal for elevated temperature environments.
Threaded fittings in 321 stainless steel come in sizes ranging from 1/8″ to 6″. They provide superior resistance to intergranular corrosion, making them suitable for high-temperature and pressure applications. The threaded design ensures a secure, leak-proof connection.
This 45-degree elbow, available from 1/2″ to 4″, is used to change the direction of piping. It maintains high corrosion resistance and strength under elevated temperatures, making it suitable for critical, high-stress applications.
The threaded tee, with sizes from 1/8″ to 6″, allows for branch connections at a 90-degree angle. It is designed for high resistance to heat and corrosive environments, ensuring reliability and durability in demanding conditions.
Available in sizes ranging from 1/8″ to 4″, this half coupling provides a secure connection between two pipes. It is crafted to withstand oxidation and corrosion, making it ideal for high-temperature applications.
The socket weld cross, available from 1/2″ to 4″, connects four pipes at right angles. It features high resistance to thermal and chemical stresses, ensuring long-lasting performance in extreme conditions.
Stainless Steel 321/321H Forged Fittings find extensive use in various industries, including oil & gas, petrochemicals, refineries, power plants, food processing, and heat exchangers. Their remarkable high-temperature strength and oxidation resistance make them perfect for applications like exhaust manifolds, furnace components, and thermal processing equipment. In Kolkata, they are the preferred choice for piping systems that experience frequent temperature changes and corrosive conditions. Additionally, SS 321/321H forged fittings are utilized in aircraft exhaust stacks, chemical processing plants, and marine environments, providing a dependable solution for critical connections under high stress.
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