Home > Forged Fittings > Stainless Steel 321/321H Forged Fittings
Ranya Stainless, a reliable manufacturer and supplier based in Muscat, Oman, is committed to delivering premium-quality stainless steel solutions tailored for tough industrial conditions. Among its diverse product range, Stainless Steel 321/321H Forged Fittings are valued for their excellent heat resistance, corrosion protection, and long-lasting performance. Produced through advanced forging processes, these fittings provide exceptional strength, dimensional precision, and durability. Ranya Stainless ensures each fitting meets strict international standards, offering customers dependable solutions for high-temperature environments. With a strong focus on quality and customer satisfaction, the company is a trusted choice for industries requiring robust and thermally stable forged fittings.
Stainless Steel 321/321H Forged Fittings are titanium-stabilized austenitic stainless steels containing 17–19% chromium, 9–12% nickel, and added titanium for improved resistance to carbide precipitation. Grade 321H features a higher carbon content, enhancing strength at elevated temperatures and providing superior creep resistance. These fittings exhibit strong tensile and yield strength, good ductility, and excellent thermal stability. Their resistance to intergranular corrosion and oxidation makes them ideal for applications involving continuous or intermittent heating. The combination of toughness and heat resistance ensures reliable performance in demanding operating conditions.
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 Ranya 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 are widely used in industries where high-temperature stability and corrosion resistance are essential. They are commonly employed in thermal processing equipment, boilers, heat exchangers, refinery units, and exhaust systems. Power generation plants rely on them for components exposed to continuous heating cycles, while chemical and petrochemical sectors use them for piping systems handling hot acids, steam, and other aggressive media. Their stability and resistance to chromium carbide formation also make them suitable for aerospace components, food processing equipment, and pharmaceutical systems. These fittings offer long-term reliability in harsh, heat-intensive environments.
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