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Home > Stainless Steel > Stainless Steel 321 and 321H Welded Tubing
Iris Pipes and Tubes, located in Cairo, Egypt, stands out as a top manufacturer and supplier of **Stainless Steel 321 and 321H Welded Tubing**. They provide high-quality solutions tailored for a variety of industrial needs. The company prides itself on precision manufacturing, exceptional product performance, and strict adherence to international quality standards. These specific tubing grades are crafted for high-temperature and corrosive environments, ensuring remarkable durability and resistance to oxidation. With a focus on efficient service, timely delivery, and customer-centric solutions, Iris Pipes and Tubes has made a significant mark in sectors like petrochemical, power generation, construction, and food processing.
Stainless steel 321 and 321H welded tubing is composed of 17-19% chromium, 9-12% nickel, and 0.5-1.0% titanium, providing excellent resistance to intergranular corrosion and carbide precipitation. With 515 MPa tensile strength and 205 MPa yield strength in excess areas with high temperatures. The excellent oxidation resistance of this alloy, together with its high strength and weldability, makes it ideal for complex applications in aerospace, chemical engineering and energy generation, and ensures a reliable and durable under extreme conditions.
Welded Tubes Size : 1 / 8″ NB – 24″ NB
Specifications : ASTM A/ASME SA213, A249, A269, A312, A358
Standard : ASTM, ASME and API
Length : Single Random, Double Random & Required Length
Outer Diameter : 6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB
Thickness : 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Schedule : SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Types : Welded
Form : Round Tubes, Square Tubes, Rectangular Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes
End : Plain End, Beveled End, Treaded
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Fe |
| 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 % |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
**Stainless Steel 321 and 321H Welded Tubing** are titanium-stabilized austenitic stainless steels, featuring around 17–19% chromium, 9–12% nickel, and small amounts of titanium to boost resistance against intergranular corrosion. The 321H variant has a higher carbon content, which enhances its creep strength and performance at elevated temperatures. Both grades showcase impressive tensile and yield strength, good ductility, and excellent oxidation resistance up to 900°C. Their unique chemical makeup guarantees outstanding mechanical stability, weldability, and formability, making them perfect for demanding applications that involve heat and stress.
Iris Pipes and Tubes is the largest supplier of Stainless Steel 317 and 317L Welded Tubing in Alexandria, Egypt. Known for its high-quality products. We offer superior corrosion resistance, strength, and durability. Trusted by industries worldwide they provide reliable precision-engineered tubing for various applications and project needs.
| STANDARD | WERKSTOFF NR. | UNS | JIS | EN |
| SS 321 | 1.4541 | S32100 | SUS 321 | X6CrNiTi18-10 |
| SS 321H | 1.4878 | S32109 | SUS 321H | X12CrNiTi18-9 |
These **Stainless Steel 321 and 321H Welded Tubing** are extensively used in industries that require materials to withstand high temperatures and corrosive conditions. Typical applications include heat exchangers, boiler components, exhaust systems, and equipment for refinery and chemical processing, as well as aerospace parts. Their stability and resistance to oxidation make them ideal for furnace operations and high-temperature heating systems. Moreover, these welded tubes find their place in food and beverage processing, pharmaceutical production, and power plants, thanks to their cleanliness, reliability, and ability to maintain mechanical integrity under thermal stress.
Stainless steel 321 and 321H welded tubing is commonly used in high temperature applications requiring excellent corrosion and oxidation resistance It is widely used in the aerospace, chemical, petrochemical and electrical industries. This tube is ideal for use in heat exchangers, boilers, pressure vessels and exhaust systems due to its high temperature stability used in food processing and medical devices where high temperatures and corrosion resistance is essential for long-term reliable operation.
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