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Home > Stainless Steel > Stainless Steel 321 and 321H Welded Tubing
Irfan Pipes and Tubes, based in Istanbul, Turkey, has built a solid reputation as a manufacturer and supplier of top-notch stainless steel tubing solutions tailored for critical industrial applications. They specialize in Stainless Steel 321 and 321H Welded Tubing, which are celebrated for their remarkable resistance to high-temperature oxidation and intergranular corrosion. These titanium-stabilized grades are perfect for situations where materials are continuously exposed to elevated temperatures. Irfan Pipes and Tubes is dedicated to providing reliable, durable, and internationally certified products for industries like chemical processing, aerospace, and power generation. With prompt deliveries and expert support, they’ve become a trusted name in stainless steel supply.
When it comes to the composition and mechanical properties of Stainless Steel 321/321H Welded Tubing, 321 is an austenitic stainless steel that contains 17–19% Chromium, 9–12% Nickel, and Titanium (at least five times the carbon content) to prevent carbide precipitation. The 321H variant, which has a higher carbon content (0.04–0.10% Carbon), offers enhanced strength at high temperatures. Both grades boast a tensile strength of at least 515 MPa, a yield strength of at least 205 MPa, and an elongation of 35–40%. They also show excellent oxidation resistance up to 900°C and possess good creep and stress rupture properties, making them ideal for extended use in high-temperature and pressure environments, especially after welding.
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.
Choose Stainless Steel 321 and 321H Welded Tubing from Irfan Pipes and Tubes for exceptional corrosion resistance, superior strength and excellent durability. Ideal for a variety of industrial applications it provides outstanding performance in harsh environments. With precision manufacturing and quality assurance, we ensure reliable and durable tubing solutions.
Irfan Pipes and Tubes is the largest supplier of Stainless Steel 317 and 317L Welded Tubing in Istanbul, Turkey. 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 |
Yes, Irfan Pipes and Tubes offer large custom designs for Stainless Steel 321 and 321H Welded Tubing. With design, wall thickness and length. Their adjustable options ensure the tubing meets specific application requirements. This flexibility makes it more efficient and reliable for different industries and environments. For more details, contact us at sales@irfanpipes.com.
Stainless Steel 321 and 321H Welded Tubing find extensive use in high-temperature and welded applications, thanks to their resistance to intergranular corrosion and thermal fatigue. You’ll often see them in exhaust systems, heat exchangers, furnace components, pressure vessels, and boiler tubes across chemical processing plants, aerospace, and power generation sectors. The 321H variant is particularly favored for high-pressure and high-temperature settings, such as refinery heaters, superheaters, and nuclear applications.
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