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Home > Stainless Steel > Stainless Steel 321/321H Seamless Tubing
Irfan Pipes and Tubes, based in Istanbul, Turkey, stands out as a top manufacturer and supplier of Stainless Steel 321/321H Seamless Tubing. They specialize in providing high-quality tubing solutions tailored for industries that demand exceptional performance in high temperatures and resistance to corrosion. With state-of-the-art manufacturing facilities and a commitment to rigorous quality control, the company ensures that their seamless tubing is built to last, offering durability, reliability, and long-term service. This type of tubing is commonly utilized in sectors like chemical, petrochemical, power generation, and aerospace. Irfan Pipes and Tubes prides itself on timely deliveries and customer satisfaction, making them a trusted partner for industrial applications that face thermal and corrosive challenges.
Stainless Steel 321/321H Seamless Tubing is an austenitic stainless steel alloy that contains around 17–19% chromium, 9–13% nickel, and is stabilized with titanium. The 321H variant has a higher carbon content, which boosts its strength at elevated temperatures. These alloys are known for their excellent resistance to intergranular corrosion, oxidation, and scaling, especially under high-temperature conditions. They also boast high tensile strength, good toughness, and dimensional stability, all while maintaining ductility and formability. The titanium stabilization not only enhances weldability but also prevents sensitization during heating, making Stainless Steel 321/321H Seamless Tubing ideal for high-temperature, high-pressure, and corrosive industrial environments.
Tube Range : 6.35 mm OD To 101.6 mm OD Guage: 25 SWG – 10 SWG
Outer Diameter : 3.00 mm – 219.10 mm
Wall Thickness : 0.40 mm – 12.70 mm
Schedules : 5, 10S, 10, 30, 40S, 40, 80, 80S, XS, 160, XXH
Length : Upto 30 meters, Custom Cut Lengths
Specifications : ASTM A213 / ASTM SA213
Types : Round, Square, Rectangle, Coil, “U” Shape, Hydraulic & Honed Tubes
| SS | 321 | 321H |
| Ni | 09 – 12 | 09 – 12 |
| N | 0.10 | 0.10 |
| Cr | 17 – 19 | 17 – 19 |
| C | 0.08 max | 0.04 – 0.08 |
| Si | 1 max | 0.75 max |
| Mn | 2 max | 2 max |
| P | 0.040 max | 0.045 max |
| S | 0.030 max | 0.03 max |
| TI | 4(C+N) | 0.70 max |
| Grade | 321 | 321H |
| Tensile Strength (MPa) min | 515 | 515 |
| Yield Strength 0.2% Proof (MPa) min | 205 | 205 |
| Elongation (% in 50mm) min | 40 | 40 |
| Hardness | ||
| Rockwell B (HR B) max | 95 | 95 |
| Brinell (HB) max | 217 | 217 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Choosing Stainless Steel 321/321H Seamless Tubing from Irfan Pipes and Tubes guarantees you a high-performance product designed for challenging environments. Our tubing offers exceptional resistance to oxidation and intergranular corrosion, making it perfect for high-temperature applications in industries like aerospace, chemical processing, and petrochemical. With a focus on quality, we implement stringent testing and quality control measures to ensure durability and reliability. Our expert team provides tailored solutions to meet your specific needs, ensuring customer satisfaction. Trust Irfan for superior stainless steel tubing that enhances the safety and efficiency of your operations.
Irfan Pipes and Tubes, one of the largest suppliers of Stainless Steel 321/321H Seamless Tubing in Istanbul, Turkey, offers a comprehensive range of high-quality pipes and tubes suitable for various industrial applications. Their extensive inventory and commitment to exceptional service make them a go-to choice for stainless steel products in the region.
Yes, we offer custom sizes for Stainless Steel 321/321H Seamless Tubing to meet your specific requirements. Our team at Irfan Pipes and Tubes is committed to providing tailored solutions for all your Piping & tubing needs. For more details, contact us at sales@irfanpipes.com.
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
| BS | En | No | Name | ||||
| 321 | S32100 | 321S31 | 58B, 58C | 1.4541 | X6CrNiTi18-10 | 2337 | SUS 321 |
| 321H | S32109 | 321S51 | – | 1.4878 | X6CrNiTi18-10 | – | SUS 321H |
This seamless tubing is extensively used in industries that require corrosion resistance, high-temperature strength, and durability. In the chemical and petrochemical sectors, it finds applications in process tubing, heat exchangers, and reactors that are exposed to oxidizing and high-temperature media. The power generation industry employs it for boilers, superheaters, and furnace components. Meanwhile, the aerospace and marine sectors depend on 321/321H Seamless Tubing for exhaust systems, high-performance structural components, and other critical applications.
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