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Home > Stainless Steel > Stainless Steel 321/321H Seamless Tubing
Liam Pipes and Tubes stands out as a reliable manufacturer and supplier of top-notch Stainless Steel 321/321H Seamless Tubing right in Houston, USA. With a strong focus on quality and precision, Liam delivers tubing solutions that are designed for outstanding performance in tough industries. Their Stainless Steel 321/321H tubing is crafted to meet international standards, guaranteeing impressive durability, resistance to high temperatures, and remarkable corrosion resistance. Supported by a solid distribution network and knowledgeable technical assistance, Liam Pipes and Tubes serves a variety of sectors, including petrochemical, aerospace, and power generation, making them a go-to partner for dependable stainless steel tubing needs throughout the USA.
When it comes to composition, Stainless Steel 321/321H Seamless Tubing mainly consists of iron, chromium (17–19%), and nickel (9–12%), with titanium included to prevent chromium carbide precipitation. The “H” version, 321H, has a higher carbon content (0.04–0.10%) that enhances its strength at elevated temperatures. These grades boast excellent oxidation resistance up to 900°C and good creep strength. The tubing features a tensile strength of about 515 MPa, a yield strength of 205 MPa, and an elongation of 40%, making it suitable for both low and high-pressure applications in high-temperature settings.
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 Liam 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 Liam for superior stainless steel tubing that enhances the safety and efficiency of your operations.
Liam Pipes and Tubes, one of the largest suppliers of Stainless Steel 321/321H Seamless Tubing in Houston , USA, 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 Liam Pipes and Tubes is committed to providing tailored solutions for all your Piping & tubing needs. For more details, contact us at sales@liampipes.us.
| 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 |
Stainless Steel 321/321H Seamless Tubing is extensively utilized in industries where high-temperature and corrosion resistance are essential. It’s perfect for exhaust systems, heat exchangers, furnace components, and chemical processing equipment. In the aerospace sector, these tubes are employed in jet engine parts and afterburners because of their stability at high temperatures. In the petrochemical and refinery industries, 321/321H tubing excels under cyclic heating conditions. Its seamless design ensures consistent performance in high-pressure and high-stress situations, making it a trustworthy choice for demanding industrial applications.
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