- sales@rithavpipesandtubes.co.in
- Delhi, India
Home > Stainless Steel > Stainless Steel 321 and 321H Instrumentation Tubing
Rithav Pipes and Tubes, based in Delhi, India, is a reliable producer and exporter of Stainless Steel 321 and 321H Instrumentation Tubing. Renowned for superior quality products, we provide heat–stable and corrosion–resistant tubing suitable for critical instrumentation in stringent industries. Our tubing conforms to strict international standards and is suitable for applications in aerospace, oil and gas, power generation, and chemical processing. With an eye on consistency, innovation, and customer satisfaction, Rithav provides customized solutions to cater to varied industrial needs. Rely on us for high-quality, high-performance tubing engineered to operate in severe conditions.
Stainless Steel 321 and 321H Instrumentation Tubing contains 18–20% chromium and 9–12% nickel, along with titanium to avoid precipitation of carbides during welding. 321H contains higher carbon content, which improves creep strength at elevated temperatures. The alloys provide tensile strength up to 750 MPa, with high ductility, weldability, and thermal stability. Their high resistance to oxidation, intergranular corrosion, and acidic environments makes them well-suited for high-temperature applications. The tubing retains structural integrity with thermal stress, ensuring durability and reliability in demanding instrumentation usage.
| Grade | Range | Ni | Cr | P | Fe | C | Mn | N | Si | S | Ti |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 321 | Min. | 9.0 | 17.0 | 0 | 65.045 | – | – | – | – | – | – |
| Max. | 12.0 | 19.0 | 0.045 | – | 0.08 | 2.0 | 0.10 | 1.0 | 0.030 | 5(C+N) -0.70 | |
| 321H | Min. | 9.0 | 17.0 | – | 65.25 | 0.04 | – | – | – | – | – |
| Max. | 12.0 | 19.0 | 0.045 | 0.010 | 2.00 | 0.10 | 1.00 | 0.030 | 4(C+N) -0.70 |
| Grade | Tensile Strength min (MPa) | Yield Strength 0.2% Proof min (MPa) | Hardness | Elongation (% in 50mm) min | |
|---|---|---|---|---|---|
| Brinell max (HB) | Rockwell B max (HR B) | ||||
| 321/321h | 515 | 205 | 217 | 95 | 40% |
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 and 321H Instrumentation Tubing from Rithav Pipes and Tubes ensures high quality and durability, as these pipes offer excellent corrosion resistance and strength. Our commitment to exceptional service and reliable delivery guarantees customer satisfaction across various industrial applications. Our expertise in stainless steel products ensures you receive a top-tier solution tailored to your needs.
Rithav Pipes and Tubes, one of the largest suppliers of Stainless Steel 321 and 321H Instrumentation Tubing in Delhi, India, 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.
| Grade | UNS No | Old British | Euronorm | Japanese JIS | Swedish SS | GOST | ||
|---|---|---|---|---|---|---|---|---|
| BS | En | No | Name | |||||
| 321 | S32100 | 321S31 | X6CrNiTi18-10 | 1.4541 | – | SUS 321 | 2337 | – |
| 321h | S32109 | 321S51 | X10CrNiTi18-10 | 1.4878 | – | SUS 321h | – | – |
Yes, we offer custom sizes for Stainless Steel 321 and 321H Instrumentation Tubing to meet your specific requirements. Our team at Rithav Pipes and Tubes is committed to providing tailored solutions for all your Piping & tubing needs. For more details, contact us at sales@rithavpipesandtubes.co.in.
Stainless Steel 321/321H Instrumentation Tubing is widely applied in precision, high-temperature, and corrosion-resistance-critical industries. Typical applications include aerospace components, oil and gas piping systems, medical devices, and power generation equipment. It is also used in automotive exhaust systems, nuclear power plants, and heat exchangers, where it resists corrosive chemicals and thermal stress. The tubing proves ideal for precise fluid flow control, pressure measurement, and instrument connections in corrosive conditions. Its resistance to extreme heat and stress makes it a reliable option for instrumentation in chemical plants, refineries, and energy systems.
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