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Home > Stainless Steel > Stainless Steel 321/321H Heat Exchanger Tubing
Laila Pipes is a reliable manufacturer and supplier of Stainless Steel 321/321H Heat Exchanger Tubing, located in Muscat, OMAN, providing high-performance tubing solutions for thermal and high-pressure services. Designed with superior resistance to heat and intergranular corrosion, Laila Pipes’ Stainless Steel 321/321H Heat Exchanger Tubing is best suited for applications in systems that are exposed to continuous high temperatures. Laila Pipes supplies vital industries like power generation, chemical processing, oil and gas, and aerospace with tubing that meets global standards and provides long-term performance under adverse service conditions.
Stainless Steel 321/321H Heat Exchanger Tubing is comprised of 17–19% chromium and 9–12% nickel titanium-stabilized austenitic stainless steel. Grade 321 has titanium to avoid carbide precipitation after welding, whereas 321H includes more carbon content (up to 0.10%) for improved creep and high-temperature strength. The tubes provide a tensile strength of 515–750 MPa and a yield strength of about 205 MPa. Both grades retain corrosion resistance and structural stability at temperatures of up to 870–900°C, with 321H being the choice where increased mechanical strength is necessary at high temperatures.
Range : 10 mm OD to 50.8 mm OD
Outer Diameter : 6.00 mm to 101.60 mm
Wall Thickness : 0.70 mm to 8.00 mm
Length : up to 20 m (65.62 ft) Length & Customed Required Length
Specifications : ASTM A 213, A 268, A 269, A 789, Equivalent to ASME, EN, JIS Etc.
| Element | SS 321 | SS 321H |
| C | 0.08 max | 0.04 – 0.10 |
| Mn | 2.0 max | 2.0 max |
| Si | 1.0 max | 1.0 max |
| P | 0.045 max | 0.045 max |
| S | 0.030 max | 0.030 max |
| Cr | 17.00 – 19.00 | 17.00 – 19.00 |
| N | 0.10 max | 0.10 max |
| Ni | 9.00 – 12.00 | 9.00 – 12.00 |
| Ti | 5(C+N) – 0.70 max | 4(C+N) – 0.70 max |
| Element | SS 321/321H |
| Density | 8.0 g/cm3 |
| Melting Point | 1457 °C (2650 °F) |
| Tensile Strength | Psi – 75000 , MPa – 515 |
| Yield Strength (0.2%Offset) | Psi – 30000 , MPa – 205 |
| Elongation | 35 % |
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 Heat Exchanger Tubing from Laila Pipes and Tubes ensures high quality and reliability for your industrial applications. Our tubing is manufactured using premium-grade materials, adhering to strict industry standards, which guarantees durability and performance. We offer customized solutions to meet specific requirements, backed by exceptional customer service and technical support. With our extensive inventory and prompt delivery, you can count on us for timely project execution. Trust Laila Pipes and Tubes for superior stainless steel products that enhance efficiency and longevity in heat exchange systems.
Laila Pipes and Tubes, one of the largest suppliers of Stainless Steel 321/321H Heat Exchanger Tubing in Muscat, OMAN, 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 Heat Exchanger Tubing to meet your specific requirements. Our team at Laila Pipes and Tubes is committed to providing tailored solutions for all your Piping & tubing needs. For more details, contact us at sales@lailapipes.com.
| STANDARD | WERKSTOFF NR. | UNS | JIS | EN |
| SS 321 | 1.4541 | S32100 | SUS 321 | X6CrNiTi18-10 |
| SS 321H | 1.4878 | S32109 | SUS 321H | X12CrNiTi18-9 |
Stainless Steel 321/321H Heat Exchanger Tubing is applied in superheaters, heat exchangers, boiler systems, refinery units, and exhaust gas treatment systems. It performs particularly well in thermal cycling applications as well as welded structures that are involved in continuous high-temperature service. The 321 stabilization of titanium does not cause sensitization, but the presence of more carbon in 321H enables higher performance in pressure-containing and high-heat services. These tubes offer a reliable and effective heat transfer solution for corrosive and high-temperature applications, guaranteeing reliability and longer service life.
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