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Home > Stainless Steel > Stainless Steel 321/321H Heat Exchanger Tubing
Impex Tube India, based in Mumbai, is a well-known manufacturer and supplier of high-quality pipes and tubes, providing diverse stainless steel solutions. One of its high-end products is Stainless Steel 321/321H Heat Exchanger Tubing, specifically developed for corrosive and high-temperature conditions. The tubes are recognized for their superior thermal stability, oxidation resistance, and mechanical properties. Impex Tube India blends state-of-the-art manufacturing techniques with rigorous quality control to produce products of international standard, catering to a wide variety of industries in India and internationally with reliability and accuracy.
Stainless Steel 321/321H Heat Exchanger Tubing is a chromium (17–19%), nickel (9–12%), and titanium (at least five times the carbon content) containing titanium-stabilized austenitic stainless steel for improved resistance to intergranular corrosion. 321H is the high-carbon variant, which offers improved strength at higher temperatures. These tubes provide a tensile strength of about 515 MPa, yield strength of about 205 MPa, and elongation of about 35%. Their superior creep properties, weldability, and hot mechanical properties suit them well for thermal applications with long exposure to heat and pressure.
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 Impex Tube India 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 Impex Tube India for superior stainless steel products that enhance efficiency and longevity in heat exchange systems.
Impex Tube India, one of the largest suppliers of Stainless Steel 321/321H Heat Exchanger Tubing in Mumbai, 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.
Yes, we offer custom sizes for Stainless Steel 321/321H Heat Exchanger Tubing to meet your specific requirements. Our team at Impex Tube India is committed to providing tailored solutions for all your Piping & tubing needs. For more details, contact us at sales@impextubeind.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 finds vast usage in high heat, pressure, and corrosive media applications. These are used extensively in heat exchangers, condensers, boilers, and superheaters in chemical processing, power generation, and oil and gas industries. The titanium stabilization avoids carbide precipitation when the assembly is welded, making them suitable for welded assemblies under high-temperature exposure. 321H’s increased carbon content provides improved performance in continuous high-temperature service, including use in aerospace exhaust components and furnace parts. The tubes are also ideal for food processing, refinery duty, and marine applications, where heat resistance and stability are critical.
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