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Home > Stainless Steel > Stainless Steel 321/321H Heat Exchanger Tubing
Bulan Pipes and Tubes is a reputable manufacturer and supplier located in Jakarta, Indonesia, specializing in high-quality Stainless Steel 321 and 321H Heat Exchanger Tubing. These tubes are designed for exceptional performance in high-temperature and corrosive environments. They meet ASTM A213 and ASTM A249 standards and are made from stabilized austenitic stainless steels that include titanium to prevent intergranular corrosion and sensitization during welding and thermal cycling. The 321H grade has a higher carbon content, which enhances its creep resistance. Available in various sizes, wall thicknesses, and surface finishes, these tubes are commonly used in the petrochemical, refinery, power generation, and thermal processing industries for dependable, long-lasting heat transfer.
Stainless Steel 321/321H Heat Exchanger Tubing typically contains around 17–20% chromium, 9–13% nickel, and titanium (at least five times the carbon content) for stabilization. The 321H grade has a higher carbon content (approximately 0.04–0.10%) to improve creep strength at temperatures above 537 °C (1000 °F). The typical tensile strength ranges from 515 to 750 MPa, with a yield strength of about 205 MPa. These alloys are known for their excellent resistance to oxidation and polythionic acid stress corrosion cracking. Their stabilized microstructure guarantees reliable mechanical properties, good ductility, and weldability during continuous high-temperature service and thermal cycling.
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 Bulan 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 Bulan Pipes and Tubes for superior stainless steel products that enhance efficiency and longevity in heat exchange systems.
Bulan Pipes and Tubes, one of the largest suppliers of Stainless Steel 321/321H Heat Exchanger Tubing in Indonesia, Jakarta, 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 Bulan Pipes and Tubes is committed to providing tailored solutions for all your Piping & tubing needs. For more details, contact us at sales@bulanpipes.id.
| 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 and 321H Heat Exchanger Tubing is extensively utilized in applications where reliable performance at high temperatures is essential. In refineries and petrochemical plants, you’ll find these tubes in heat exchangers, process heaters, and reformer coils that are exposed to hot corrosive gases. Power generation facilities use them in superheaters and boiler heat exchangers. The chemical processing industry relies on these tubes for acid processing and handling high-temperature fluids. Additionally, the aerospace and thermal processing sectors employ 321/321H tubing for exhaust systems and heat recovery equipment, thanks to their outstanding oxidation resistance.
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