Dhruv Metals is a reputable manufacturer and supplier of Stainless Steel 321H Flat Bars, proudly based in Hyderabad, India. They’ve built a solid reputation for providing high-performance stainless steel products that serve a variety of industrial sectors, such as petrochemicals, power plants, and thermal processing industries. Their SS 321H Flat Bars are crafted to meet exacting standards, ensuring outstanding durability, heat resistance, and weldability. With a strong commitment to quality and customer satisfaction, Dhruv Metals offers flat bars in a range of sizes and finishes, guaranteeing prompt delivery and competitive pricing for both domestic and international projects.
Stainless Steel 321H is a high-carbon variant of SS 321, stabilized with titanium. It generally contains 17–19% chromium, 9–12% nickel, and a carbon content of up to 0.10%, which boosts its strength at high temperatures. The alloy also has trace amounts of manganese, silicon, and phosphorus. SS 321H is known for its excellent resistance to oxidation and intergranular corrosion within the 427–816°C range. It boasts a minimum tensile strength of 515 MPa, a yield strength of 205 MPa, and an elongation of about 40%, making it a great choice for pressure and structural applications in high-temperature settings.
Dimensions : ASTM, ASME
Standard : ASTM / ASME SA A582, A276, A564, ASTM A484, 484M
Surface : hrap, hot rolled pickled or sand blasting finished, cold drawn, polished, hairline
Range : Range – 3.17mm to 350mm dia
| SS 321H | 0.04 – 0.10 | 17.0 – 19.0 | 2.00 max. | 9.0-12.0 | 0.045 max. | 0.03 max. | 0.75 max. |
| Element | C | Cr | Mn | Ni | P | S | Si |
| SS 321H | 0.08 max. | 17.0 – 19.0 | 2.00 max. | 9.0-12.0 | 0.045 max. | 0.03 max. | 0.75 max. |
| STANDARD | WERKSTOFF NR. | UNS |
| SS 321H | 1.4438 | S32109 |
The primary alloying element in Stainless Steel 321H is titanium (Ti), which stabilizes the steel and prevents carbide precipitation during welding. It also contains chromium (Cr) for corrosion resistance and higher carbon content for increased strength at elevated temperatures.
Stainless Steel 321H is most suitable for high-temperature applications in the range of 427°C to 816°C (800°F to 1500°F). It offers excellent oxidation resistance and stability in these temperatures, making it ideal for heat exchangers and furnace components.
Typical dimensions of a Stainless Steel 321H flat bar range from 3mm to 150mm thickness, 25mm to 600mm width, and up to 6 meters in length. These dimensions vary based on manufacturer specifications and customer requirements.
Stainless Steel 321H Flat Bars are commonly used in high-temperature and pressure applications thanks to their remarkable heat resistance and mechanical properties. In the petrochemical and refinery sectors, they’re utilized for furnace components, heat exchangers, and manifolds. Power plants make use of them in superheaters and boilers, while the chemical industry counts on their oxidation resistance in processing equipment. You’ll also find them in aerospace exhaust systems, expansion joints, and food processing applications that demand high cleanliness and durability. Plus, SS 321H Flat Bars are perfect for welded structures and pressure vessels that operate under extreme thermal conditions.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Dhruv Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Hyderabad , India
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