Ojas Pipes and Tubes, a reputable manufacturer and supplier located in Kolkata, India, is dedicated to providing top-notch Stainless Steel 321 Hex Bars and Rods for a variety of industrial applications. These bars are crafted from high-quality raw materials and cutting-edge processing techniques, guaranteeing exceptional strength, stability, and resistance to oxidation even at high temperatures. Stainless Steel 321 is a titanium-stabilized austenitic alloy that offers improved protection against intergranular corrosion. Ojas is known for its reliable product performance, precise finishing, and prompt delivery, making them a go-to choice for stainless steel hexagonal bar solutions both in India and abroad.
Stainless Steel 321 Hex Bars and Rods are composed of chromium (17–19%), nickel (9–12%), and titanium (at least five times the carbon content), with a low carbon content (maximum 0.08%). This composition helps stabilize the alloy against chromium carbide formation during welding. The material boasts a tensile strength of around 515 MPa, yield strength of about 205 MPa, and impressive elongation of approximately 40%. It also exhibits high creep strength and maintains its structural integrity at temperatures up to 870°C. In its annealed state, it is non-magnetic and offers excellent mechanical properties, weldability, and oxidation resistance in high-temperature environments.
Dimensions : ASTM, ASME
Standard : ASTM / ASME SA A276, A479, ASTM A493
Length : Random, Fix & Cut Length
Size : 20MM to 150MM
| Element | C | Cr | Mn | Ni | P | S | Si |
| SS 321 | 0.08 max. | 17.0 – 19.0 | 2.00 max. | 9.0-12.0 | 0.045 max. | 0.03 max. | 0.75 max. |
| Element | Density | Melting Range,℃ | Tensile Strength | Yield Strength | Elongation | Hardness (Brinell) |
| SS 321 | 8 | 1454 ℃ | 515 | 205 | 40 | 217 |
| HEXAGONS | ||
|---|---|---|
| Size(mm) | WT PER FEET IN KGS | WT PER MTR IN KGS |
| 16 | 0.55 | 1.79 |
| 18 | 0.69 | 2.27 |
| 20 | 0.85 | 2.80 |
| 22 | 1.03 | 3.39 |
| 25 | 1.33 | 4.38 |
| 28 | 1.67 | 5.49 |
| 30 | 1.92 | 6.30 |
| 32 | 2.19 | 7.17 |
| 36 | 2.77 | 9.07 |
| 38 | 3.08 | 10.11 |
| 40 | 3.41 | 11.20 |
| 45 | 4.32 | 14.18 |
| 50 | 5.34 | 17.50 |
| 56 | – | – |
| 60 | – | – |
| 65 | – | – |
| 70 | – | – |
| 75 | – | – |
| 80 | – | – |
| 90 | – | – |
| 100 | – | – |
SS 321 hex bars/rods are highly suitable for high-temperature applications due to their excellent resistance to oxidation and scaling, particularly in environments above 900°C. The addition of titanium stabilizes the material, preventing carbide precipitation, and enhancing its resistance to intergranular corrosion, making it ideal for aerospace and industrial applications.
SS 321 hex bars/rods are commonly used in industries requiring high-temperature resistance, such as aerospace, chemical processing, and power generation. Applications include exhaust systems, heat exchangers, furnace components, and reactors. Their resistance to corrosion, oxidation, and scaling makes them ideal for environments with elevated temperatures and aggressive conditions.
SS 321 hex bars/rods can be welded easily, but special care is needed to prevent carbide precipitation. Preheating and post-weld heat treatment are recommended to avoid weld embrittlement. Using titanium-stabilized filler metals helps maintain the alloy’s resistance to intergranular corrosion, ensuring weld integrity in high-temperature applications.
Stainless Steel 321 Hex Bars and Rods are perfect for high-temperature and corrosive environments, making them suitable for applications like aircraft exhaust manifolds, thermal processing equipment, chemical plant machinery, and furnace components. Their outstanding resistance to intergranular corrosion and oxidation makes them ideal for refinery operations, welded pressure vessels, pharmaceutical manufacturing, and food processing industries. The hexagonal shape not only enhances grip but also provides structural reinforcement, making them commonly used in fasteners, shafts, machine tools, and automotive components. Their strong performance under thermal stress ensures they remain reliable and durable in demanding operational conditions.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Rupal Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Delhi, India
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