Anucha Metals, a well-respected manufacturer and supplier based in Bangkok, Thailand, specializes in providing top-notch Stainless Steel 321 Hex Bars and Rods that are built for high performance and reliability. With a strong focus on precision engineering and durability, Anucha Metals guarantees that these products adhere to international standards, catering to a variety of industrial needs. Stainless Steel 321, which is stabilized with titanium, is an austenitic stainless steel known for its remarkable resistance to intergranular corrosion, especially after being exposed to high temperatures. These hex bars and rods find extensive use in industries like chemical processing, power generation, petrochemical, and construction, ensuring long-lasting service.
The composition of Stainless Steel 321 Hex Bars and Rods primarily includes iron, along with 17–19% chromium, 9–12% nickel, and titanium for stabilization, which helps prevent carbide precipitation during welding or extended heating. They also contain trace amounts of manganese, silicon, carbon, phosphorus, and sulfur. These bars boast a tensile strength of around 515 MPa, a yield strength of 205 MPa, and an elongation of 40%, maintaining excellent toughness even at cryogenic temperatures. The addition of titanium enhances their mechanical properties at elevated temperatures, ensuring they remain strong, stable, and resistant to corrosion under thermal stress.
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 widely utilized in industries that demand exceptional heat and corrosion resistance. They are commonly found in the chemical and petrochemical sectors for piping systems, reactor vessels, and heat exchangers. In power plants, they are used in boiler tubes, superheaters, and high-temperature components. The aerospace and automotive industries rely on them for exhaust systems and engine parts, where strength and heat resistance are crucial. Additionally, construction and fabrication industries use these materials for structural supports, fasteners, and precision components. Their durability and resistance to scaling make Stainless Steel 321 Hex Bars and Rods a dependable choice for critical applications.






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Anucha Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Bangkok, Thailand
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