Chung Metal offers long-lasting Stainless Steel 321 Hex Bars/Rods, a titanium-stabilized austenitic stainless steel well suited for service in high temperatures and welded constructions. SS 321 has superior resistance to intergranular corrosion and oxidation, particularly after welding. The hex profile facilitates better application of torque, optimum for mechanical and structural assemblies. Chung Metal produces 321 hex bars with superior surface finish, dimensional tolerance, and edge sharpness. Such rods are extensively utilized in thermal and chemical conditions demanding long-term strength, structural integrity, and heat or hostile medium resistance.
SS 321 has 17–19% chromium, 9–12% nickel, and is stabilized with titanium to prevent carbide formation upon welding. Carbon has ≤ 0.08% content. The alloy provides tensile strength of 500–700 MPa and yield strength of 200–300 MPa. Elongation is approximately 35–45%. It is non-magnetic, possesses high-temperature strength, and good weldability. The hexagonal shape provides accurate alignment in assembly and machining. SS 321 performs well up to 870°C, making it reliable for high-temperature welded components. Chung Metal offers rods in various sizes and conditions for industrial use.
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.
321 hex bars are used in heat exchangers, exhaust systems, expansion joints, manifolds, pressure vessels, and aerospace applications. They are ideal for welded piping and equipment in chemical plants, refineries, and thermal processing systems. The hex profile is conducive to safe mechanical fitment, particularly in torque mechanisms and bolted assemblies. It is preferred where welding is necessary, and intergranular corrosion needs to be eliminated. Chung Metal provides SS 321 hex rods for precision machining, structural stability, and resistance to corrosion in high-temperature industrial settings.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Chung Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Da Nang, Vietnam
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