Neil Metals stands out as a top manufacturer and supplier of Stainless Steel 321 Square Bars and Rods, proudly based in Kolkata, India. They specialize in high-quality, titanium-stabilized stainless steel products designed for environments that face high temperatures and corrosion. Known for their impressive resistance to intergranular corrosion, SS 321 square bars and rods perform exceptionally well in oxidizing conditions. These products find their place in various industries, including aerospace, heat treatment, chemical processing, and power generation. With state-of-the-art production facilities and a commitment to precision and durability, Neil Metals guarantees timely delivery while meeting global standards for customers both domestically and internationally.
The composition of Stainless Steel 321 Square Bars and Rods includes 17–19% chromium and 9–12% nickel, with titanium (Ti ≥ 5x C%) added to prevent chromium carbide formation during welding or prolonged heat exposure. This stabilization significantly boosts the alloy’s resistance to intergranular corrosion. SS 321 boasts a tensile strength of around 515 MPa and a yield strength of about 205 MPa. It maintains excellent mechanical properties and oxidation resistance up to 870°C, along with good ductility and weldability, making it a perfect choice for high-temperature, welded applications.
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
Size : Tolerance: H8, H9, H10, H11, H12, H13K9, K10, K11, K12
| 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. |
| Grade | Tensile Str (MPa) min | Yield Str 0.2% Proof (MPa) min | Elong (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 321 | 515 | 205 | 40 | 95 | 217 |
| STANDARD | WERKSTOFF NR. | UNS |
| SS 321 | 1.4541 | S32100 |
| SQUARES | ||
|---|---|---|
| Size(mm) | WT PER FEET IN KGS | WT PER MTR IN KGS |
| 16 | 0.62 | 2.05 |
| 18 | 0.79 | 2.59 |
| 20 | 0.76 | 2.49 |
| 22 | 1.18 | 3.87 |
| 25 | 1.52 | 5.00 |
| 28 | 1.91 | 6.27 |
| 30 | 2.19 | 7.20 |
| 32 | 2.50 | 8.19 |
| 36 | 3.16 | 10.37 |
| 38 | 3.52 | 11.55 |
| 40 | 3.90 | 12.80 |
| 45 | 4.94 | 16.20 |
| 50 | 6.10 | 20.00 |
| 56 | 7.65 | 25.08 |
| 60 | – | – |
| 65 | – | – |
| 70 | – | – |
| 75 | – | – |
| 80 | – | – |
| 90 | – | – |
| 100 | – | – |
Stainless Steel 321 Square Bars are available in a range of sizes, typically from ¼" to 12" in width. Common finishes include mill finish, polished, and cold drawn.
Yes, Stainless Steel 321 Square Rods can be welded using most standard welding techniques. However, post-weld heat treatment may be required to maintain its properties and prevent sensitization.
Stainless Steel 321 Square Bars are generally non-magnetic in their annealed condition. However, they may exhibit slight magnetic properties if cold-worked.
These Stainless Steel 321 Square Bars and Rods are commonly used in structural and mechanical applications where heat and corrosion resistance are crucial. Typical applications include furnace components, heat exchangers, jet engine parts, pressure vessels, flue gas systems, and chemical processing equipment. The square shape enhances rigidity, making them ideal for fabricating machine frames, supports, shafts, and precision-engineered components. SS 321 is especially preferred in scenarios involving thermal cycling and welding, where long-term reliability and resistance to carbide precipitation are vital.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Neil Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Kolkata, India
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