Delhi-based Rupal Metals is a renowned manufacturer and supplier that delivers top-quality Stainless Steel 321 Square Bars/Rods. These bars are designed to suit every application in the different industries, providing remarkable strength, formability, and high-temperature oxidation resistance. With years of exposure to the business and dedication to precision, Rupal Metals takes utmost care to deliver products that meet very high quality standards. Their Stainless Steel 321 Square Bars/Rods find extensive applications across various industries, thus being the go-to option for customers looking for dependable and high-performance stainless steel products with on-time delivery and reasonable pricing.
Stainless Steel 321 Square Bars/Rods contain mostly chromium (17–19%) and nickel (9–12%) with the addition of titanium (up to 0.70%) that stabilizes the material against carbide precipitation. This austenitic stainless steel has a tensile strength of approximately 515 MPa and yield strength of 205 MPa, with high elongation and hardness. It maintains mechanical strength and corrosion resistance under high-temperature conditions and is therefore well suited for high-temperature service. Its intergranular corrosion resistance following welding also makes it a good choice for applications where post-weld annealing cannot be done.
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.
321 Square Bars/Rods made of Stainless Steel are comprehensively applied across industries such as aerospace, chemical processing, heat exchangers, and power generation. They are suitable for applications in high-temperature conditions, hence used in exhaust systems, furnace components, and expansion joints. In the food and pharmaceutical industries, they are prized because of their hygienic qualities and corrosion resistance. These rods are also used in the marine and petrochemical sectors because they are very strong and have resistance to scaling and oxidation. Because they are very reliable and versatile, they are a necessary part of demanding mechanical and structural applications.






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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