Isis Metals is a reliable manufacturer and supplier of Stainless Steel 321 Square Bars and Rods based in Manila, Philippines. We take pride in offering top-notch stainless steel products that boast exceptional strength, durability, and resistance to corrosion. Our Stainless Steel 321 Square Bars and Rods are made from titanium-stabilized austenitic stainless steels, which provide outstanding protection against intergranular corrosion and oxidation, even at high temperatures. Designed to retain excellent mechanical properties under thermal stress, our 321 products meet international standards and are commonly used in industries like chemical processing, aerospace, oil refining, and heat treatment for long-lasting, high-temperature applications.
Stainless Steel 321 Square Bars and Rods are made up of chromium (17–19%), nickel (9–12%), carbon (≤0.08%), and titanium (≥5×C%), along with small amounts of manganese, silicon, and phosphorus. The addition of titanium helps prevent carbide precipitation, boosting resistance to intergranular corrosion. These bars and rods have a tensile strength of around 515 MPa, a yield strength of 205 MPa, and an elongation of 40%. They also offer impressive creep strength, oxidation resistance, and weldability, making them perfect for high-temperature and high-pressure environments.
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.
You’ll find Stainless Steel 321 Square Bars and Rods widely used in the aerospace, chemical processing, power generation, and petrochemical sectors, thanks to their excellent thermal and corrosion resistance. They’re perfect for applications like heat exchangers, exhaust manifolds, expansion joints, pressure vessels, and furnace components that operate at high temperatures. Additionally, these bars and rods are utilized in boilers, catalytic converters, and refinery equipment where high-temperature strength is crucial. Their remarkable formability, weldability, and mechanical stability make Stainless Steel 321 Square Bars and Rods a top choice for demanding applications.














We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Isis Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Manila, Philippines
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