Louis Metals is a reliable manufacturer and distributor of Stainless Steel 321 Square Bars and Rods in Houston, USA, offering high-quality stainless steel products suitable for corrosive and high-temperature conditions. Produced with modern manufacturing processes and high-quality raw materials, SS 321 square bars and rods provide superior resistance to corrosion and oxidation between grains. Titanium-stabilized stainless steels like these are best suited for welding operations and exposure to heat over long periods. Due to outstanding strength, weldability, and stability, Louis Metals’ Stainless Steel 321 square bars/rods find extensive use in the aerospace, petrochemical, and thermal processing sectors.
Austenitic stainless steels that are Titanium-stabilized with Chromium (17–19%), Nickel (9–12%), and Titanium (≥ 5x carbon content) for carbide precipitation avoidance constitute Stainless Steel 321 Square Bars/Rods. The alloy gives a tensile strength of 515–750 MPa and yield strength of approximately 205 MPa. SS 321 has very good mechanical properties and corrosion resistance up to 870°C. It is non-magnetic in the annealed state and exhibits excellent resistance to oxidation, intergranular corrosion, and thermal fatigue and is best suited for applications at high temperatures, welded, and bearing stresses.
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 and Rods find extensive usage in strength, heat-resistance, and corrosion-resistant applications. Applications include heat exchangers, exhaust manifolds, furnace parts, pressure vessels, and high-temperature piping systems. In aerospace and automotive applications, SS 321 finds application in engine parts, brackets, and structural assemblies which are subject to harsh heat. It is also used in chemical processing, power generation, and refinery equipment in which thermal cycling and corrosion are an issue. The square profile adds strength and stiffness and is therefore best suited for frames, support members, and machined parts.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Louis Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Houston, USA
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