Louis Metals supplies Stainless Steel 446 Square Bars and Rods, produced in Houston, USA, for industrial and high-temperature corrosion-resistant use. Grade 446 is a ferritic stainless steel that has high resistance to oxidation, sulfidation, and scaling in temperatures up to 1100°C. Square bars have strong geometry for load-bearing components and machining processes. Louis Metals offers 446 square bars of different sizes and finishes, produced according to ASTM A276 standards. These bars are ideal for the construction of furnaces, thermal processing hardware, and chemical plant equipment that works at the extremes of temperature and oxidation.
Stainless Steel 446 has 23–27% chromium, extremely low carbon content (<0.20%), and trace amounts of silicon, manganese, and molybdenum. It offers tensile strength of 415–585 MPa and has good oxidation resistance at elevated temperatures. Its ferritic structure provides great thermal stability and sulfur-atmosphere resistance. 446 is magnetic, non-heat treatable, and shows moderate corrosion resistance in oxidizing conditions. Louis Metals provides square bars with straight edges, consistent cross-sections, and high thermal resistance for industrial processes needing dimensional integrity under conditions of heat stress.
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 446 | 0.2 | 23.00 | 1.5 | 0.50 | 0.040 | 0.030 | 0.75 |
| Element | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness (Brinell (HB) max) |
| SS 446 | Psi – 75,000 , MPa – 485 | Psi – 40,000 , MPa – 275 | 20 % | – |
| STANDARD | WERKSTOFF NR. | UNS |
| SS 446 | 1.4762 | S44600 |
| 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 | – | – |
Yes, Stainless Steel 446 Square Bars are highly corrosion-resistant due to their high chromium content. They are particularly effective in resisting oxidation and scaling at elevated temperatures.
Yes, Stainless Steel 446 square bars can be welded using appropriate welding techniques like TIG or MIG welding. However, preheating and post-weld heat treatment may be required to minimize the risk of cracking and maintain structural integrity.
Yes, we provide stainless steel 446 square bars and rods in standard and customized dimensions and polishes to meet your specific project requirements. For more details mail us on sales@www.louismetals.us
Stainless Steel 446 Square Bar and Rods are widely found in industrial furnaces, kilns, heat treating baskets, and thermal processing machinery. High resistance to oxidation and corrosion allows them for use in radiant tubes, recuperators, muffles, and gas burners. In the petrochemical sector, 446 finds application in flue gas systems, catalytic converters, and reformer uses. Square profile imparts structural integrity for support frames and mechanical parts subject to cyclic heat. Louis Metals provides cut–to-size 446 square bars for service in high-temperature and oxidation-prone applications, with special or standard orders.






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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