Louis Metals, a trusted stainless steel manufacturer and supplier located in Houston, USA, proudly offers top-quality Stainless Steel 446 Flat Bars, engineered for outstanding performance in high-temperature and highly corrosive settings. SS 446 is a ferritic, heat-resistant stainless steel known for its remarkable resistance to oxidation and scaling at temperatures reaching up to 1100°C (2012°F). Our 446 flat bars are crafted with precision to meet ASTM standards, making them perfect for use in furnaces, heat exchangers, kilns, and thermal processing equipment. Louis Metals provides durable, corrosion-resistant flat bars tailored to the needs of the power generation, metallurgical, and petrochemical sectors.
Stainless Steel 446 Flat Bar consists of 23–27% chromium, along with low carbon content (maximum 0.20%) and trace amounts of molybdenum, silicon, and manganese. This high chromium level ensures excellent resistance to oxidation, sulfidation, and thermal fatigue. Its mechanical properties include a tensile strength ranging from 485 to 750 MPa, a yield strength of about 275 MPa, and a Brinell hardness of roughly 170 to 220 HB. While it can’t be hardened through heat treatment, 446 maintains impressive structural integrity even in extreme temperatures and corrosive environments, especially those containing sulfur compounds or chlorides.
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
Range : Range – 3.17mm to 350mm dia
| 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 |
Stainless Steel 446 Flat Bars find extensive use in high-temperature industrial applications that require exceptional scaling and corrosion resistance. They are commonly utilized in furnace components, radiant tubes, burner assemblies, heat shields, kiln linings, and incinerator parts. This alloy excels in both oxidizing and sulfidizing environments, making it ideal for the petrochemical, metallurgical, and thermal processing industries. Thanks to its high chromium content, it also offers strong corrosion resistance in nitric acid and molten salt environments. Louis Metals provides SS 446 flat bars in various sizes to meet diverse industry needs.
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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