Louis Metals is a prominent stainless steel products manufacturer and supplier located in Houston, USA, and provides premium quality Stainless Steel 321 Flat Bars suitable for corrosion-resistant and high-temperature applications. These flat bars are engineered precisely and consistently following stringent quality control protocols by employing cutting-edge manufacturing technologies. Louis Metals supplies top-quality flat bars to a number of diverse industries such as the aerospace, chemical processing, and power generation industries, and provides customized solutions as well as standard sizes. Renowned for reliability, quick service, and technical proficiency, the company guarantees that its Stainless Steel 321 Flat Bars provide superior performance in severe operating conditions in both local and global markets.
Stainless Steel 321 Flat Bar is a titanium-stabilized austenitic stainless steel containing 17–19% chromium, 9–12% nickel, and supplemental titanium to avoid intergranular corrosion following welding. It possesses excellent oxidation and scaling resistance at elevated temperatures. With tensile strength of approximately 515 MPa, yield strength of 205 MPa, and elongation of approximately 40%, 321 stainless steel retains mechanical strength in uninterrupted service to the range 870–900°C. The flat form gives constant thickness and is ideal for fabrication, reinforcement against structural loads, and uses requiring resistance to heat, pressure, and corrosion over a period of time.
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 321 | 0.08 max. | 17.0 – 19.0 | 2.00 max. | 9.0-12.0 | 0.045 max. | 0.03 max. | 0.75 max |
| 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. |
| STANDARD | WERKSTOFF NR. | UNS |
| SS 321 | 1.4541 | S32100 |
Stainless Steel 321 Flat Bar is extensively employed in processes that demand high-temperature strength along with corrosion resistance, particularly where welding is concerned. It is utilized in heat exchangers, furnace components, exhaust manifolds, aircraft engine components, and expansion joints. The flat shape is ideal for brackets, frames, support plates, and other structural pieces. Stainless Steel 321 finds particular application in chemical and petrochemical facilities where stress corrosion and thermal cycling are issues. Its titanium-stabilized microstructure avoids carbide precipitation, making it a good material choice for welded equipment with high heat and corrosive media exposure over long terms.
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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