Maduka Metals, a leading manufacturer and supplier located in Abuja, Nigeria, specializes in high-quality Stainless Steel 321 Flat Bars. These bars are designed to offer exceptional corrosion resistance, impressive strength at high temperatures, and long-lasting durability. Crafted to meet international standards, they ensure reliable performance across various demanding sectors, including industrial, chemical, petrochemical, and power generation. Maduka Metals caters to a wide range of industries such as aerospace, marine, manufacturing, and energy, providing cutting-edge stainless steel solutions. With a focus on precision manufacturing and rigorous quality control, each Stainless Steel 321 Flat Bar boasts outstanding mechanical properties, resistance to oxidation and stress corrosion, and long-term stability, making them perfect for high-performance and structural applications.
The Stainless Steel 321 Flat Bars are made from austenitic stainless steel, which contains about 17–19% chromium, 9–12% nickel, 0.08–0.10% carbon, along with trace amounts of titanium, manganese, and silicon. The addition of titanium helps stabilize the steel against carbide precipitation during high-temperature use, boosting its durability. In terms of mechanical properties, 321 stainless steel flat bars have tensile strengths ranging from 550–750 MPa, yield strengths between 250–450 MPa, and a hardness of about 180–200 HB. This combination provides excellent corrosion resistance, high-temperature strength, and ductility, making them suitable for challenging industrial and chemical 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
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 |
The primary alloying element in Stainless Steel 321 is chromium, typically comprising around 17-19%. Chromium provides corrosion resistance, while titanium is added to improve high-temperature stability and prevent carbide precipitation during welding or prolonged exposure to elevated temperatures.
Stainless Steel 321 is most suitable for temperatures ranging from 800°F to 1500°F (427°C to 815°C). It excels in high-temperature environments due to its titanium stabilization, which prevents carbide precipitation and maintains corrosion resistance under prolonged heat exposure.
Typical dimensions of Stainless Steel 321 flat bars vary, with widths ranging from 20 mm to 150 mm, thicknesses between 3 mm and 50 mm, and lengths up to 6 meters, customizable based on specific requirements.
These Stainless Steel 321 Flat Bars find extensive use in industries that demand high-temperature performance, corrosion resistance, and mechanical reliability. In the chemical and petrochemical sectors, they are commonly utilized in heat exchangers, furnace components, piping systems, and reactors that come into contact with aggressive substances. In power generation, they are essential for boilers, turbines, and exhaust systems that operate under high temperatures. The aerospace and marine industries also rely on 321 flat bars for structural components and high-temperature equipment. Furthermore, these bars are perfect for various industrial applications, ensuring top-notch performance and reliability.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Maduka Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Abuja, Nigeria
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