Semih Metals, a trusted manufacturer and supplier based in Istanbul, Turkey, specializes in delivering premium quality Stainless Steel 321 Flat Bars to a wide range of industries. With a strong focus on precision engineering, durability, and international quality standards, the company has built a reputation for excellence in the stainless steel sector. Stainless Steel 321 Flat Bars offered by Semih Metals are recognized for their outstanding resistance to corrosion, superior strength, and excellent thermal stability. By combining advanced production techniques with a commitment to customer satisfaction, Semih Metals ensures reliable products that meet the diverse needs of both domestic and global markets.
Stainless steel 321 flat bar is an alloy of austenitic stainless steel containing chromium, nickel and titanium. Its composition is typically 17-19% chromium, 9-12% nickel and 2-3% titanium. The addition of titanium enhances intergranular corrosion resistance, especially at high temperatures. Mechanically, it offers good strength and ductility, with a yield strength of about 205 MPa and a tensile strength of 505-745 MPa. It has excellent weldability, thermal stability and oxidation resistance, making it suitable for high temperature applications in industries such as aerospace, chemical processing and power generation
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.
stainless steel 321 Flat Bar is widely used in the applications where high temperatures along with corrosion resistance are in need. Its intergranular corrosion resistance makes it suitable for use in the air space, chemical and petrochemical industries. Heat exchangers, aircraft components, furnace components, high-temperature pipes are its common applications. This material has been used for applications with exhaust systems, welding parts, and marine exposure; its strength, stability and oxidation resistance ensure that these components are reliable even under hard environments in.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Semih Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Istanbul, Turkey
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