Phehlukwayo Metal, a reputable manufacturer and supplier located in Cape Town, South Africa, is dedicated to providing top-notch Stainless Steel 321 Flat Bars for a variety of industries. Renowned for our precision engineering, durability, and outstanding performance, our Stainless Steel 321 Flat Bars are crafted to meet the demanding standards of today’s construction and manufacturing sectors. With a strong commitment to quality, Phehlukwayo Metal delivers products that boast remarkable resistance to corrosion, oxidation, and high-temperature conditions. Our skilled team ensures that each flat bar adheres to precise specifications, making us a go-to partner for dependable stainless steel solutions throughout South Africa and beyond.
Stainless Steel 321 Flat Bar is an austenitic stainless steel alloy primarily made up of chromium (17–19%), nickel (9–12%), and titanium (≤0.7%), which boosts its resistance to intergranular corrosion after being exposed to high temperatures. It provides excellent mechanical strength, featuring a tensile strength of about 515 MPa and a yield strength of 205 MPa. This alloy maintains good ductility and toughness, even when subjected to elevated temperatures. Thanks to its titanium stabilization, it outperforms 304 stainless steel in applications that involve continuous heat exposure and corrosive 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.
Stainless Steel 321 Flat Bar finds extensive use in industries that demand materials with high-temperature strength and corrosion resistance. Typical applications include heat exchangers, furnace components, exhaust manifolds, jet engine parts, and chemical processing equipment. It’s also used in thermal oxidizers, expansion joints, and food processing machinery, where hygiene and durability are essential. With its excellent oxidation resistance and structural integrity at high temperatures, Stainless Steel 321 Flat Bar is the perfect choice for environments that require long service life and reliable performance under thermal stress and corrosive conditions.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Phehlukwayo Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Cape Town, South Africa
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