Phehlukwayo Metal, located in Cape Town, South Africa, is a reputable manufacturer and supplier of top-notch Stainless Steel 321 Square Bars and Rods. Known for their impressive high-temperature strength, resistance to corrosion, and overall durability, these square bars and rods are crafted for tough industrial and engineering tasks. Phehlukwayo Metal prides itself on precision manufacturing, rigorous quality control, and compliance with international standards, ensuring that their products deliver reliability, accurate dimensions, and long-lasting performance. Their Stainless Steel 321 Square Bars and Rods are perfect for components that face extreme heat, thermal cycling, and harsh environments, making them a popular choice in the aerospace, chemical, and power generation sectors.
These Stainless Steel 321 Square Bars and Rods are primarily made of iron, featuring 17–19% chromium, 9–12% nickel, 0.04% carbon, and a touch of titanium for stabilization. This austenitic stainless steel is known for its excellent high-temperature strength, solid corrosion resistance, and good weldability. In terms of mechanics, 321 Square Bars and Rods boast a tensile strength ranging from 600 to 850 MPa, along with high yield strength and decent ductility. Their blend of toughness, thermal stability, and oxidation resistance makes them ideal for components that operate under high temperatures and corrosive conditions.
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
Size : Tolerance: H8, H9, H10, H11, H12, H13K9, K10, K11, K12
| 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. |
| Grade | Tensile Str (MPa) min | Yield Str 0.2% Proof (MPa) min | Elong (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 321 | 515 | 205 | 40 | 95 | 217 |
| STANDARD | WERKSTOFF NR. | UNS |
| SS 321 | 1.4541 | S32100 |
| SQUARES | ||
|---|---|---|
| Size(mm) | WT PER FEET IN KGS | WT PER MTR IN KGS |
| 16 | 0.62 | 2.05 |
| 18 | 0.79 | 2.59 |
| 20 | 0.76 | 2.49 |
| 22 | 1.18 | 3.87 |
| 25 | 1.52 | 5.00 |
| 28 | 1.91 | 6.27 |
| 30 | 2.19 | 7.20 |
| 32 | 2.50 | 8.19 |
| 36 | 3.16 | 10.37 |
| 38 | 3.52 | 11.55 |
| 40 | 3.90 | 12.80 |
| 45 | 4.94 | 16.20 |
| 50 | 6.10 | 20.00 |
| 56 | 7.65 | 25.08 |
| 60 | – | – |
| 65 | – | – |
| 70 | – | – |
| 75 | – | – |
| 80 | – | – |
| 90 | – | – |
| 100 | – | – |
Stainless Steel 321 Square Bars are available in a range of sizes, typically from ¼" to 12" in width. Common finishes include mill finish, polished, and cold drawn.
Yes, Stainless Steel 321 Square Rods can be welded using most standard welding techniques. However, post-weld heat treatment may be required to maintain its properties and prevent sensitization.
Stainless Steel 321 Square Bars are generally non-magnetic in their annealed condition. However, they may exhibit slight magnetic properties if cold-worked.
You’ll find Stainless Steel 321 Square Bars and Rods commonly used in the production of furnace components, heat exchangers, boiler tubes, chemical processing equipment, and aerospace parts. Their ability to resist high-temperature corrosion makes them perfect for power generation, petrochemical, and industrial machinery that are exposed to oxidizing and high-heat environments. Additionally, they are utilized in structural and mechanical applications that demand dimensional stability, strength, and long-term reliability. Phehlukwayo Metal’s Stainless Steel 321 Square Bars and Rods consistently deliver quality, exceptional durability, and dependable performance for even the most challenging industrial and engineering applications.






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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