Phehlukwayo Metal, a prominent manufacturer and supplier located in Cape Town, South Africa, is dedicated to crafting top-notch Stainless Steel 321H Rectangular Bars that are designed for outstanding performance in high-temperature and corrosive settings. With cutting-edge manufacturing capabilities and a strong commitment to quality, the company guarantees that every bar adheres to rigorous international standards. The Stainless Steel 321H Rectangular Bars from Phehlukwayo Metal are well-known for their remarkable strength, stability, and resistance to oxidation, making them perfect for industries that require reliability, precision, and durability in extreme working conditions.
These bars are primarily made of iron, featuring 17–19% chromium, 9–12% nickel, and a carefully controlled amount of titanium to prevent carbide precipitation. The “H” designation signifies a higher carbon content, which boosts high-temperature strength and creep resistance. They boast a tensile strength of around 515 MPa, along with good ductility, toughness, and formability. Their exceptional resistance to oxidation and intergranular corrosion makes them suitable for extended use in high-temperature applications.
Standard : 321H / 1.4878
Range : 3.17mm to 350mm dia
Designation : ASTM A276, ASME SA276
Finish : Bright, Black, Polish
Thickness: 4.0mm – 100mm
Type: Bright Bar, Black Bars, Hex Bar, Square Bar, Rods, Polish Bar, Forged Bar, Round Bar
Length : Random, Fix & Cut Length
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Ti |
| 321H | 0.04 – 0.10 | 2 max | 0.75 max | 0.045 max | 0.03 max | 17 – 19 | 3 – 4 | 9 – 12 | – | 4xC min 0.60% max |
| Density | 8.0 g/cm3 |
| Melting Point | 1454 °C (2650 °F) |
| Tensile Strength | Psi – 75000 , MPa – 515 |
| Yield Strength (0.2%Offset) | Psi – 30000, MPa – 205 |
| Elongation | 35 % |
| Standard | SS 321H |
| UNS | S32109 |
| WERKSTOFF NR. / DIN | 1.4878 |
Choose Stainless Steel 321H Rectangular Bars based on their excellent high-temperature resistance and resistance to carbide precipitation in welding applications. Consider mechanical strength, corrosion resistance, and desired thermal stability for specific use cases.
Stainless Steel 321H Rectangular Bars generally do not require corrosion protection coatings due to their inherent corrosion resistance. However, coatings can be applied for enhanced protection in aggressive environments or specific applications.
Yes, Stainless Steel 321H Rectangular Bars can be welded, offering excellent weldability. However, using appropriate filler materials and controlling heat input is essential to prevent carbide precipitation and maintain corrosion resistance.
Stainless Steel 321H Rectangular Bars find extensive application in sectors like chemical processing, petrochemical, power generation, and aerospace, where heat and corrosion resistance is essential. They are perfect for creating heat exchangers, furnace components, exhaust manifolds, expansion joints, and pressure vessel parts. Thanks to their superior thermal stability and mechanical strength, they can reliably operate in continuous service at temperatures reaching up to 900°C. Additionally, these bars are highly valued in refineries and industrial heating systems for their ability to endure thermal cycling and oxidation.
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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