Phehlukwayo Metal, located in Cape Town, South Africa, stands out as a trusted manufacturer and supplier of top-notch stainless steel products, providing a diverse array of solutions tailored to meet industrial needs. Among their exceptional offerings are Stainless Steel 321H Bars and Rods, a high-carbon variant of the 321 grade, specifically crafted for superior strength at elevated temperatures. Renowned for their remarkable resistance to oxidation and intergranular corrosion, these bars are perfect for high-temperature structural applications. Phehlukwayo Metal guarantees that every product adheres to international quality standards, ensuring performance, durability, and precision for clients throughout South Africa and beyond.
The composition of Stainless Steel 321H Bars and Rods includes 17–19% chromium, 9–12% nickel, and titanium stabilizers, along with a higher carbon content (0.04–0.10%) compared to standard 321. This elevated carbon level enhances high-temperature strength and creep resistance. The material boasts a tensile strength of about 515–750 MPa and a yield strength of around 205 MPa, while also offering good ductility and weldability. The titanium content plays a crucial role in preventing carbide precipitation during welding, which boosts resistance to intergranular corrosion. These characteristics make Stainless Steel 321H suitable for continuous exposure to temperatures reaching up to 900°C in oxidizing environments.
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Standards |
ASTM A276, A479, A582, GB4226-84, GB/T1220-2007, JISG4311-91, JIS G4318-98, EN 10095-99, GB4226-84, EN10088-3-2005, JIS G4303-2005, etc |
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Stainless Steel Round Bar type |
ASTM A276 321h stainless steel round bars |
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Range |
Range – 3.17mm to 350mm dia |
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Technique |
Forged/Hot Rolled/Cold Drawn/Peeled |
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Diameter |
2.0-400mm |
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Surface |
bright round bar, pickled round bar, black round bar |
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Length |
3000mm, 6000mm or according to the customer’s requirement. |
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Type |
Round bar, rod, square bar, flat bar, hexagon bar, angle bar, channel bar, threaded bar |
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Package Details |
Standard seaworthy package(wooden boxes package,pvc package, or other package) |
| Grade | C | Mn | Si | P | S | Cr | Ti | Ni | N |
| SS 321h | 0.04 – 0.10 max | 2 max | 0.75 max | 0.045 max | 0.03 max | 17 – 19 | 4xC min 0.60% max | 9 – 12 | 0.10 max |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1454 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
| SS 321h | 1.4541 | S32109 | SUS 321h | – | – | – | X6CrNiTi18-10 |
Stainless Steel 321H is a high-carbon version of 321 stainless steel. The higher carbon content in 321H improves its high-temperature strength, making it ideal for use in environments with temperatures over 800°C (1472°F). While both offer excellent resistance to oxidation and corrosion, 321H is particularly suited for applications with higher thermal stresses.
Stainless Steel 321H Bars and Rods are commonly used in industries such as aerospace, chemical processing, power generation, and marine environments. They are ideal for high-temperature applications such as heat exchangers, reactor cores, and furnace parts.
Yes, Stainless Steel 321H Bars and Rods can be welded effectively. The addition of titanium in the alloy reduces the risk of carbide precipitation during welding, making them suitable for high-temperature applications where welding is required.
Stainless Steel 321H Bars and Rods find extensive use in industries that demand both high-temperature strength and corrosion resistance. Typical applications include heat exchangers, furnace components, jet engine parts, chemical processing systems, and exhaust manifolds. They are also utilized in oil refineries, power plants, and the aerospace sector, where resistance to oxidation and structural integrity at elevated temperatures are essential.






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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