Kanish Metals is a well-known manufacturer and supplier in Dubai, UAE, and provides high-quality Stainless Steel 321H Rectangular Bars that are made to perform under harsh industrial conditions. Made with high precision and in conformity with international standards, these bars are famous for their strength, durability, and corrosion resistance. Stainless Steel 321H is a high-carbon, titanium-stabilized austenitic stainless steel that offers superior resistance against intergranular corrosion, scaling, and oxidation at higher temperatures. With dedication to quality, timely delivery, and customer satisfaction, Kanish Metals continues to supply Stainless Steel 321H Rectangular Bars to industry.
321H Stainless Steel Rectangular Bars consist of chromium (17–19%), nickel (9–12%), and titanium stabilizers with a little more carbon than SS 321, increasing high-temperature strength. The alloy enhances creep strength, stress rupture strength, and structure stability with long-term exposure to high heat. SS 321H Rectangular Bars are mechanically high in tensile strength, hardness is good, and toughness is excellent, yet resistant to thermal fatigue and oxidation. Their metallurgical characteristics qualify them for applications involving toughness under harsh conditions.
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.
321H Stainless Steel Rectangular Bars find extensive application in petrochemical, power generation, aerospace, and chemical processing industries. They are utilized in boiler hardware, superheater tubing, furnace components, heat exchangers, and exhaust systems, where they work reliably under prolonged high-temperature exposure. Their stability and strength render them appropriate for pressure vessels, welded structures, and refinery equipment subject to thermal stress. They also find applications in pharmaceuticals and food processing where corrosion resistance makes them necessary. SS 321H Rectangular Bars are appreciated for their durability and adaptability in severe operating conditions.






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Kanish Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Dubai, UAE
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