Ranya Stainless, a leading manufacturer and supplier based in Muscat, Oman, is recognized for delivering high-performance stainless steel products tailored to demanding industrial environments. Among its specialized offerings, Stainless Steel 321H Bars stand out for their exceptional stability and durability at elevated temperatures. Designed using advanced manufacturing processes, these bars provide reliable strength, excellent surface finish, and long-term performance even in challenging applications. Backed by strict quality control and customer-focused service, Ranya Stainless ensures that every 321H bar meets international standards, making it a trusted choice for refineries, petrochemical plants, thermal equipment, and heavy-duty engineering projects.
Stainless Steel 321H Bars are composed mainly of iron with chromium (17–19%), nickel (9–12%), and titanium for improved stabilization against carbide precipitation. The “H” variant contains higher carbon content, enhancing strength at high temperatures. These bars offer strong mechanical properties, including high tensile and yield strength, excellent creep resistance, and good toughness even under thermal stress. Their superior oxidation resistance, thermal stability, and ability to perform in continuous service up to 900°C make them reliable for high-temperature, pressure-bearing, and structurally demanding environments.
| Standard | ASTM A276 / A479, ASME SA276 / A479 |
| Round Bar Size | 3mm~ 800mm |
| Square Bar Size | 4mm* 4mm ~100mm* 100mm |
| Flat Bar Size | 2mm ~ 100mm |
| Hex Bar Size | 2mm ~ 100mm |
| Angle Size | 3mm* 20mm* 20mm~ 12mm* 100mm* 100mm |
| Thickness | 50 mm to 6000 mm Long |
| Length | 1 To 6 Meters, Custom Cut Length |
| Form | Round, Square, Hex(A/F), Rectangle, Billet, Ingot, Forging Etc |
| Grade | C | Mn | Si | P | S | Cr | N | Ni | Ti | SS 321H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 0.10 max | 9.00 – 12.00 | 4(C+N) – 0.70 max |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1457 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
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At Ranya Stainless, Our stainless steel 321H poles undergo rigorous testing, including tensile, hardness and chemical analysis to ensure they meet international standards. Each product incorporates certifications such as ISO, ASTM, and mill test reports, providing reliability, durability and performance for a variety of industrial applications
Stainless Steel 321H Round Bars are designed for high-temperature applications, offering excellent oxidation resistance and mechanical strength. Ideal for use in aerospace, chemical processing, and high-temperature industrial components where durability and resistance to thermal degradation are crucial.
Stainless Steel 321H Flat Bars provide superior strength and resistance to high temperatures and oxidation. Suitable for manufacturing structural components, heat exchangers, and exhaust systems, these bars are used in industries where high performance under extreme conditions is required.
Stainless Steel 321H Square Bars are engineered for high-stress, high-temperature environments. They are commonly used in aerospace, petrochemical, and power generation industries for components such as reactor vessels, furnace parts, and structural supports due to their excellent thermal stability and strength.
Stainless Steel 321H Rectangular Bars offer high resistance to thermal and oxidation damage, making them suitable for high-temperature applications like furnace components, chemical processing equipment, and structural supports in demanding environments.
Stainless Steel 321H Hexagonal Bars provide exceptional strength and thermal stability, ideal for use in high-temperature applications such as gas turbines, exhaust systems, and chemical processing equipment. Their resistance to carbide precipitation ensures durability under extreme conditions.
Stainless Steel 321H T-Bars are utilized in high-temperature and high-stress environments, offering excellent strength and resistance to oxidation. They are commonly used in structural applications, including supports and frames in the aerospace, chemical processing, and energy sectors.
Stainless Steel 321H Bars are widely used in industries that require materials capable of performing under high temperatures and corrosive conditions. They are commonly utilized in heat exchangers, pressure vessels, boiler tubes, refinery equipment, and chemical processing systems. Their stability makes them ideal for furnace components, thermal processing units, and exhaust systems. In petrochemical plants, they serve in piping supports, reactors, and welded structures exposed to fluctuating temperatures. Additionally, 321H bars are preferred in aerospace, power generation, and mechanical engineering applications where long-term strength, durability, and resistance to scaling are essential.
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