Based in Delhi, India, Harshita Stainless is a reputable producer and supplier of premium stainless steel 321H bars that are made to function exceptionally well in corrosive and high-temperature conditions. These bars are well-known for their improved mechanical strength and creep resistance, making them perfect for structural and pressure applications. In accordance with global standards and client-specific specifications, Harshita Stainless provides precisely engineered 321H bars in a range of sizes and specifications. The company serves a variety of industries, including petrochemicals, power generation, aerospace, and heat treatment plants throughout India and international markets, with a strong commitment to quality, durability, and on-time delivery.
Compared to standard 321, stainless steel 321H bars have a higher carbon content (0.04–0.10%), nickel (9–13%), and chromium (17–20%), with titanium added for stability. Strength at high temperatures and resistance to intergranular corrosion are improved by this composition. The bars have an elongation of 35–40%, a yield strength of 205 MPa, and a tensile strength of roughly 515 MPa. With its good weldability and oxidation resistance, 321H is appropriate for applications requiring prolonged exposure to high temperatures while maintaining structural integrity under thermal stress.
| 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 Harshita 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.
Applications needing strength, resistance to heat, and defence against intergranular corrosion make extensive use of stainless steel 321H bars. They are used in furnace components, pressure vessels, heat exchangers, and catalytic reactors in the petrochemical and oil and gas industries. The aerospace industry uses these bars for exhaust manifolds and jet engine parts, and power plants use them in boiler systems and superheaters. They are perfect for high-temperature piping systems and structural supports because of their stability under thermal cycling. In the food processing and pharmaceutical industries, where oxidation resistance and hygienic conditions are essential, 321H bars are also utilised.
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