Stainless Steel 321H bars are crafted from a special austenitic chromium-nickel alloy (UNS S32109) that’s stabilized with titanium and has a higher carbon content than the standard 321, giving it an edge in high-temperature strength. This alloy is great at resisting oxidation, corrosion, and scaling, holding up effectively even at temperatures up to 900 °C, which makes it perfect for those elevated-temperature settings.
The typical makeup of this alloy includes carbon at 0.04–0.10%, chromium ranging from 17–19%, nickel between 9–12%, and titanium up to 0.7%. When it comes to mechanical properties, you can expect a tensile strength of around 515 MPa, a yield strength of 205 MPa, and an elongation of about 35%. Plus, it boasts excellent resistance to creep and stress rupture.
| 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 % |
Contact us to get a quick quote for your requirement.
At Akor 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.
You’ll find Stainless Steel 321H bars commonly used in applications like heat exchangers, boiler equipment, jet engine components, exhaust manifolds, petrochemical plants, and furnace parts, where high-temperature performance and structural stability are a must.
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