Isis Metals stands out as a reliable manufacturer and supplier of Stainless Steel 321H Hollow Bars right here in Manila, Philippines. We take pride in offering top-notch stainless steel products designed for high-temperature and corrosive environments. Our Stainless Steel 321H Hollow Bars are titanium-stabilized austenitic stainless steels with a higher carbon content, which means they deliver exceptional creep strength, oxidation resistance, and structural integrity even under intense heat. Crafted with precision and in line with international standards, these hollow bars are known for their excellent weldability and durability. Industries like petrochemical, power generation, aerospace, and chemical processing trust Isis Metals for their needs in extreme conditions.
Stainless Steel 321H Hollow Bars are made up of chromium (17–19%), nickel (9–12%), carbon (0.04–0.10%), and titanium (≥5×C%), along with small amounts of manganese, silicon, and phosphorus. The increased carbon content boosts their high-temperature strength, creep resistance, and oxidation stability. These bars have a tensile strength of 515 MPa, yield strength of 205 MPa, and an elongation of 40%. Renowned for their excellent ductility, corrosion resistance, and mechanical stability, Stainless Steel 321H Hollow Bars are perfect for components that face high heat, pressure, and corrosive conditions.
| 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 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 0.10 max | 9.00 – 12.00 | 5(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 % |
| Denstiy lbm/in3 | Coefficient of Thermal Expansion (min/in)-°F | Thermal Conductivity BTU/hr-ft-°F | Specific Heat BTU/lbm -°F | Modules of Elasticity (annealed)2-psi | |
|---|---|---|---|---|---|
| at 68 °F | at 68 – 212°F | at 68 – 1832°F | at 200°F | at 32 – 212°F | in tension (E) |
| 0.286 | 9.2 | 20.5 | 9.3 | 0.12 | 28 x 106 |
SS 321H hollow bars are widely used in industries like aerospace, petrochemical, power generation, and chemical processing. They are preferred for high-temperature applications due to their excellent thermal stability, oxidation resistance, and resistance to stress-induced cracking at elevated temperatures.
SS 321H hollow bars are typically available in diameters ranging from 25mm to 500mm, with tolerances conforming to ASTM or ISO standards. Common surface finishes include annealed, pickled, and polished, catering to various industrial and aesthetic requirements.
Stainless Steel 321H Hollow Bars find their place in various industries, including chemical processing, petroleum refining, aerospace, and power generation, thanks to their outstanding thermal and corrosion resistance. They are particularly suited for applications like heat exchangers, pressure vessels, exhaust manifolds, boiler tubes, and furnace parts, where strength and oxidation resistance at high temperatures are crucial. Additionally, these hollow bars are utilized in heat treatment fixtures, expansion joints, and catalytic converter systems. With their remarkable formability, weldability, and stability, Stainless Steel 321H Hollow Bars are a go-to choice for demanding environments.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Isis Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Manila, Philippines
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