Al Summan Metals provides SS 321H hollow bars, that conform to strict international quality benchmarks by way of a demanding testing procedure. Our experienced production and quality control staff carefully supervise each phase of manufacturing to guarantee that the highest quality is reached. Our quality specialists carry out thorough assessments of the physical, mechanical, and chemical characteristics of every product. A wide array of tests, encompassing hardness testing, mechanical and chemical analysis, intergranular corrosion resistance, and positive material identification, is conducted to confirm the product’s performance. Each product comes with complete test certificates and analysis reports, ensuring the highest level of quality assurance.
SS 321H hollow barsare made up of chromium (17-19%), nickel (9-12%), and titanium (0.7%), along with regulated levels of carbon (0.04-0.10%), manganese (up to 2%), and silicon (up to 1%). This makeup guarantees outstanding strength at high temperatures and defense against oxidation and corrosion. The mechanical characteristics feature a minimum tensile strength of 515 MPa, a minimum yield strength of 205 MPa, and 40% elongation. The material shows exceptional toughness and longevity, which makes it well-suited for challenging uses across the chemical, aerospace, and thermal processing sectors.
| 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 find broad application across sectors such as aerospace, petrochemical, power generation, and chemical processing. They are the material of choice for high-temperature uses thanks to their outstanding thermal stability, oxidation resistance, and ability to withstand stress-induced cracking at elevated temperatures.
SS 321H hollow bars are generally offered in diameters spanning 25mm to 500mm, with tolerances that meet ASTM or ISO standards. Typical surface finishes comprise annealed, pickled, and polished, serving a range of industrial and aesthetic needs.
SS 321H hollow barsare extensively utilized in high-temperature and corrosive settings owing to their outstanding strength and oxidation resistance. They are perfect for use in the aerospace, chemical, and petrochemical sectors, including heat exchangers, boiler tubes, and pressure vessels. Their exceptional intergranular corrosion resistance makes them well-suited for dealing with acidic and alkaline conditions. Moreover, these hollow bars find application in thermal processing equipment, exhaust manifolds, and automotive parts where toughness and high-temperature capability are essential. SS 321H is a favored option for challenging engineering applications.
We supply products accompanied by both mill test certificates and third-party test certificates, guaranteeing the highest standards of quality and compliance.
Al Summan 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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