Louis Metals is a prominent Stainless Steel 321 Hollow Bar manufacturer and supplier in Houston, USA, providing high-quality stainless steel products designed for applications at high temperatures and against corrosion. High on precision, quality, and performance, Louis Metals produces SS 321 hollow bars through sophisticated processes and high-quality materials to cater to key industries. SS 321 hollow bars offer superior resistance to intergranular corrosion and oxidation, particularly in high-heat conditions. Stainless Steel 321 hollow bars find applications in chemical processing, aerospace, and thermal systems where heat resistance, structural integrity, and durability are crucial.
Stainless Steel 321 Hollow Bars consist of titanium-stabilized austenitic stainless steels that contain a minimum of Chromium (17–19%), Nickel (9–12%), and Titanium (in an amount at least five times the carbon content). This prevents carbide precipitation during welding and results in enhanced resistance to intergranular corrosion. SS 321 contains tensile strength of 515–750 MPa, yield strength of approximately 205 MPa, and improved creep and stress rupture strength at high temperatures. Non-magnetic in annealed condition, the hollow bars exhibit excellent mechanical properties and corrosion resistance at high temperatures with the added advantage of a hollow structure that offers material and weight efficiency.
| 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 321 | 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 |
Stainless Steel 321 Hollow Bars find applications in a variety of processes where high-temperature strength and oxidation and corrosion resistance are needed. They find everyday applications in heat exchangers, furnace parts, expansion joints, exhaust systems, and boiler tubing. They are employed in the chemical and petrochemical industry for process piping and welded equipment that is exposed to hostile media and high temperatures. Their weldability and thermal stability are excellent, and they are apt for aerospace and marine applications. The hollow shape minimizes material weight without compromising structural integrity, thus SS 321 hollow bars become an economical option for precision-engineered systems.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Louis Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Houston, USA
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