George Metals, a leading manufacturer and supplier located in Houston, USA, specializes in high-quality Stainless Steel 321 Hollow Bars designed for high-temperature and corrosion-resistant applications. SS 321 is a stabilized austenitic stainless steel that boasts impressive resistance to intergranular corrosion, particularly after being subjected to high temperatures. George Metals ensures that their hollow bars are crafted with precise tolerances, a superior surface finish, and outstanding mechanical properties, guaranteeing reliable performance even in the toughest environments. These 321 Hollow Bars are commonly found in the petrochemical, aerospace, and heat treatment industries, built for durability, longevity, and structural integrity in both pressure and structural applications
Stainless Steel 321 is an austenitic stainless steel alloy that contains 17–19% chromium, 9–12% nickel, and is stabilized with titanium (at least five times the carbon content) to prevent carbide precipitation. This stabilization significantly boosts its resistance to intergranular corrosion. The alloy provides a tensile strength ranging from 515–750 MPa, a yield strength of about 205 MPa, and exhibits good ductility, toughness, and creep resistance at elevated temperatures. SS 321 retains excellent mechanical strength in oxidizing environments up to 870°C, making it perfect for thermal processing and pressure-based systems where weldability and corrosion resistance are crucial.
| 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 extensive use in heat exchangers, exhaust systems, aerospace manifolds, expansion joints, chemical process piping, and refinery equipment. Their ability to resist high-temperature oxidation and intergranular corrosion makes them ideal for applications involving thermal cycles and pressure containment. In the aerospace and automotive sectors, they are commonly used in components that experience repeated heating and cooling. Additionally, SS 321 is a favored choice in the pharmaceutical and food processing industries, where reliability and safety are paramount.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
George 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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