Chung Metal provides excellent Stainless Steel 321 Hollow Bars, produced in Da Nang, Vietnam, to meet the needs of industries demanding heat-resistant and stabilizing weld materials. Grade 321 is titanium-stabilized austenitic stainless steel that excels for applications in high temperatures. Chung Metal provides accuracy in dimensions and consistency in properties by adhering to strict testing and manufacturing processes. Our 321 hollow bars are suitable for chemical processing, aerospace, exhaust system application, and pressure vessels. With guaranteed delivery and technical assistance, Chung Metal is a trusted supplier of Stainless Steel 321 solutions.
Stainless Steel 321 Hollow Bars consist mainly of 17–19% chromium, 9–12% nickel, and titanium (minimum 5 times the carbon). Low carbon content is used to provide resistance against intergranular corrosion. Mechanical properties are tensile strength of approximately 515–700 MPa, yield strength ~205–275 MPa, and elongation ~40%. The mechanical strength of the material does not decrease at elevated temperatures and possesses good oxidation resistance up to 870°C. Grade 321 is non-magnetic and maintains its austenitic microstructure even after long-term exposure to high temperatures.
| 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 |
The addition of titanium in SS 321 stabilizes carbon, preventing the formation of chromium carbides at grain boundaries. This reduces the risk of intergranular corrosion, improving the alloy's resistance to corrosion in high-temperature environments and aggressive chemical conditions.
In aerospace, SS 321 Hollow Bar is used for exhaust systems, jet engine components, and fuel systems due to its high-temperature resistance. In the chemical industry, it's used for heat exchangers, reactors, and piping in corrosive environments.
321 Hollow Bars of Stainless Steel are used extensively in conditions of high heat and corrosive environments. Typical applications include exhaust systems on aircraft, thermal oxidizers, chemical equipment in high temperatures, heat exchangers, and refineries. Because of its resistance to intergranular corrosion, 321 is used in components subjected to repeated welding or thermal cycling. It is also employed in naval applications and piping expansion joints where long-term performance at high temperature is essential. Aerospace, petrochemical, and power generation industries are also beneficiaries of its stable operation.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Chung Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Da Nang, Vietnam
Copyright 2024 Chung Metals. All rights reserved
