Semih Metals, located in Istanbul, Turkey, stands out as a top manufacturer and supplier of high-quality stainless steel products, including the Stainless Steel 321H Hollow Bar. Known for its dedication to quality and precision, Semih Metals caters to a diverse range of industries, providing products that meet international standards. The company skillfully blends advanced manufacturing techniques with strict quality control to produce hollow bars that are durable, corrosion-resistant, and high-performing. With a strong emphasis on customer satisfaction and timely deliveries, Semih Metals has earned a reputation as a reliable partner for businesses in need of dependable stainless steel solutions for challenging industrial applications.
The Stainless Steel 321H Hollow Bar is a high-temperature resistant alloy, primarily made up of iron, chromium (17–19%), nickel (9–12%), and titanium, which is added to boost its resistance to intergranular corrosion. This alloy boasts impressive mechanical properties, such as high tensile strength, yield strength, and good elongation. It retains its strength even at elevated temperatures and offers outstanding creep and oxidation resistance, making it perfect for tough environments. Its toughness, weldability, and formability further enhance its adaptability in engineering applications where both mechanical performance 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 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.
You’ll find the Stainless Steel 321H Hollow Bar widely used in chemical processing equipment, heat exchangers, pressure vessels, and the petrochemical industry, thanks to its ability to withstand high temperatures and corrosive substances. It’s an excellent choice for aerospace components, furnace parts, and automotive exhaust systems, where durability under thermal stress is vital. Additionally, it plays a key role in power generation, food processing, and pharmaceutical industries, helping to create essential components that face fluctuating temperatures and harsh conditions. Its unique blend of strength, corrosion resistance, and thermal stability makes it a go-to option for engineers and designers alike.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Semih Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Istanbul, Turkey
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