Rupal Metals stands out as a top manufacturer and supplier of Stainless Steel 446 Hollow Bars in Delhi, India. They specialize in providing high-quality ferritic stainless steel products designed for high-temperature and corrosive environments. Known for its heat resistance, Stainless Steel 446 offers remarkable oxidation and sulfidation resistance even at elevated temperatures. Rupal Metals supplies 446 hollow bars in a variety of sizes and custom lengths to cater to specific industry requirements. These hollow bars are perfect for applications in heat treatment furnaces, chemical processing equipment, and other industrial settings where durability, strength, and resistance to thermal fatigue and corrosion are essential.
Stainless Steel 446 Hollow Bars generally consist of Chromium (23–27%) along with minimal amounts of Carbon (≤0.20%), Manganese, Silicon, and small traces of Molybdenum and Nickel. This high-chromium ferritic alloy is known for its excellent oxidation resistance, capable of withstanding temperatures up to 1100°C. SS 446 boasts a tensile strength of around 485 MPa, a yield strength of about 275 MPa, and an elongation of roughly 20%. While it is magnetic and has moderate formability, it also resists scaling and warping under prolonged heat exposure. Although its toughness is not as high as austenitic grades, it excels in environments with sulfur-bearing gases and other harsh oxidizing conditions.
| 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 | Mo | Ni | N |
| SS 446 | 0.2 max | 1.5 max | 0.75 max | 0.040 max | 0.030 max | 23.0 – 11.5 | – | 0.50 | 0.25 – 0.10 |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 7.5 g/cm3 | 1510 °C (2750 °F) | Psi – 75,000 , MPa – 485 | Psi – 40,000 , MPa – 275 | 20 % |
| STANDARD | WERKSTOFF NR. | UNS | JIS |
| SS 446 | 1.4762 / 3 | S44600 | SUS 446 |
|
Type |
SIZES (mm) |
SIZES (Inches) |
ISO Tolerance |
|
Cold Drawn and Polish |
3.00 – 75.00 |
1/8 – 3.00 |
h8-h9-h10-h11 |
|
Cold Drawn and Ground |
10.00 – 75.00 |
5/6 – 2.50 |
h8-h9-h10-h11 |
|
Peeled and Polished |
40.00 – 150.00 |
1.50 – 6.00 |
h11, h11-DIN 1013 |
|
Peeled and Ground |
20.00 – 50.00 |
3/4 – 2.00 |
h9-h10-h11 |
SS 446 hollow bars typically contain 23-27% chromium, 1-2% silicon, 0.75% manganese, and small amounts of carbon, phosphorus, sulfur, and nickel, providing excellent resistance to high-temperature oxidation and corrosion.
Key benefits of SS 446 hollow bars include excellent high-temperature oxidation resistance, superior corrosion resistance, durability in harsh environments, and strength at elevated temperatures, making them ideal for furnace and chemical processing applications.
Stainless Steel 446 Hollow Bars find extensive use in high-temperature and corrosive industrial settings. Common applications include components for furnaces, heat exchanger tubing, kiln linings, parts for incinerators, and thermal shields. In chemical and petrochemical processing plants, they are utilized in flue gas handling systems and components that come into contact with aggressive media. The hollow bar design not only reduces weight but also enhances machining efficiency for manufacturing bushings, sleeves, rollers, and structural supports. SS 446 is also employed in power generation, metallurgy, and environmental systems where resistance to thermal fatigue is crucial.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Rupal Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Delhi, India
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