Located in Chennai, India, Vinit Stainless is a well-known manufacturer and supplier of premium stainless steel 348 bars designed for demanding industrial applications. These bars are composed of austenitic stainless steel stabilised with niobium, which offers exceptional performance at high temperatures and exceptional resistance to intergranular corrosion. At Vinit Stainless, we guarantee dimensional accuracy, longevity, and reliable performance by using sophisticated manufacturing processes and strict quality control. Our SS 348 bars are available in a range of sizes and finishes to meet the requirements of industries like heat treatment, power generation, chemical processing, and aerospace. They also meet international standards.
Stainless steel 348 bars are stabilised with columbium (niobium), which improves resistance to intergranular corrosion and stops carbide precipitation during welding. They are made up of 17–19% chromium and 9–13% nickel. These bars offer outstanding mechanical qualities and stability at high temperatures, with tensile strengths ranging from 515 to 750 MPa and yield strengths of about 205 MPa. Up to 800°C is the service temperature at which SS 348 retains its strength and resistance to oxidation. It is a dependable material for structural and pressure-bearing applications because it is highly formable, weldable, and resistant to stress corrosion and scaling.
Element | Content (%) |
Iron, Fe | 60 |
Chromium, Cr | 23 |
Nickel, Ni | 14 |
Manganese, Mn | 2 |
Silicon, Si | 1 |
Carbon, C | 0.20 |
Phosphorous, P | 0.045 |
Sulfur, S | 0.030 |
Properties | Metric | Imperial |
Tensile strength | 620 MPa | 89900 psi |
Yield strength (@ strain 0.200%) | 310 MPa | 45000 psi |
Izod impact | 120 – 165 J | 88.5 – 122 ft-lb |
Shear modulus (typical for steel) | 77 GPa | 11200 ksi |
Elastic modulus | 200 GPa | 29008 ksi |
Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
Elongation at break (in 50 mm) | 45% | 45% |
Hardness, Brinell | 147 | 147 |
Hardness, Rockwell B | 85 | 85 |
Hardness, Vickers (converted from Rockwell B hardness) | 169 | 169 |
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Corrosion-resistant and designed for high-temperature stability, Stainless Steel 348 Round Bars are available in diameters from 0.5″ to 12″. Ideal for use in aerospace components and chemical processing equipment where strength and durability are crucial.
Stainless Steel 348 Flat Bars offer exceptional resistance to high temperatures, available in thicknesses from 0.25″ to 6″ and widths up to 12″. Perfect for structural and industrial applications requiring durability and resistance to oxidation.
Corrosion-resistant Stainless Steel 348 Square Bars come in sizes from 0.5″ to 6″ on each side. These bars are designed for applications where high strength and resistance to extreme temperatures are necessary.
Offering excellent high-temperature resistance, Stainless Steel 348 Rectangular Bars are available in dimensions from 0.5″ x 1″ to 6″ x 12″. Suitable for heavy-duty applications requiring durability and resistance to oxidation.
Stainless Steel 348 Hexagonal Bars provide superior resistance to high temperatures, available in sizes from 0.5″ to 4″ across flats. Ideal for aerospace and chemical industries where robust performance is required.
Corrosion-resistant Stainless Steel 348 T-Bars come in dimensions from 0.5″ x 0.5″ to 6″ x 6″. Suitable for structural support and high-temperature applications where strength and durability are essential.
For high-temperature, high-stress settings where corrosion resistance and structural integrity are crucial, stainless steel 348 bars are perfect. Heat exchangers, pressure vessels, superheater tubes, furnace components, and nuclear reactor parts are examples of common applications. These bars are also utilised for components subjected to corrosive media and frequent heating in the chemical processing and aerospace industries. They are appropriate for welding applications where resistance to intergranular corrosion is crucial due to their stabilisation with niobium. Because it ensures long-term performance and mechanical reliability under varying conditions, SS 348 bars are frequently selected for environments that involve thermal cycling.
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