Harshita Stainless, a reputable manufacturer and supplier located in Delhi, India, specializes in top-quality Stainless Steel 348H Bars, crafted for exceptional performance in high-temperature and corrosive settings. These bars represent an upgraded version of SS 348, featuring a higher carbon content that boosts creep resistance and mechanical strength. Adhering to international standards, Harshita Stainless guarantees precision engineering, a flawless surface finish, and customizable dimensions. The company caters to various industries, including petrochemical, aerospace, chemical processing, and power generation. With a commitment to quality, timely delivery, and customer satisfaction, Harshita Stainless provides dependable and long-lasting stainless steel solutions to clients both in India and overseas.
Stainless Steel 348H bars are a high-carbon, niobium-stabilized austenitic stainless steel alloy. They consist of 17–20% chromium, 9–13% nickel, and columbium (niobium) to improve intergranular corrosion resistance. The increased carbon content (0.04–0.10%) enhances high-temperature strength and creep resistance. SS 348H bars boast a tensile strength of around 515 MPa and a yield strength of 205 MPa. Their Brinell hardness typically falls between 150–200 HB. These bars are non-magnetic when annealed and offer excellent weldability, formability, and resistance to scaling at temperatures reaching 870–900°C, making them ideal for challenging thermal environments.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| SS 348H | 0.08 max | 2 max | 0.75 max | 0.045 max | 0.030 max | 17 – 19 | – | 9 – 13 | – |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1400 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
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All Stainless Steel 348H Bars are thoroughly tested at Harshita Stainless to ensure quality and performance. Our products are certified to the international standards and tested for mechanical strength, corrosion resistance, and high-temperature durability. We provide MTC, third-party inspection reports, and international specifications for assurance.
348H round bars offer high-temperature strength and corrosion resistance, ideal for aerospace, chemical processing, and nuclear applications requiring durability and reliable performance under extreme conditions.
348H flat bars provide excellent resistance to oxidation and intergranular corrosion, suitable for heat exchangers, boiler tubes, and furnace components in high-temperature industrial environments.
348H square bars are used in high-stress applications, offering superior strength and stability for structural components in aerospace, chemical, and nuclear industries.
348H rectangular bars deliver robust performance in high-temperature environments, ideal for critical components in chemical processing equipment, heat exchangers, and nuclear reactors.
348H hexagonal bars provide excellent mechanical properties and corrosion resistance, perfect for fasteners, fittings, and other components in demanding aerospace and industrial applications.
348H T-bars offer high strength and corrosion resistance, suitable for structural support in high-temperature environments such as chemical plants and power generation facilities.
Stainless Steel 348H bars find extensive use in high-temperature and high-pressure applications where superior mechanical strength and resistance to intergranular corrosion are essential. They are commonly utilized in boiler tubes, heat exchangers, pressure vessels, and superheaters within power plants and the petrochemical sector. Additionally, they are employed in chemical processing equipment, reactor cores, and various components.
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