Njabulo Stainless is among the leading manufactures and suppliers in premium stainless steel products, that has been the pride of having clients in the South Africa, the emirate Cape Town, and in other parts worldwide. We focus on quality that is exceptional while being innovative – we specialize in Stainless Steel 348H bars for high temperature applications and greater corrosion resistance; we are serious about precision and durability and assure satisfaction to every customer. With a strong global presence and an emphasis on excellence, Njabulo Stainless is your partner of choice for stainless steel products.
Stainless steel 348H bars are a more carbon version of alloy 348, designed for increased creep resistance and superior thermal properties. It is generally used in applications that require exposure to high temperatures for extended periods of time. The composition of 348H contains 17-19% chromium, 9-13% nickel, columbium (niobium) and trace amounts of tantalum, which stabilizes the alloy and prevents carbide precipitation These properties make the alloy resistant to intergranular corrosion and oxidation face Stainless Steel 348H Generally Aerospace, Medical , used in inside nuclear reactors, where Its excellent mechanical properties and thermal resistance ensure reliable operation in harsh 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 Njabulo 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.
Due to superior heat resistance and stability, stainless steel 348H bars are employed in most high-temperature and high-corrosion environments. Components like reactor vessels, heat exchangers, and boiler tubes are fabricated using this grade of stainless steel for aerospace, chemical, and nuclear industries. They are used in making piping and equipment in hostile conditions in the oil and gas sector. It has excellent mechanical properties and oxidation resistance, so it is applicable in furnace parts, superheaters, and other industrial uses requiring strength and durability.
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