Weston Stainless, established in Midland, UK, is a major manufacturer and supplier of premium-quality stainless steel products, providing robust and corrosion-proof solutions to many industries. Of its flagship products, Stainless Steel 348H Bars are widely appreciated for their exceptional strength, high-temperature resistance, and superior corrosion stability. These bars, with round, square, hexagonal, and flat forms, are produced from columbium stabilized austenitic Grade 348H stainless steel, which contains a higher concentration of carbon to improve performance. Their superior mechanical properties and resistance to oxidation also make them best suited for critical industrial uses.
Stainless Steel 348H Bars are composed of iron (balance), 17-19% chromium, 9-13% nickel, 0.04-0.10% carbon, columbium, and trace elements such as manganese and silicon. They have a tensile strength of approximately 75 ksi (515 MPa), a yield strength of 30 ksi (205 MPa), and an elongation of 40%. Their physical characteristics are a density of 7.93 g/cm³, a thermal conductivity of 16.3 W/m·K, and a melting point of approximately 1400°C. The composition provides great thermal stability, oxidation resistance, and mechanical strength in high-temperature applications.
| 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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Stainless Steel 348H Bars are applied in aerospace, chemical processing, and power generation industries owing to their great high-temperature corrosion and creep stress resistance. They are typically used in heat exchanger parts, furnace components, boiler tubes, and nuclear reactor uses. Moreover, their high strength and weldability also qualify them for the production of structural parts, shafts, and fasteners in high-pressure and high-temperature industrial conditions. Their thermal stability at high temperatures provides durability and reliability in harsh working conditions.
High-temperature strength and corrosion resistance, ideal for aerospace, chemical processing, and nuclear applications requiring durability and reliable performance under extreme conditions.
Provide excellent resistance to oxidation and intergranular corrosion, suitable for heat exchangers, boiler tubes, and furnace components in high-temperature industrial environments.
Used in high-stress applications, offering superior strength and stability for structural components in aerospace, chemical, and nuclear industries.
Robust performance in high-temperature environments, ideal for critical components in chemical processing equipment, heat exchangers, and nuclear reactors.
Excellent mechanical properties and corrosion resistance, perfect for fasteners, fittings, and other components in demanding aerospace and industrial applications.
High strength and corrosion resistance, suitable for structural support in high-temperature environments such as chemical plants and power generation facilities.
Weston Stainless offers Stainless Steel 348H Bars with test certificates such as mill test reports (MTR), third-party inspection reports, and conformity certifications. The bars are properly packaged in wooden crates, pallets, or protective covers to avoid damage during transportation. Weston Stainless delivers products promptly worldwide using air, sea, or land transportation, ensuring product integrity and customer satisfaction through effective and secure shipping solutions.
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