Weston Stainless in Midland, UK, is a reputable manufacturer and supplier of premium stainless steel products to multiple industrial applications. One of its products, Stainless Steel 348H Tubing, is much appreciated for its superior strength, heat resistance, and high corrosion stability. This seamless, welded, ERW, and fabricated tubing is made from Grade 348H stainless steel, an austenitic columbium-stabilized alloy with a higher carbon content for improved performance. Its superior oxidation resistance, mechanical strength, and durability make it suitable for critical industrial applications needing reliability and extended service life.
Stainless Steel 348H Tubing consists of iron (balance), 17-19% chromium, 9-13% nickel, 0.04-0.10% carbon, columbium, and trace additions of manganese and silicon. It has a tensile strength of about 75 ksi (515 MPa), a yield strength of 30 ksi (205 MPa), and an elongation of 40%. Its physical characteristics involve a specific gravity of 7.93 g/cm³, thermal conductivity of 16.3 W/m·K, and melting point of approximately 1400°C. These characteristics provide high mechanical strength, superior thermal stability, and immunity to intergranular corrosion in high-temperature conditions.
| Sizes: | 1/8″ to 24″ |
| ASTM A312 Steel grades: | TP304/304L/304H |
| ASTM A312 Schedules: | STD, XS, XXS, SCH5S, SCH10/10S, SCH20, SCH30, SCH40/40S, SCH60, SCH80/80S, SCH100, SCH120, SCH140, SCH160 |
| Standards: | ASTM A312, ASME SA312 |
| Lengths: | SRL and DRL 5meters up to 11meters available from Stock or Production. |
| Ends: | Plain/Bevelled |
| AISI 348H Chemical Properties | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| C | Mn | P | S | Si | Cr | Ni | Cb | Co | Ta |
| 0.08 Max | 2.00 Max | 0.045 Max | 0.030 Max | 1.00 Max | 17.0-20.0 | 9.0-13.0 | 1.10 Max | 0.20 Max | 0.10 Max |
| Yeild strength | Tensile strength | Elongation | Reduction |
| Min 0.2% Mpa | Min Mpa | Min % | Min % |
| 205 | 515 | 30 | 50 |
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Stainless Steel 348H Tubing is increasingly being utilized in power generation, chemical processing, and aerospace industries owing to its high resistance to creep stress and oxidation. It is generally used in heat exchangers, boiler tubes, furnace parts, and superheater tubes. Besides that, its excellent weldability and mechanical properties also make it ideal for the transportation of fluids in petrochemical facilities, refineries, and high-pressure piping systems. Its high carbon content adds to its toughness, providing reliability and durability for long-time high-temperature industrial applications.
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Weston Stainless offers Stainless Steel 348H Tubing with test certificates, such as mill test reports (MTR), third-party inspection reports, and compliance certificates. The tubes are safely packaged in wooden crates, pallets, or protective wraps to avoid transit damage. The company makes timely global delivery through air, sea, or land transportation while ensuring product integrity and customer satisfaction through effective and secure shipping options.
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