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Home > Stainless Steel Tubing > Stainless Steel 348H Tubing
Bosega Pipes and Tubes is a reliable manufacturer and supplier of Stainless Steel 348H Tubing based in Cape Town, South Africa. They provide top-notch tubing solutions designed for exceptional high-temperature strength and corrosion resistance. Stainless Steel 348H is an austenitic stainless steel grade that’s stabilized with niobium and has a higher carbon content, which enhances its creep resistance and offers excellent protection against intergranular corrosion at elevated temperatures. Bosega takes pride in their precision manufacturing, ensuring smooth finishes and consistent wall thickness, resulting in tubing that meets international standards and performs reliably in power generation, chemical processing, and other high-temperature industrial applications.
The composition of Stainless Steel 348H Tubing primarily includes iron, chromium (17–19%), nickel (9–13%), niobium, and a higher carbon content (0.04–0.10%), along with trace amounts of manganese and silicon. The niobium stabilization helps prevent carbide precipitation during welding or high-temperature use, ensuring excellent resistance to intergranular corrosion. Mechanically, it boasts high tensile and yield strength, superior creep resistance, and remarkable toughness, maintaining its structural integrity even in harsh temperatures and corrosive environments.
| 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 |
| Element | Content (%) |
|---|---|
| Iron, Fe | 66 |
| Chromium, Cr | 19 |
| Nickel, Ni | 11 |
| Manganese, Mn | 2.0 |
| Silicon, Si | 1.0 |
| Nb + Ta | 0.8 |
| Cobalt, Co | 0.2 |
| Tantalum, Ta | 0.1 |
| Carbon, C | 0.080 |
| Phosphorous, P | 0.045 |
| Sulfur, S | 0.030 |
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 655 MPa | 95000 psi |
| Yield strength (@ strain 0.200%) | 275 MPa | 39900 psi |
| Izod impact | 120 – 160 J | 88.5 – 118 ft-lb |
| Charpy impact | 160 J | 118 ft-lb |
| Shear modulus (typical for steel) | 77.0 GPa | 11200 ksi |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break (in 50 mm) | 45% | 45% |
| Hardness, Brinell (converted from Rockwell B hardness) | 147 | 147 |
| Hardness, Knoop (converted from Rockwell B hardness) | 164 | 164 |
| Hardness, Rockwell B | 85 | 85 |
| Hardness, Vickers (converted from Rockwell B hardness) | 169 | 169 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
By choosing Stainless Steel 348H Tubing from Bosega Pipes and Tubes, you are assured of superior quality and durability. These tubes provide outstanding corrosion resistance and strength, making them ideal for a wide range of industrial applications. Our dedication to excellent service and dependable delivery ensures customer satisfaction every time. With our expertise in stainless steel products, we deliver top-tier solutions customized to meet your specific requirements.
Bosega Pipes and Tubes, a leading supplier of Stainless Steel 348H Tubing in Cape Town, South Africa, provides a wide selection of premium pipes and tubes for diverse industrial applications. With a vast inventory and a strong focus on delivering outstanding service, they are the preferred choice for stainless steel products in the region.
At Bosega Pipes and Tubes, we provide custom sizes of Stainless Steel 348H Tubing to meet your exact specifications. Our dedicated team is here to offer tailored solutions for all your piping and tubing needs. For more information, feel free to reach out to us at sales@brydonpipesandtubes.co.uk.
You’ll find Stainless Steel 348H Tubing commonly used in boilers, heat exchangers, superheaters, and chemical processing equipment where high-temperature strength and corrosion resistance are crucial. It’s perfect for applications in power plants, petrochemical industries, marine settings, and furnace systems. The combination of thermal stability, durability, and resistance to stress corrosion cracking guarantees a long service life and dependable performance in demanding industrial conditions.
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