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Home > Stainless Steel Tubing > Stainless Steel 348H Tubing
Ojas Pipes and Tubes stands out as a top manufacturer and supplier of Stainless Steel 348H tubing right in Kolkata, India. We’re all about delivering high-performance tubing solutions that can handle elevated temperatures and pressures with ease. Our expertise lies in crafting Stainless Steel 348H tubing that boasts impressive creep resistance, stability, and corrosion resistance, particularly in high-temperature settings. With cutting-edge technology and a passionate team behind us, we guarantee exceptional product quality, precise dimensions, and prompt delivery. Our tubing is essential in key industries like chemical processing, power generation, refineries, and aerospace, making Ojas Pipes and Tubes a reliable partner for all your industrial stainless steel needs.
When it comes to composition, Stainless Steel 348H tubing is made up of 17–20% chromium, 8–11% nickel, and is stabilized with niobium (columbium) to prevent carbide precipitation during welding. The “H” grade signifies a higher carbon content (0.04–0.10%), which enhances its strength at high temperatures. Its mechanical properties include a tensile strength of 515 MPa, yield strength of 205 MPa, and an elongation of about 30%. This tubing maintains its mechanical integrity even at elevated temperatures, offers good weldability, and resists intergranular corrosion, making it ideal for harsh thermal environments and continuous high-temperature operations.
| 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 Ojas 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.
Ojas Pipes and Tubes, a leading supplier of Stainless Steel 348H Tubing in Kolkata, India, 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 Ojas 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.
Stainless Steel 348H tubing finds extensive application in industries that demand stability and corrosion resistance under high temperatures. In the power generation field, it’s commonly used in boiler tubes, superheaters, and heat exchangers thanks to its remarkable creep strength and thermal stability. The chemical and petrochemical sectors utilize it for reactor tubing, catalytic converter components, and piping that comes into contact with aggressive fluids. It’s also found in aerospace and thermal processing equipment, including exhaust manifolds and radiant tubes. With its high mechanical strength and corrosion resistance, 348H tubing is designed to provide a long service life in challenging, high-temperature applications.
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