Home > Stainless Steel > Stainless Steel 348 Pipe
Stainless Steel 348 Pipesrefer to pipes manufactured from the stainless steel alloy designated AISI 348 or UNS S34800. This alloy is a stabilized austenitic stainless steel containing columbium, delivering outstanding resistance to intergranular corrosion and oxidation at high temperatures. Stainless Steel 348 Pipes find frequent use in high-temperature settings like furnaces, heat exchangers, and thermal processing equipment, where withstanding corrosion and heat is essential. Adding columbium serves to stabilize the material against sensitization and carbide precipitation during welding and exposure to high temperatures, rendering it appropriate for extended service in elevated 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 |
| 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 |
At Koasteel, we’re proud to be the largest supplier and manufacturer in the New Zealand, delivering advanced solutions for every one of your piping requirements. With cutting-edge manufacturing facilities positioned across the New Zealand, we maintain an extensive stock of more than 25,000 tons of top-grade materials on hand and ready to ship.
Reach out to us for a fast quote tailored to your requirement.
We supply these Stainless Steel 348 Pipes in accordance with DIN, ISO, JIS or ANSI Standard.
Stainless Steel 348 Pipes serve applications as varied as the industries that use them, driven mainly by the aerospace, railway, construction and automotive industries along with petrochemical, nuclear, medical, Oil & Gas, Chemical, Pharmaceutical, Food & Beverage, Nuclear, Thermal Power plants, Paper and Pulp, marine and mining, etc.
Yes, Stainless Steel 348 Pipes can be recycled completely. Stainless steel is an extremely sustainable material that can undergo recycling over and over again without losing its natural properties. Recycling Stainless Steel 348 Pipes helps preserve natural resources, lower energy usage, and reduce environmental impact. The recycling procedure consists of melting the stainless steel scrap and reshaping it into new products, such as pipes, without sacrificing its quality or performance. As a result, Stainless Steel 348 Pipes support a circular economy by forming part of a closed-loop recycling system.
YesComposed of elements such as chromium, nickel, and columbium, Stainless Steel 348 Pipes are highly suitable for high-temperature applications. This alloy composition delivers excellent heat resistance and stability at elevated temperatures. Stainless Steel 348 Pipes can endure extreme heat without compromising their structural integrity or suffering significant degradation, making them ideal for use in settings such as high-temperature furnaces, heat exchangers, thermal processing equipment, and aerospace components. Furthermore, the alloy’s resistance to intergranular corrosion and sensitization additionally boosts its performance under high-temperature conditions, making Stainless Steel 348 Pipes a dependable choice for demanding applications.
Stainless Steel 348 Pipes may be vulnerable to galvanic corrosion when placed in contact with dissimilar metals under specific conditions. Galvanic corrosion happens when two distinct metals come into contact in the presence of an electrolyte, resulting in the faster deterioration of the less noble metal. Although Stainless Steel 348 offers corrosion resistance, it can still undergo galvanic corrosion when paired with a more reactive metal like carbon steel or aluminum. Applying proper insulation or using suitable insulating materials can help reduce galvanic corrosion risks when Stainless Steel 348 Pipes are set up in systems containing dissimilar metals.
Routine inspection and maintenance are equally important to detect and resolve any indications of galvanic corrosion at an early stage, safeguarding the durability and dependability of the piping system.
Stainless Steel 348 Pipes are typically not advised for transporting natural gas. Although they provide outstanding resistance to corrosion and high temperatures, they might not be the ideal option for natural gas applications because of possible issues with embrittlement and cracking under specific conditions. For natural gas transmission and distribution networks, carbon steel pipes or particular stainless steel grades like 304 or 316L are usually favored, as these are engineered to satisfy the requirements and standards for gas transport. Such grades deliver solid mechanical properties and corrosion resistance specifically adapted for gas pipeline uses, guaranteeing safe and dependable performance over the long haul.
Email: sales@koasteel.nz
