Smith Fittings, located in Canberra, Australia, is a trusted manufacturer and supplier of **Stainless Steel 348 pipe fittings** designed for high-temperature and corrosive service applications. Renowned for their precision fabrication and commitment to international standards, Smith Fittings delivers durable, high-performance piping solutions for various industries, including chemical processing, aerospace, power generation, and food manufacturing. Stainless Steel 348 is a stabilized austenitic stainless steel alloy that includes niobium, providing exceptional resistance to intergranular corrosion while maintaining strength even at elevated temperatures. Smith Fittings guarantees that each fitting offers long-lasting reliability, structural integrity, and performance in challenging operational conditions.
| Grades | 201, 202, 304, 304L, 304H, 309S, 309H, 310S, 310H, 316, 316TI, 316H, 316L, 316LN, 317, 317L, 321, 321H, 347, 347H, 904L |
| Type | Seamless / Welded / Fabricated |
| Bending Radius | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom |
| Size | ½”NB to 48″NB in |
| Schedule | Sch 10s, 40s, 80s, 160s, XXS. |
| Dimensions | ANSI/ASME B16.9, B16.28, MSS-SP-43. |
Stainless Steel 348 Pipe Fittings are columbium-stabilized austenitic stainless steels, celebrated for their resistance to intergranular corrosion and impressive mechanical properties at elevated temperatures. The typical composition includes Chromium (17-19%), Nickel (9-13%), Columbium/Tantalum (10x C minimum), and low Carbon (≤0.08%). These fittings are known for their excellent weldability and superior creep strength. Their mechanical properties boast a minimum tensile strength of 515 MPa, yield strength of 205 MPa, and an elongation of 35-40%. Thanks to their enhanced thermal stability, they are perfect for high-temperature applications, particularly where carbide precipitation needs to be avoided during welding or extended heat exposure.
| 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 | 0.60-1.00 |
| Carbon, C | 0.080 |
| Phosphorous, P | 0.045 |
| Sulfur, S | 0.030 |
| Properties | Metric | Imperial |
|---|---|---|
| Density | 8 g/cm3 | 0.289 lb/in³ |
| Melting point | 1427°C | 2600°F |
**Stainless Steel 348** is an austenitic stainless steel alloy that’s stabilized with niobium (or columbium), which helps prevent carbide precipitation during welding and extended exposure to high temperatures. Its composition is quite similar to 304, but with the added benefit of niobium, enhancing its high-temperature strength and resistance to intergranular corrosion. This alloy boasts excellent mechanical properties, including impressive tensile strength, ductility, and oxidation resistance, making it suitable for environments reaching up to 870°C without compromising corrosion resistance or mechanical integrity.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Stainless Steel 348 Pipe Fittings from Smith Fittings offer exceptional corrosion resistance, especially in seawater and harsh environments. They are known for their high strength, durability, and resistance to pitting and crevice corrosion, ensuring long-lasting performance. We provide precise manufacturing, quality control, and reliable service for diverse industrial applications.
| 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 |
**Stainless Steel 348 pipe fittings** are frequently utilized in high-temperature and high-pressure settings, such as heat exchangers, chemical processing systems, reactor vessels, food processing equipment, and aerospace components. Their corrosion resistance and thermal stability make them perfect for piping systems that encounter strong acids, extreme heat, and frequent temperature fluctuations. These fittings ensure secure, leak-resistant connections, promoting system reliability and safety. With minimal maintenance needs and a long service life, Stainless Steel 348 pipe fittings are the go-to choice for critical infrastructure and industrial systems.
Yes, custom sizes are available for Stainless Steel 348 Pipe Fittings to meet specific requirements. We offer tailored solutions to ensure precise fit and performance for various applications. For more information, please contact us at sales@smithfittings.com.
| Properties | Metric | Imperial |
|---|---|---|
| Thermal expansion co-efficient ( @ 0-100°C/32-212°F) | 17.3 µm/m°C | 9.61 µin/in°F |
| Thermal conductivity (@ 100°C/212°F) | 16.3 W/mK | 113 BTU in/hr.ft².°F |
Stainless Steel 348 Pipe Fittings find extensive use in scenarios that demand high-temperature strength and exceptional corrosion resistance. Industries such as chemical processing, oil and gas, refineries, power generation, and aerospace depend on these fittings for their durability and performance under thermal stress. They are frequently utilized in exhaust systems, heat exchangers, furnace components, pressure vessels, and welded boiler tubes. The columbium stabilization in 348 ensures excellent resistance to intergranular corrosion, making them ideal for welded applications that are subjected to prolonged heat.
Get in touch with one of our Technical Sales Representatives to request a quote or get answers to any questions you may have.
©2024 Smith Fittings. All Rights Reserved.
