Harry Fittings, a top-notch manufacturer and supplier located in Houston, USA, focuses on precision-engineered Stainless Steel 348H pipe fittings that are perfect for high-temperature and corrosive environments. This particular stainless steel alloy, 348H, is a stabilized austenitic type with a higher carbon content, which boosts its creep resistance and mechanical strength when the heat is on. Harry Fittings offers a full lineup of pipe fittings, including elbows, tees, reducers, and caps, all meeting ASTM and ASME standards. These fittings are essential for industries like petrochemical, thermal processing, pharmaceuticals, and aerospace, where durability against heat, oxidation, and corrosion is crucial for lasting performance.
| STANDARD | 348H Pipe Fittings |
| EN | X5CrNiMo17-12-2 / X3CrNiMo17-13-3 |
| JIS | SUS 316L |
| BS | 316S11 / 316S13 |
| UNS | S34809 |
| WERKSTOFF NO. | 1.4546 |
| AFNOR | Z7CND17‐11‐02 |
| GOST | 03Ch17N14M3 / 03Ch17N14M2 |
Stainless Steel 348H pipe fittings from Harry Fittings are made up of 18–20% chromium, 8–11% nickel, and a bit more carbon (0.04–0.10%), all stabilized with columbium (niobium) to enhance their strength at high temperatures. This alloy is known for its impressive resistance to intergranular corrosion, oxidation, and stress corrosion cracking. On the mechanical side, 348H boasts a tensile strength of about 585 MPa, along with good ductility and excellent formability. It stays stable at temperatures exceeding 800°F (427°C), making it a great fit for high-heat applications. All fittings are manufactured according to ASTM A403 and are rigorously tested for strength, precision, and corrosion resistance under demanding conditions.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| SS 348H | 0.08 max | 2 max | 0.75 max | 0.045 max | 0.030 max | 18 – 20 | – | 8 – 10 | – |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1400 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
Harry Fittings one of the largest suppliers of Stainless Steel 348H Pipe Fittings in Houston, USA. We specialize in providing a wide range of high-quality, durable fittings for various industrial applications. Our inventory includes elbows, tees, reducers, couplings, and other essential fittings designed to offer exceptional corrosion resistance and strength. Stainless Steel 348H is known for its cost-effectiveness and excellent mechanical properties, making it ideal for industries such as construction, chemical processing, and food processing. With a commitment to customer satisfaction, timely delivery, and competitive pricing, we are the trusted choice for Stainless Steel 348H Pipe Fittings in the USA.
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 348H Pipe Fittings from Harry 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.
Stainless Steel 348H Pipe Fittings offer numerous advantages, including excellent resistance to oxidation and corrosion, even in high-temperature environments. Their stabilized composition with columbium and tantalum enhances intergranular corrosion resistance, preventing carbide precipitation during welding. These fittings exhibit superior strength, durability, and creep resistance, making them ideal for demanding applications. Additionally, they maintain structural integrity under thermal cycling, ensuring reliable performance in industries like petrochemicals, power generation, and aerospace. Easy to fabricate and weld, Stainless Steel 348H Pipe Fittings deliver long-lasting performance, reducing maintenance costs and ensuring operational efficiency.
Yes, custom sizes are available for Stainless Steel 348H 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@harryfittings.us.
| Density | Elastic Modulus | Mean Coefficient of Thermal | Thermal Conductivity | Specific Heat | Electrical Resistivity |
| (Kg/m3) | (Gpa) | Expansion(?m/m/°C) | (W/m.K) | 0-100°C | (n?.m) |
| 7.96 | 193 | 16.6 | 16.3 | 500 | 126 |
Harry Fittings’ Stainless Steel 348H pipe fittings find their place in various high-temperature chemical processing applications, including heat exchangers, superheaters, pressure vessels, and components for nuclear reactors. Thanks to their columbium stabilization, these fittings are highly resistant to carbide precipitation, allowing them to thrive in high-heat and high-stress situations without the worry of intergranular corrosion. You’ll commonly see them in refineries, power plants, aerospace systems, and thermal oxidizers, where reliability is key.
Get in touch with one of our Technical Sales Representatives to request a quote or get answers to any questions you may have.
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