Home > Pipe Fittings > Stainless Steel 347 Pipe Fittings
Harsh Metalloys, a prominent manufacturer and supplier located in Mumbai, India, focuses on producing top-notch Stainless Steel 347 Pipe Fittings that are specifically crafted for high-temperature and corrosive environments. These fittings are made from stabilized austenitic stainless steel infused with niobium (columbium), which helps them resist intergranular corrosion and carbide precipitation, ensuring they last and maintain their structural integrity even when subjected to thermal cycling. Adhering to ASTM A403 and ASME standards, these pipe fittings come in various forms, including elbows, tees, reducers, and couplings. They are perfect for demanding sectors like petrochemical, chemical processing, power generation, and oil & gas, where reliable, corrosion-resistant connections are essential.
Stainless Steel 347 Pipe Fittings are composed of 17–20% Chromium and 9–13% Nickel, with Niobium stabilization (Nb ≥ 10xC) to prevent carbide precipitation and intergranular corrosion. The high carbon content of the alloy boosts its creep strength and performance at elevated temperatures. These fittings showcase a tensile strength ranging from 515 to 690 MPa, along with impressive oxidation resistance and stability up to 870°C. They are non-magnetic when annealed and provide good weldability, toughness, and resistance to scaling. Their mechanical properties remain consistent even under prolonged exposure to heat and corrosive 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. |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| SS 347 | 0.10 max | 2.0 max | 0.75 max | 0.045 max | 0.03 max | 18 – 20 | – | 8 – 10.5 | – |
| Density | 8.0 g/cm3 |
| Melting Point | 1400 °C (2550 °F) |
| Tensile Strength | Psi – 75000 , MPa – 515 |
| Yield Strength (0.2%Offset) | Psi – 30000 , MPa – 205 |
| Elongation | 35 % |
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We ensures the highest standards for stainless steel 347 pipe fittings through rigorous testing and certification. Each component undergoes detailed inspection, including dimensional testing, mechanical testing and corrosion resistance assessment. Our fittings are certified according to international standards, ensuring reliability, durability and efficiency for a variety of industrial applications.
When it comes to Stainless Steel 347 Pipe Fittings, you’re looking at a fantastic option for intergranular corrosion resistance and durability. These fittings are perfect for connecting pipes in high-temperature, chemical, and industrial settings.
SS 347 Butt Weld Pipe Fittings are designed to create strong, leak-proof joints that resist corrosion, making them a great fit for high-pressure systems in the oil, gas, and power industries.
For smaller diameter, high-pressure lines, SS 347 Socket Weld Pipe Fittings are the way to go. They provide a smooth flow path, ensure secure joint integrity, and boast impressive corrosion resistance.
If you need seamless fittings, Stainless Steel 347 Seamless Fittings deliver uniform strength and top-notch corrosion resistance, making them ideal for high-stress, high-temperature applications in chemical and refinery piping systems.
SS 347 Cross Pipe Fittings are essential for connecting four pipe sections in chemical and industrial piping systems, offering excellent corrosion resistance and the ability to handle high pressure.
Lastly, Stainless Steel 347 Tee Fittings are perfect for ensuring reliable flow division and directional changes in your piping. They come with great weldability and strong resistance to heat and corrosion.
Stainless Steel 347 Pipe Fittings are widely used in high-temperature piping systems, boilers, pressure vessels, and heat exchangers where corrosion resistance and mechanical strength are essential. Common industries include petrochemical, chemical processing, power plants, oil refineries, and aerospace sectors. These fittings are preferred in welded pipe assemblies exposed to thermal cycling, chemical attack, and oxidizing environments. Their superior resistance to intergranular corrosion and thermal fatigue makes them ideal for critical process lines, exhaust systems, and structural connections. SS 347 pipe fittings ensure leak-proof, durable joints for reliable, long-term industrial performance.
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