Alloy 347H (UNS S34709) Tube

Description

Alloy 347 tubing is a type of stainless steel pipe that is specifically designed to withstand high temperatures and harsh environments. It is composed of chromium, nickel, and columbium, which provide superior resistance to corrosion and oxidation. This ss tubing exhibits excellent mechanical properties, such as high tensile strength and good impact resistance. It is available in both seamless and welded forms, offering flexibility and adaptability for various applications.

Alloy 347 tube features:
1. Corrosion resistance: Alloy 347 tubing offers exceptional resistance to corrosion, making it suitable for applications involving acidic and corrosive environments.
2. High-temperature capabilities: The 347 stainless steel tubing can withstand temperatures ranging from 800°F to 1500°F (427°C to 816°C) without losing its mechanical properties, making it ideal for high-temperature applications.
3. Intergranular corrosion resistance: The addition of columbium prevents carbide precipitation during welding, eliminating the risk of intergranular corrosion.
4. Durability: S34709 heat exchanger tube exhibits high tensile strength and good impact resistance, ensuring its long-lasting performance in demanding industrial environments.

Alloy 347 tubing applications:
1. Oil and gas industry: Alloy 347 tubing is extensively used in oil refineries, offshore drilling platforms, and pipelines, where it provides resistance to corrosive fluids and high-temperature steam.
2. Chemical processing: The tubing is suitable for chemical processing plants, where it can handle corrosive chemicals and withstand extreme temperatures.
3. Petrochemical industry: Stainless steel seamless pipe 347H is commonly employed in petrochemical plants for applications such as heat exchangers, boiler tubes, and refinery equipment.
4. Power generation: ss tube a213 1.4571 is used in power plants for components such as condensers, boiler tubes, and turbine exhaust systems, where high-temperature resistance is crucial.
5. Furnace parts: Alloy 347 tubing is utilized in the manufacturing of furnace parts, such as radiant tubes and thermowells, where it can withstand high temperatures and corrosive environments.
6. Exhaust systems: Due to its resistance to oxidation and high-temperature capabilities, alloy 347 tubing from Hengyang is suitable for exhaust systems in various industries.

Austenitic steels are non-magnetic stainless steels that contain high levels of chromium and nickel and low levels of carbon. Known for their formability and resistance to corrosion, austenitic steels are the most widely used grade of stainless steel.

Main Grades: 304/L, 304H, 304LN, 321/H, 316L, 316Ti, 316H, 316LN, 316LMOD, 310S, 310H, 317L, 347H, 347HFG, 309S, 904L, S31254 (254SMO) etc.

Standards（Part）：

ASME SA213 Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes

ASTM A269 Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service

ASTM A270 Standard Specification for Seamless and Welded Austenitic and Ferritic/Austenitic Stainless Steel Sanitary Tubing

ASME SA249 Welded Austenitic Steel Boiler, Superheater, Heat Exchanger, and Condenser Tubes.

ASTM A312 Seamless and Welded Austenitic Stainless Steel Pipes

ASTM A511 Standard Specification for Seamless Stainless Steel Mechanical Tubing and Hollow Bar

JIS G3463

JIS G3459

GOST 9941-81

DIN 17456-8599

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