Stainless Steel 347/347H Structural Steel is a high-performance austenitic stainless steel widely used in demanding industrial and structural engineering environments. Designed for strength and stability at elevated temperatures, this grade offers exceptional resistance to corrosion, oxidation, and carbide precipitation. Industries that rely on high-temperature process equipment, pressure vessels, and structural frameworks often choose this alloy because it maintains mechanical integrity even in extreme service conditions. Steel Icon Stainless Pvt. Ltd. manufactures precision-grade Stainless Steel 347/347H Structural Steel for global industries that require reliable materials for fabrication, construction, and heavy-duty engineering applications.
Structural engineers and fabrication specialists rely on Stainless Steel 347 and 347H materials when building components exposed to aggressive chemical environments and prolonged heat cycles. The stabilized alloy composition helps prevent intergranular corrosion, which is critical in applications such as power generation facilities, chemical processing units, refinery infrastructure, and high-temperature piping systems. These steels are also widely used in fabrication projects where long service life, structural reliability, and reduced maintenance costs are essential.
Stainless Steel 347/347H Structural Steel belongs to the austenitic chromium-nickel stainless steel family that is stabilized with niobium (columbium). The addition of niobium significantly improves resistance to carbide precipitation during welding or high-temperature exposure. As a result, the material maintains excellent corrosion resistance even after repeated thermal cycles. Stainless Steel 347 is typically used in moderate high-temperature environments, while the 347H variant contains higher carbon content to improve creep strength and high-temperature durability.
The metallurgical composition generally includes chromium for corrosion resistance, nickel for structural stability and toughness, and niobium for stabilization against sensitization. This balanced composition allows the steel to perform reliably in oxidizing environments, acidic process conditions, and elevated temperature applications exceeding 800°C in certain industrial systems. Its mechanical properties include high tensile strength, strong creep resistance, good ductility, and excellent weldability. These characteristics make the material suitable for fabrication processes such as machining, welding, forming, and structural assembly in industrial manufacturing plants.
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Stainless Steel 347/347H Structural Steel provides a combination of mechanical strength, corrosion resistance, and fabrication versatility that is highly valued across heavy industries. The stabilized alloy structure ensures strong resistance to intergranular corrosion, especially in welded structures exposed to high temperatures. This property significantly extends equipment lifespan in chemical processing systems, refinery units, and high-pressure environments.
The material also offers impressive resistance to oxidation and scaling, which allows it to maintain surface stability and structural integrity in thermal environments such as boilers, furnaces, and heat exchangers. Its high tensile strength and creep resistance make it suitable for structural components subjected to long-term stress at elevated temperatures.
Another advantage is machinability and fabrication flexibility. Stainless Steel 347/347H can be easily processed into bars, plates, sheets, pipes, tubes, and coils used in structural frameworks, industrial piping networks, and pressure equipment manufacturing. This versatility supports cost-efficient production and simplifies integration into complex engineering systems. With proper maintenance and correct material selection, Stainless Steel 347/347H structures deliver long service life and dependable performance across demanding industrial applications.
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Thermal and nuclear power plants require structural materials that maintain strength during continuous high-temperature operation. Stainless Steel 347/347H Structural Steel Manufacturers supply specialized structural components used in boiler frameworks, heat exchanger supports, turbine casings, and high-temperature piping systems. These materials perform reliably under thermal stress while maintaining corrosion resistance in steam and combustion environments.
Chemical processing facilities often involve corrosive fluids, acids, and high-pressure reactors that demand stable structural materials. Stainless Steel 347/347H Structural Steel Suppliers provide corrosion-resistant plates, pipes, and fabricated structural sections used in reactors, pressure vessels, distillation columns, and heat transfer systems. The stabilized composition helps prevent intergranular corrosion in welded structures exposed to aggressive chemical media.
Heavy engineering industries rely on robust stainless steel structures for manufacturing equipment and processing systems. Stainless Steel 347/347H Structural Steel Stockists maintain ready inventory of bars, plates, and structural sections used in fabrication workshops, industrial frameworks, pressure equipment manufacturing, and structural assemblies for mechanical engineering projects. The material’s strength and machinability make it suitable for customized fabrication requirements.
Large infrastructure and engineering projects often require reliable stainless steel materials delivered to international markets with strict quality standards. Stainless Steel 347/347H Structural Steel Exporters distribute certified materials to industries including power plants, offshore platforms, chemical processing facilities, and refinery construction projects worldwide. Global buyers rely on these materials for structural stability, corrosion resistance, and consistent metallurgical performance.
Stainless Steel 347/347H Structural Steel in United States, Stainless Steel 347/347H Structural Steel Manufacturers in United States, Stainless Steel 347/347H Structural Steel Suppliers in United States, Stainless Steel 347/347H Structural Steel Stockists in United States, Stainless Steel 347/347H Structural Steel Exporters in United States
Stainless Steel 347 and 347H Structural Steel products are manufactured according to internationally recognized ASTM and ASME standards to ensure quality, safety, and compatibility with industrial engineering systems. ASTM A240 and ASME SA240 standards typically apply to stainless steel plates, sheets, and strips used in pressure vessels and structural fabrication. For pipes and tubes, standards such as ASTM A312 and ASME SA312 are commonly followed for seamless and welded stainless steel piping. Bars and structural components are often produced according to ASTM A276 or ASTM A479 specifications. Compliance with these standards guarantees proper chemical composition, mechanical properties, dimensional accuracy, and performance reliability for critical industrial applications.
Steel products such as stainless steel bars, pipes, tubes, plates, sheets, and coils are classified according to globally recognized standards to ensure consistency across international markets. Organizations including ASTM, ASME, EN, DIN, JIS, and ISO define specifications that regulate material composition, mechanical performance, dimensional tolerances, and testing procedures. For example, ASTM and ASME are widely used in American and global pressure equipment manufacturing, while EN and DIN standards are common across European engineering industries. JIS standards govern material specifications in Japanese manufacturing sectors. These international classification systems allow engineers, procurement teams, and fabricators to identify compatible materials quickly and ensure that structural steel products meet the safety, durability, and performance requirements required in industrial construction and fabrication projects.
Steel Icon Stainless Pvt. Ltd. is one of the leading manufacturer and supplier of Stainless Steel 347 Structural Steel, SS 347H Structural Sections, ASTM A240 SS 347H Structural Beams, SS 347 Angles, Channels, and Hollow Structural Sections at the best price in India.
Request Latest Price & Stock Availability| Product Name | 347 |
|---|---|
| Brand | Steel Icon Stainless Pvt Ltd |
| Minimum Order Quantity | 1 Ton |
| Material | Stainless Steel |
| Size Range (mm) | 75 x 40 mm to 400 x 100 mm (or custom sizes) |
| Thickness (mm) | 3 mm to 25 mm |
| Finish | Hot-rolled, galvanized, or as specified by customer |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
|---|---|---|---|---|---|---|---|---|---|
| SS 347/347H | 0.015 max | 2.0 max | 0.15 max | 0.020 max | 0.015 max | 24.00 - 26.00 | 0.10 max | 19.00 - 21.00 | 54.7 min |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
|---|---|---|---|---|
| 7.9 g/cm3 | 1402 °C (2555 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 40 % |
