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Technolloy Inc is a trusted manufacturer and global supplier of premium quality Stainless Steel 347/347H Round Bars designed to meet the demanding requirements of industrial applications. Manufactured using high-grade austenitic stainless steel, these round bars offer exceptional mechanical strength, superior resistance to intergranular corrosion, and excellent performance at elevated temperatures. Stainless Steel 347 is stabilized with niobium to resist carbide precipitation during welding, while Stainless Steel 347H contains a higher carbon content that improves creep resistance and high-temperature strength.
Stainless Steel 347/347H Round Bars are solid cylindrical metal bars manufactured from stabilized chromium-nickel stainless steel alloys specifically engineered for applications involving elevated temperatures and corrosive environments. Grade 347 contains niobium that minimizes chromium carbide precipitation, improving weldability and corrosion resistance after exposure to high temperatures. Grade 347H is a high-carbon variation developed for enhanced strength and creep resistance during prolonged service at elevated temperatures.
These properties make both grades suitable for critical engineering applications where durability, reliability, and long service life are essential. Technolloy Inc manufactures these round bars in various diameters, lengths, and customized specifications to satisfy diverse industrial requirements while complying with international quality standards.
These round bars are widely utilized in fabrication, machining, structural engineering, pressure vessels, heat exchangers, petrochemical plants, power generation facilities, food processing equipment, marine engineering, and numerous industrial manufacturing sectors requiring dependable material performance.
Stainless Steel 347/347H Round Bars provide excellent tensile strength and outstanding load-bearing capability, making them suitable for heavy-duty industrial components. Their ability to maintain structural integrity under high stress ensures dependable performance even in challenging operating conditions.
The stabilized chemical composition delivers excellent resistance to oxidation, chemical attack, intergranular corrosion, and high-temperature scaling. These characteristics significantly reduce maintenance requirements and improve component reliability in aggressive industrial environments.
Designed for extended service life, these round bars retain their mechanical properties even after prolonged exposure to elevated temperatures. Their resistance to wear, fatigue, and thermal cycling makes them an economical choice for demanding applications.
Stainless Steel 347/347H Round Bars can be machined, welded, forged, and fabricated using conventional industrial processes. Their excellent fabrication characteristics allow manufacturers to produce precision-engineered components with consistent dimensional accuracy.
Although manufactured from premium stainless steel alloys, these round bars deliver outstanding value by minimizing maintenance expenses, reducing replacement frequency, and improving operational efficiency. Their long operational life lowers the total ownership cost across industrial projects.
The combination of corrosion resistance, high-temperature stability, mechanical strength, and excellent weldability ensures dependable long-term performance in critical industrial systems. Industries choose these materials for applications where operational safety and consistent quality cannot be compromised.
Petrochemical processing facilities, refinery equipment, pressure vessels, and heat exchanger systems require materials capable of withstanding aggressive chemicals and elevated operating temperatures. Stainless Steel 347/347H Round Bars Manufacturers produce precision-engineered bars that help fabricate reliable components for these demanding industrial environments while ensuring long-term operational efficiency.
Power generation plants, boiler systems, steam pipelines, and thermal processing equipment rely on high-performance stainless steel materials to maintain safety and productivity. Stainless Steel 347/347H Round Bars Suppliers serve these industries with premium-quality products that maintain mechanical stability and corrosion resistance during continuous high-temperature operation.
Engineering workshops, fabrication companies, heavy machinery manufacturers, and industrial equipment producers require readily available materials for uninterrupted production schedules. Stainless Steel 347/347H Round Bars Stockists maintain comprehensive inventories that enable faster deliveries and support urgent manufacturing requirements across multiple industrial sectors.
International infrastructure projects, offshore engineering, marine fabrication, aerospace components, pharmaceutical equipment, and food processing industries demand certified stainless steel products that comply with global quality standards. Stainless Steel 347/347H Round Bars Exporters deliver reliable material solutions to customers worldwide while meeting stringent quality, packaging, and documentation requirements for international trade.
| Standard | ASTM A276 / A479, ASME SA276 / A479 |
|---|---|
| Designation | ASTM, ASME, AISI A 276 , SA 276, A 479, SA 479 |
| Range | 3 MM TO 350 MM DIA |
| Finish | Bright, Polish & Black |
| Form | Round, Square, Hex (A/F), Rectangle, Wire (Coil Form), Wire-mesh, Billet, Ingot, Forging Etc. |
| Application | Most commonly used in petroleum refineries, Boilers, Heat exchangers, Condensers, Pipelines, Cooling towers, Steam exhausts, Electric generation plants, On occasion will be found in fertilizer and chemical plants. |
| Grade | C% | Cr% | Mn% | Ni% | P% | S% | Si% | Nb + Ta% |
|---|---|---|---|---|---|---|---|---|
| 347 | 0.08 max | 17.0 – 20.0 | 2.0 max | 9.0 – 13.0 | 0.04 max | 0.03 max | 0.75 max | Min 10×C, Max 1.00 |
| 347H | 0.04 – 0.10 | 17.0 – 20.0 | 2.0 max | 9.0 – 13.0 | 0.03 max | 0.03 max | 0.75 max | Min 10×C, Max 1.00 |
| Grade | Tensile Strength (ksi) | Yield Strength 0.2% (ksi) | Elongation (%) in 50 mm | Hardness (Brinell) MAX | Hardness (Rockwell B) MAX |
|---|---|---|---|---|---|
| 347 / 347H | 75 (515 MPa) | 30 (205 MPa) | 40 | 201 | 95 |
Stainless Steel 347H contains a higher carbon content than Grade 347, providing improved high-temperature strength and creep resistance for elevated temperature applications.
Yes. Both grades offer excellent weldability, and the niobium stabilization minimizes carbide precipitation, improving corrosion resistance after welding.
These round bars are extensively used in petrochemical, power generation, chemical processing, marine, aerospace, pharmaceutical, and food processing industries.
Yes. These grades are specifically designed for elevated temperature service and maintain excellent mechanical properties under prolonged thermal exposure.
Yes. Technolloy Inc supplies Stainless Steel 347/347H Round Bars in customized diameters, lengths, and specifications according to customer requirements.
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