Louis Metals is Houston, USA-based, leading stainless steel product manufacturer and supplier with high-quality Stainless Steel 347 Round Bars and Rods for severe industrial applications. Designed for strength, corrosion resistance, and heat stability, these round bars are manufactured with the latest manufacturing technology and rigorous quality checks. Louis Metals supplies a vast cross-section of industries such as aerospace, chemical processing, and power generation with dependable and consistent stainless steel solutions. With a reputation for precision and customer satisfaction, Louis Metals guarantees its 347 round bars and rods to conform to both domestic and international performance requirements.
Stainless Steel 347 Round Bars and Rods are manufactured using a stabilized austenitic stainless steel composition with 17–19% chromium, 9–13% nickel, and columbium (niobium) as an addition to improve intergranular corrosion resistance. The composition is particularly relevant for use in high-temperature applications, providing tensile strength of approximately 485 MPa, yield strength of 170 MPa, and elongation of about 40%. The material is non-magnetic in the annealed state and has good weldability. Its thermal cycling stability and carbide precipitate resistance make it particularly suitable for continuous use in oxidizing, high-heat environments.
| Grade | C≤ | Mn | P≤ | S≤ | Si≤ | Cr | Ni | Nb |
| 347 | 0.08 | 2.0 | 0.045 | 0.03 | 0.75 | 17.0-19.0 | 9.0-13.0 | 10*C-1.0 |
| Grade | Tensile, min, ksi[MPa] | Yield, min, ksi[MPa] | Elongation, %(min) | Hardness, HB（max） |
| 347 | 75【515】 | 30【205】 | 40 | 201 |
| STANDARD | WERKSTOFF NR. | UNS | JIS | GOST | EN |
| 347 | 1.4550 | S34700 | SUS347 | 08Ch18N12B | X6CrNiNb18-10 |
Stainless Steel 347 Round Bars and Rods are particularly used in applications that require high temperature strength and corrosion resistance. The applications include heat exchangers, superheater tubes, boiler parts, pressure vessels, and welded piping systems in petrochemical, aerospace, and power generation industries. These bars are also appropriate for application in aircraft exhaust systems and thermal processing equipment. The circular cross-section is easy to machine, turn, and fabricate, making it ideal for both mechanical and structural components. Stainless Steel 347 is especially useful in welded assemblies where long-term thermal stability and resistance to intergranular attack are necessary.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Louis Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Houston, USA
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