Louis Metals provides high-performance Stainless Steel 347 Bars and Rods from Houston, USA, with stabilized austenitic stainless steel solutions suitable for high-temperature and intergranular corrosion-resistant applications. Our SS 347 products conform to ASTM and ASME standards and are available in varied lengths and diameters to cater to critical applications in chemical, refinery, and power sectors.
SS 347 has 17.0–19.0% Chromium, 9.0–13.0% Nickel, and is stabilized by Columbium (niobium). It has superior resistance to intergranular corrosion and oxidation at high temperatures. Typical tensile strength is 515–750 MPa and yield strength is approximately 205 MPa. It is non-magnetic and maintains strength at elevated temperatures and is therefore well suited for welded conditions.
Standard Specification : ASTM A276, ASTM A479, ASTM A182
Specification : EN, DIN, JIS, ASTM, BS, ASME, AISI
SS 347 Bright Bars : Outside Diameter in the range of 4mm to 200mm
SS 347 Round Bars : Outside Diameter in the range of 4mm to 500mm
SS 347 Flat Bars : 1 / 2” to 10” in thickness range of 1.6mm to 150mm, Custom Size Stainless Steel Flats available
SS 347 Square Bars : 3mm – 100mm
SS 347 Hex Bars : 4mm – 101.6mm
Length : 1 to 6 Meters, Custom Cut Lengths
Finish : Matt Finish, Bright Polished, Black, NO.4 Finish, Rough Turned, BA Finish
Our SS 347 Round bars conforms to NACE MR0175/ISO 15156
Form : Round, Square, Hex (A/F), Rectangle, Billet, Ingot, Forging Etc.
| Grade | Mn | C | P | Si | Cr | S | Ni | Co + Ta | Fe |
| SS 347 | 2 maximum | 0.08 maximum | 0.045 maximum | 0.75 maximum | 17 – 20 | 0.03 maximum | 9 – 13 | 10xC min 1.00 maximum | 62.74 |
| Elongation | Density | Tensile Strength | Melting Point | Yield Strength (0.2%Offset) |
| 40 % | 8 g/cm3 | MPa – 515, Psi – 75000 | 1454 °C (2650 °F) | MPa – 205, Psi – 30000 |
| STANDARD | UNS | AFNOR | WERKSTOFF NR. | BS | JIS | GOST | EN |
| SS 347 | S34700 | – | 1.4550 | – | SUS 347 | 08Ch18N12B | X6CrNiNb18-10 |
Stainless Steel 347 Bars and Rods offer exceptional resistance to corrosion, especially in high-temperature environments. They provide excellent oxidation resistance and are highly resistant to intergranular corrosion, making them ideal for industries like aerospace, chemical processing, and power generation.
These bars and rods are perfect for use in high-temperature applications, including heat exchangers, furnace parts, chemical reactors, and equipment in industries such as aerospace, chemical processing, and power generation, where resistance to oxidation and scaling is crucial.
SS 347 Bars and Rods are applied in the applications of heat exchangers, pressure vessels, boilers, radiant superheaters, and equipment of high-temperature chemical processing. Its resistance to carbide precipitation during welding makes it ideal for use in rigorous thermal conditions. It‘s applied extensively in the aerospace, refineries, and nuclear industries.
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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