MERIH STAINLESS is a well-respected manufacturer and supplier located in Istanbul, Turkey, known for its top-notch stainless steel products. With a strong commitment to quality and innovation, the company provides high-performance materials for a variety of industrial sectors. Among its extensive product lineup, the Stainless Steel 347H Bars are particularly notable for their durability and ability to withstand high temperatures. By utilizing advanced manufacturing techniques and rigorous quality control, MERIH STAINLESS guarantees that every product meets international standards. With a dedication to excellence and customer satisfaction, the company has built a solid reputation in both local and global markets for dependable stainless steel solutions.
Stainless Steel 347H Bars are mainly made up of iron, chromium (17–20%), nickel (9–13%), and a maximum of 0.10% carbon, with columbium (niobium) added for improved stabilization. This alloy is specifically engineered for high-temperature applications, providing outstanding resistance to intergranular corrosion. Its mechanical properties include a minimum tensile strength of about 515 MPa, a yield strength of at least 205 MPa, and an elongation of 40% at minimum. With a maximum Brinell hardness of 217, these bars are perfect for environments that demand strength, oxidation resistance, and long-lasting durability under thermal stress.
| Specifications | ASTM A276 / ASME SA276 |
| Dimensions | ASTM, ASME |
| Range | 3.17 MM TO 350 MM DIA |
| Diameter | 25mm to 152mm |
| Length | 1 to 6 Meters, Custom Cut Length |
| Finish | Bright, Polish & Black |
| Form | Round, Square, Hex (A/F), Rectangle, Wire (Coil Form), Wiremesh, Billet, Ingot, Forging |
| Condition | Cold Drawn & Polished Cold Drawn, Centreless Ground & Polished |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 347H | min. | 0.04 | – | – | – | – | 17.0 | 3.00 | 9.0 | – |
| max. | 0.10 | 2.0 | 1.00 | 0.045 | 0.030 | 19.0 | 4.00 | 13.0 | – | |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 347H | 515 | 205 | 40 | 92 | 201 |
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At Merih Stainless quality matters. Our Stainless Steel 347H Bars undergo rigorous testing, including tensile strength hardness, corrosion resistance tests so as to be in international standards. We have credible agencies certified thus we furnish material test certificates (MTCs) and third-party inspections. Ensuring reliability and unmatched performance in critical industrial applications.
Stainless Steel 347H Round Bars offer excellent corrosion resistance. Available in sizes ranging from 3mm to 200mm in diameter, these bars are ideal for applications in high-temperature environments due to their stability and durability.
These bars provide outstanding resistance to corrosion and oxidation. Stainless Steel 347H Flat Bars come in thicknesses from 1mm to 50mm and widths from 10mm to 500mm, making them suitable for a variety of industrial uses.
Stainless Steel 347H Square Bars are perfect for high-stress applications. Available in sizes from 5mm to 100mm, they combine excellent mechanical properties with superior resistance to intergranular corrosion.
These bars are highly resistant to corrosion and scaling. Stainless Steel 347H Rectangular Bars are available in thicknesses from 1mm to 50mm and widths from 10mm to 500mm, ideal for structural and mechanical applications.
Stainless Steel 347H Hexagonal Bars offer excellent resistance to high temperatures and corrosion. Available in sizes ranging from 6mm to 75mm, they are widely used in the manufacturing of fasteners and other high-strength components.
These corrosion-resistant bars are available in a range of sizes. Stainless Steel 347H T-Bars provide excellent mechanical strength and are ideal for structural applications requiring high resistance to oxidation and corrosion.
Stainless Steel 347H Bars find extensive use in high-temperature and corrosive settings due to their exceptional stability and creep resistance. They are commonly used in heat exchangers, furnace components, boilers, chemical processing equipment, and superheater tubes in power plants. The alloy’s resistance to intergranular corrosion makes it particularly suitable for petrochemical and refinery operations, especially in processes that involve continuous high heat. Additionally, 347H is widely utilized in the aerospace, oil & gas, and marine industries.
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