Isis Metals is a reliable manufacturer and supplier of Stainless Steel 347H Flat Bars, proudly based in Manila, Philippines. We specialize in providing top-notch stainless steel products that are designed to withstand high temperatures and resist corrosion. Our Stainless Steel 347H Flat Bars are crafted using cutting-edge manufacturing techniques and premium raw materials, ensuring they boast exceptional strength, durability, and weldability. Renowned for their resistance to intergranular corrosion, these bars excel in extreme thermal conditions. At Isis Metals, we deliver precision-engineered Stainless Steel 347H Flat Bars that comply with international standards, making them perfect for industrial, chemical, and engineering applications that demand long-lasting reliability.
Stainless Steel 347H Flat Bars are a type of stabilized austenitic stainless steel, made up of chromium (17–19%), nickel (9–13%), carbon (0.04–0.10%), manganese (2% max), silicon (1% max), and niobium (10×C–1%) for carbide stabilization. These bars showcase a tensile strength of approximately 515 MPa, a yield strength of around 205 MPa, and an elongation of 40%. They provide excellent resistance to oxidation and creep, along with good toughness and outstanding performance at elevated temperatures. Stainless Steel 347H Flat Bars retain their strength and stability even under prolonged heat exposure, making them ideal for high-stress, high-temperature applications.
Dimensions : ASTM, ASME
Standard : ASTM / ASME SA A582, A276, A564, ASTM A484, 484M
Surface : hrap, hot rolled pickled or sand blasting finished, cold drawn, polished, hairline
Range : Range – 3.17mm to 350mm dia
| Element | C | Cr | Mn | Ni | P | S | Si |
| SS 347 | 0.08 max. | 17.0 – 19.0 | 2.00 max. | 9.0-13.0 | 0.045 max. | 0.03 max. | 0.75 max. |
| SS 347H | 0.04 – 0.10 | 17.0 – 19.0 | 2.00 max. | 9.0-12.0 | 0.045 max. | 0.03 max. | 0.75 max. |
| Element | Density | Melting Range,℃ | Tensile Strength | Yield Strength | Elongation | Hardness (Brinell) |
| SS 347H | 7.96 | 1450 ℃ | 515 | 205 | 40 | 201 |
| STANDARD | WERKSTOFF NR. | UNS |
| SS 347 | 1.4961 | S34700 |
| SS 347H | 1.4550 | S34709 |
The primary alloying element in Stainless Steel 347H is niobium (Nb), which stabilizes the material against carbide precipitation during welding and high-temperature exposure. This enhances its resistance to intergranular corrosion and improves its overall high-temperature strength.
Stainless Steel 347H is most suitable for applications in the temperature range of 800°C to 1500°F (427°C to 815°C). This range allows it to maintain its strength, corrosion resistance, and stability, particularly in high-temperature environments like furnaces.
Typical dimensions of a Stainless Steel 347H flat bar range from 0.25 inches (6 mm) to 6 inches (150 mm) in thickness and 1 inch (25 mm) to 12 inches (300 mm) in width. Custom sizes are also available.
Stainless Steel 347H Flat Bars are widely utilized in industries that require both heat and corrosion resistance, especially in high-temperature settings. They are perfect for applications such as heat exchangers, furnace components, boiler tubes, pressure vessels, exhaust systems, and chemical processing equipment. Thanks to their superior strength and creep resistance, they are also employed in the petrochemical, power generation, aerospace, and refinery sectors. Additionally, these bars are used in food processing, pharmaceutical, and marine industries where stability and reliability are crucial.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Isis Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Manila, Philippines
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