Sahil Metals stands out as a reliable manufacturer and supplier based in Riyadh, Saudi Arabia, specializing in top-notch Stainless Steel 347H Flat Bars. These bars are crafted for exceptional strength, durability, and impressive heat resistance. With a strong focus on precision and adherence to international standards, Sahil Metals guarantees that its Stainless Steel 347H Flat Bars consistently perform well in demanding industries. Renowned for their resistance to intergranular corrosion and dependable performance at high temperatures, these flat bars are widely used in sectors like petrochemical, construction, engineering, and power generation, making them a trusted choice for critical applications.
Stainless Steel 347H Flat Bars are austenitic stainless steels that contain 17–20% chromium, 9–13% nickel, and niobium for stabilization, along with a higher carbon content compared to grade 347. This increased carbon content enhances creep strength and durability at high temperatures. They boast tensile strength ranging from 550–750 MPa and excellent yield strength, along with toughness and resistance to sensitization in heat-affected zones. These flat bars maintain their mechanical properties even under elevated thermal stress, making them ideal for extended use in high-temperature settings.
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.
You’ll find Stainless Steel 347H Flat Bars widely utilized in industries that require high strength and corrosion resistance in elevated temperature conditions. They are commonly found in boilers, heat exchangers, furnace components, power generation equipment, and chemical processing plants. Their ability to resist oxidation and intergranular corrosion makes them perfect for petrochemical refineries and thermal processing applications. Moreover, Stainless Steel 347H Flat Bars are also employed in aerospace, marine, and construction projects where reliability, toughness, and durability in extreme operating environments are crucial. Their versatility ensures they deliver long-lasting and efficient performance.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Sahil Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Riyadh, Saudi Arabia
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