Semih Metals, Istanbul, Turkey a well-known supplier of Stainless Steel 347H Forgings. They have high strength, excellent corrosion resistance, and toughness. Stainless Steel 347H is a high-performance version of 347. It provides high-temperature oxidation resistance and resistance to intergranular corrosion. We provide 347H forgings in various dimensions and forms designed for challenging environments. These forgings are essential for applications in industries like shipbuilding, chemical plants, petrochemicals and power generation. With a strong focus on quality, we ensure reliable performance and long-lasting solutions for critical applications across multiple industrial sectors.
Stainless Steel 347H Forgings are made from a niobium-stabilized version of 347 stainless steel. Containing approximately 17-20% chromium, 9-13% nickel and small amounts of niobium and tantalum. This composition enhances resistance to carbide precipitation and high-temperature oxidation, making it suitable for elevated temperatures and aggressive environments. These forgings are widely used in marine, chemical processing, and power generation industries offering exceptional durability, strength, and corrosion resistance in demanding applications.
| Standard | ASTM A182, ASME SA182 |
| Specification | DIN, ASTM, BS and all International Standards |
| Flat bar blocks | up to 27″ width and 15,000 lbs. |
| Cylinders and sleeves | up to 50″ maximum O.D. and 65″ maximum length |
| Discs and hubs | up to 50″ diameter and 20,000 lbs. |
| Rolled, hand forged or mandrel forged rings | up to 84″ maximum O.D. and 40″ maximum length |
| Rounds, shafts and step shafts | up to 144″ maximum length and 20,000 lbs. |
| Forging Types | Impression Die Forging, Open Die Forging, Seamless Rolled Forging, Hot Forging, Cold Forging, Open die hammer forging, Impression die drop forging, Closed Die Forging, Press Forging, Upset Forging, Compression Forging, Swaging, Rotary Forging, Roll forging. |
| Grade | C | Mn | Si | P | S | Cr | N | Ni | Ti | SS 347H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 0.10 max | 9.00 – 12.00 | 4(C+N) – 0.70 max |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1457 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
Yes, Stainless Steel 347H forgings can be used for potable water applications, offering excellent corrosion resistance and durability, particularly in high-temperature systems or environments with varying water quality.
Yes, Stainless Steel 347H forgings are highly suitable for high-temperature applications due to their niobium stabilization, which enhances resistance to oxidation, thermal stress, and intergranular corrosion at elevated temperatures.
This material, Stainless Steel 347H Forgings, is typically used in companies whose industries expose to extremely hot temperatures and corrosion. These forgings are particularly valuable in marine applications, chemical processing, petrochemical industries, power generation and aerospace. Their superior mechanical properties make them ideal for manufacturing pressure vessels, heat exchangers, reactors, and piping systems. Stainless Steel 347H Forgings are a reliable choice for industries where high performance and reliability under extreme conditions are critical.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Semih Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Istanbul, Turkey
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