Stainless Steel 347 Forgings are a type of niobium-stabilized austenitic stainless steel, featuring a composition that includes chromium (17–19%), nickel (9–13%), carbon (≤0.08%), and niobium (10×C min). This unique blend enhances their resistance to intergranular corrosion, oxidation, and scaling at high temperatures. The material boasts a tensile strength of about 515 MPa, a yield strength of 205 MPa, and an elongation of 40%. Thanks to their superior creep strength, thermal stability, and ductility, Stainless Steel 347 Forgings excel under cyclic heating and cooling, ensuring they maintain their mechanical integrity and corrosion resistance even in elevated operating temperatures.
| 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. |
Stainless Steel 347 forgings have limitations in extreme temperatures above 1600°F (870°C), susceptibility to stress corrosion cracking in chloride environments, and reduced formability compared to some other stainless steel grades.
The forging temperature range for Stainless Steel 347 is typically between 2100°F (1149°C) and 2200°F (1204°C). It ensures optimal grain structure and mechanical properties for high-performance applications.
Stainless Steel 347 forgings require minimal maintenance, primarily periodic cleaning to remove contaminants. Regular inspection for corrosion or wear is recommended, along with ensuring proper lubrication for moving parts in harsh environments.
In the realms of chemical processing, power generation, aerospace, and petroleum refining, Stainless Steel 347 Forgings are widely utilized where high-temperature strength and corrosion resistance are crucial. They’re perfect for applications like exhaust manifolds, pressure vessels, heat exchangers, expansion joints, and furnace components. Additionally, these forgings find their place in boiler parts, welded fabrications, and high-pressure piping systems that function under oxidizing conditions. Their outstanding resistance to intergranular corrosion and carbide precipitation makes them a reliable choice for demanding environments.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
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