Semih Metals, based in Istanbul, Turkey, stands out as a top manufacturer and supplier of Stainless Steel 904L Forgings, providing high-quality stainless steel solutions designed for critical applications. Using advanced forging techniques and adhering to strict quality standards, these forgings are prized for their exceptional strength, precise dimensions, and remarkable resistance to corrosion. Semih Metals guarantees reliable performance across all its products, catering to industries like chemical processing, marine, oil and gas, and power generation. With a solid reputation for precision and durability, the company has established itself as a trusted provider of stainless steel forgings for industrial applications worldwide.
Stainless Steel 904L Forgings are made up of iron, chromium (19–23%), nickel (23–28%), molybdenum (4–5%), and copper (1–2%), all while maintaining a low carbon content. This high-alloy mix offers impressive resistance to reducing acids, pitting, crevice corrosion, and stress cracking caused by chlorides. On the mechanical side, 904L boasts excellent tensile and yield strength, toughness, and good formability. The low carbon content helps prevent carbide precipitation during welding, which keeps corrosion resistance intact. The forging process enhances the grain structure and mechanical reliability, making these products perfect for high-stress environments where durability and corrosion resistance are crucial.
| 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 | MO | Ni | Cu | |
| 904L | min. | – | – | – | – | – | 19.0 | 4.0-5.0 | 23.0 | 1.0 |
| max. | 0.20 | 2.0 | 1.0 | 0.045 | 0.035 | 23.0 | 28.0 | 2.0 | ||
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 7.95 g/cm3 | 1350 °C (2460 °F) | Psi – 71000 , MPa – 490 | Psi – 32000 , MPa – 220 | 35 % |
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | KS | AFNOR | EN |
| SS 904L | 1.4539 | N08904 | SUS 904L | 904S13 | STS 317J5L | Z2 NCDU 25-20 | X1NiCrMoCu25-20-5 |
Yes, Stainless Steel 904L can be forged into custom shapes. Through advanced forging techniques, it can be shaped into various configurations to meet specific design and performance requirements for different applications.
Stainless Steel 904L forgings require minimal maintenance. Regular cleaning with mild detergents, periodic inspections for corrosion, and avoiding high-temperature exposure to chloride-rich environments ensure optimal performance and longevity.
Yes, Stainless Steel 904L forgings can be customized for specific applications. They can be tailored in size, shape, and finish to meet unique requirements, ensuring optimal performance in various industries.
Stainless Steel 904L Forgings find their place in industries that require long-lasting performance in harsh, corrosive, and high-temperature settings. They are commonly used in chemical processing equipment, marine applications, offshore oil and gas platforms, heat exchangers, and seawater cooling systems. Their outstanding resistance to acids and chlorides makes them a great fit for the pulp and paper industry, pharmaceutical facilities, and pollution control systems. Additionally, they are utilized in flanges, fittings, shafts, valves, and pressure vessels.
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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