We take pride in being a reliable manufacturer and supplier of Stainless Steel 904L Forgings, known for their outstanding corrosion resistance and durability in tough industrial settings. This high-alloy austenitic stainless steel, with its low carbon content, is specifically engineered to withstand harsh reducing acids like sulphuric acid and to prevent chloride-induced stress corrosion cracking. Our forgings are crafted with precision to ensure excellent dimensional accuracy, strength, and reliability, all while adhering to strict quality standards. Thanks to their remarkable weldability, formability, and resistance to pitting and crevice corrosion, 904L forgings are perfect for chemical processing, marine, pharmaceutical, and offshore industries where long-lasting performance in challenging environments is crucial.
Stainless Steel 904L Forgings generally consist of chromium (19–23%), nickel (23–28%), molybdenum (4–5%), copper (1–2%), and a low carbon content (<0.02%), with iron making up the rest. This alloy boasts a tensile strength of about 490–710 MPa, a yield strength of roughly 220 MPa, and an elongation of 35%. With a hardness rating of around 70–90 HRB, it strikes a balance between high ductility and toughness. This grade excels in resisting sulphuric acid, phosphoric acid, and seawater, effectively preventing chloride stress corrosion cracking, making it ideal for aggressive chemical and marine applications where standard stainless steels may not hold up.
| 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 |
Stainless Steel 904L Forgings find extensive use in industries that demand exceptional resistance to harsh chemicals and seawater. In chemical processing facilities, they are utilized for heat exchangers, reactors, piping systems, and storage tanks. The marine sector relies on them for seawater cooling systems, propeller shafts, and components for offshore platforms. In the pharmaceutical and food industries, their non-reactive and hygienic characteristics make them perfect for handling sensitive products. They are also employed in flue gas cleaning systems, showcasing their versatility and reliability across various demanding applications.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Aiman Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Kuala lumpur, Malaysia
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