Maduka Metals, a leading manufacturer and supplier located in Abuja, Nigeria, specializes in high-quality Stainless Steel 904L Flat Bars that are designed for exceptional corrosion resistance, strength, and durability. These flat bars are crafted to meet international standards, ensuring they perform consistently well in tough environments like chemical, marine, petrochemical, and industrial applications. Maduka Metals caters to a wide range of industries, including aerospace, power generation, pharmaceuticals, and desalination, providing cutting-edge stainless steel solutions. With a focus on precision manufacturing and strict quality control, each Stainless Steel 904L Flat Bar boasts impressive mechanical properties, long-lasting reliability, and resistance to pitting, stress corrosion, and oxidation, making them perfect for critical structural and high-performance components.
Stainless Steel 904L Flat Bars are made from a high-alloy austenitic stainless steel that contains about 20–23% chromium, 25–28% nickel, 4–5% molybdenum, along with small amounts of copper and manganese. This unique composition offers remarkable corrosion resistance, especially against acids and environments rich in chlorides, while also providing excellent tensile strength, toughness, and ductility. In terms of mechanical properties, 904L flat bars have tensile strengths ranging from 500–700 MPa, yield strengths between 210–450 MPa, and can elongate up to 40%, making them well-suited for demanding industrial and marine applications.
| Standard | ASTM B649, ASME SB649 |
| Round Bar Size | 3mm~ 800mm |
| Square Bar Size | 4mm* 4mm ~100mm* 100mm |
| Flat Bar Size | 2mm ~ 100mm |
| Hex Bar Size | 2mm ~ 100mm |
| Angle Size | 3mm* 20mm* 20mm~ 12mm* 100mm* 100mm |
| Thickness | 50 mm to 6000 mm Long |
| Length | 1 To 6 Meters, Custom Cut Length |
| Form | Round, Square, Hex(A/F), Rectangle, Billet, Ingot, Forging Etc |
| Grade | Ni | Mo | Cr | Cu | C | Mn | Si | P | S |
| 904L | 23 – 28 | 4 – 5 | 19 – 23 | 1 – 2 | 0.02 max | 2.0 max | 1.0 max | 0.045 max | 0.035 max |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.05 g/cm3 | 1350 °C (2460 °F) | Psi – 71000 , MPa – 490 | Psi – 32000 , MPa – 220 | 35 % |
| STANDARD | WERKSTOFF NR. | UNS | AFNOR | JIS | BS | KS | EN |
| 904L | 1.4539 | N08904 | Z2NCUD31-20AZ | SUS 890L | 904S13 | STS 317J5L | X1NiCrMoCu25-20-5 |
Stainless Steel 904L Flat Bar is widely used in chemical processing, oil and gas, marine, pharmaceutical, and pulp and paper industries due to its exceptional corrosion resistance, particularly in acidic, chloride-rich, and high-stress environments.
Stainless Steel 904L offers superior corrosion resistance compared to standard austenitic stainless steels, excelling in harsh environments with strong acids (sulfuric, phosphoric) and chloride exposure, due to its high nickel, chromium, and molybdenum content, reducing pitting and stress corrosion.
Yes, Stainless Steel 904L Flat Bar is highly suitable for marine environments due to its excellent resistance to chloride-induced pitting, crevice corrosion, and stress corrosion cracking, making it ideal for shipbuilding, seawater equipment, and coastal structural applications.
These Stainless Steel 904L Flat Bars find extensive use in industries that require materials that are durable, corrosion-resistant, and high-strength. In the chemical and petrochemical sectors, they are utilized for reactors, heat exchangers, piping systems, and storage tanks that come into contact with strong acids and chloride solutions. In marine settings, they are essential for desalination plants, offshore structures, and components used in shipbuilding. The aerospace and power generation industries also rely on 904L flat bars for structural components, high-performance machinery, and critical equipment. Additionally, they are perfect for pharmaceutical applications, ensuring reliability and performance in various 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.
Maduka Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Abuja, Nigeria
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