Starc Metals stands out as a top-notch manufacturer and supplier of Stainless Steel 904L Flat Bars, proudly based in Canberra, Australia. Known for our commitment to quality, precision, and reliability, we provide premium stainless steel products that not only meet international standards but also cater to our clients’ specific needs. Our Stainless Steel 904L Flat Bars are celebrated for their exceptional corrosion resistance, impressive durability, and outstanding performance even in harsh environments. Thanks to our advanced manufacturing techniques and rigorous quality control, Starc Metals supports vital industries like chemical processing, marine, petrochemical, and power generation, delivering dependable and long-lasting solutions that prioritize safety, efficiency, and excellence in challenging industrial applications.
These Stainless Steel 904L Flat Bars are made up of about 20–23% chromium, 25–28% nickel, 4–5% molybdenum, and 1.5–2% copper, which boosts their resistance to strong oxidizing and reducing acids. This austenitic stainless steel is known for its remarkable corrosion resistance, high toughness, and good formability. In terms of mechanical properties, they boast a tensile strength of around 500–700 MPa, a yield strength of approximately 215–275 MPa, and a density of 8 g/cm³. Additionally, Stainless Steel 904L Flat Bars excel in resisting pitting, crevice corrosion, and stress corrosion cracking, making them perfect for extremely aggressive environments.
| 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 bars find extensive use in industries that demand superior corrosion resistance and mechanical strength. In chemical processing, they are perfect for heat exchangers, reactor vessels, and piping systems that handle strong acids. The marine industry relies on them for seawater equipment, desalination plants, and offshore structures due to their resistance to chloride-induced corrosion. In the petrochemical and power generation sectors, they are utilized in pumps, valves, and storage tanks. Moreover, they are essential in pharmaceutical and food processing equipment, where hygiene and resistance to harsh chemicals are paramount. Starc Metals ensures that our products meet the highest standards to support your industrial needs.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Starc Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Canberra, Australia
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