We take pride in being a top manufacturer and supplier of Stainless Steel 904L Square Bars and Rods, delivering high-quality solutions for industries that require outstanding corrosion resistance, strength, and durability. This low-carbon, high-alloy austenitic stainless steel boasts a rich blend of nickel, chromium, molybdenum, and copper, which gives it remarkable resistance to pitting, crevice corrosion, and stress corrosion cracking, even in tough environments. Our square bars and rods are meticulously crafted to ensure superior dimensional accuracy, surface finish, and mechanical properties, making them perfect for chemical processing, marine, offshore, pharmaceutical, and food industries where performance and reliability are essential.
Stainless Steel 904L Square Bars and Rods generally consist of 19–23% chromium, 23–28% nickel, 4–5% molybdenum, 1–2% copper, and a very low carbon content of less than 0.02%, with iron making up the balance. They offer impressive tensile strength ranging from 490 to 710 MPa, a yield strength of 220 MPa, an elongation of about 35%, and a hardness between 70 and 90 HRB. This alloy remains tough even in low temperatures and is non-magnetic. Its exceptional resistance to acidic and chloride-rich environments makes it a go-to choice for marine and chemical industries, while also providing excellent formability, weldability, and long-lasting structural integrity under extreme conditions.
| Specifications | : | ASTM A276, ASME SA276 / ASTM A479 ASME SA479 |
| Dimensions | : | EN, DIN, JIS, ASTM, BS, ASME, AISI |
| SS 904L Square Bars | : | Outside Diameter in the range of 4mm to 500mm |
| SS 904L Square Bars | : | 18mm ” 47mm (11/16″ to 1-3/4″) |
| Finish | : | Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish |
| Length | : | 1 to 6 Meters, Custom Cut Lengths |
| Form | : | Square, Hex (A/F), Rectangle, Billet, Ingot, Forging Etc. |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Cu | |
| SS 904L | Min | – | – | – | – | – | 19 | 4 | 23 | 1 |
| Max | 0.02 | 2 | 1 | 0.045 | 0.035 | 23 | 5 | 28 | 2 |
| Grade | Tensile strength (MPa) | Yield Strength 0.2% Proof(MPa) | Elongation (% in 50mm) | Hardness – Brinell |
| 904L | 490 | 220 | 36 | 70-150 |
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | EN | EURONORM NAME |
| SS 904L | 1.4539 | N08904 | – | 904S13 | – | X1NiCrMoCuN25-20-5 |
| SQUARES | ||
| Size(mm) | WT PER FEET IN KGS | WT PER MTR IN KGS |
| 16 | 0.62 | 2.05 |
| 18 | 0.79 | 2.59 |
| 20 | 0.76 | 2.49 |
| 22 | 1.18 | 3.87 |
| 25 | 1.52 | 5.00 |
| 28 | 1.91 | 6.27 |
| 30 | 2.19 | 7.20 |
| 32 | 2.50 | 8.19 |
| 36 | 3.16 | 10.37 |
| 38 | 3.52 | 11.55 |
| 40 | 3.90 | 12.80 |
| 45 | 4.94 | 16.20 |
| 50 | 6.10 | 20.00 |
| 56 | 7.65 | 25.08 |
| 60 | – | – |
| 65 | – | – |
| 70 | – | – |
| 75 | – | – |
| 80 | – | – |
| 90 | – | – |
| 100 | – | – |
Stainless Steel 904L Square Bars and Rods are used in most industries that demand high strength with excellent corrosion resistance. They are highly used in chemical processing plants where acids and corrosive materials are handled. In the oil and gas sector, they are used for pipelines, heat exchangers, and offshore purposes. The stainless steel 904L square bars and rods have an excellent ability to resist chloride-induced stress corrosion cracking, and thus, these bars and rods are used in marine environments. They are also used in pharmaceuticals, paper and pulp production, and in equipment for pollution control. They can be used in aerospace and architectural projects with a good performance in extreme environments.






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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