Stainless Steel 904L Hex Bars are high-alloy austenitic stainless steel products engineered for severe corrosion environments and critical industrial applications. American Metallix Steel Co. manufactures premium quality SS 904L hex bars designed to perform in aggressive chemical processing units, offshore platforms, power generation plants, and heavy structural engineering projects. These hexagonal bars are widely preferred for precision components, fasteners, and high-strength fittings where exceptional corrosion resistance and structural stability are essential. With increasing demand for durable materials in acidic and chloride-rich environments, Stainless Steel 904L Hex Bars deliver outstanding performance in both mechanical and structural applications. Their hexagonal profile provides improved grip for machining and fastening operations, making them suitable for bolts, nuts, shafts, and customized industrial components used in demanding sectors.
Stainless Steel 904L is a low carbon, high alloy austenitic stainless steel containing significant amounts of chromium, nickel, molybdenum, and copper. The typical composition includes approximately 19 to 23 percent chromium, 23 to 28 percent nickel, 4 to 5 percent molybdenum, and 1 to 2 percent copper. This unique combination enhances resistance to strong acids such as sulfuric acid and improves protection against pitting and crevice corrosion. Metallurgically, Stainless Steel 904L Hex Bars exhibit a fully austenitic microstructure that provides excellent toughness and non-magnetic properties in annealed conditions. The low carbon content reduces the risk of carbide precipitation during welding, ensuring resistance to intergranular corrosion in fabricated assemblies. The high nickel and molybdenum content significantly improves resistance to stress corrosion cracking in chloride environments. In terms of mechanical properties, these hex bars offer high tensile strength, good yield strength, and excellent elongation. They maintain performance stability under elevated temperatures and aggressive chemical exposure. Their machinability, while lower than free-machining grades, remains suitable for precision fabrication when appropriate tooling and speeds are used.
Stainless Steel 904L Hex Bars provide exceptional corrosion resistance, particularly in acidic and chloride-laden environments. This makes them highly reliable for applications in chemical plants, marine structures, and pollution control systems. The addition of copper enhances resistance to reducing acids, which is critical in fertilizer plants and sulfuric acid handling systems. Durability is another major advantage. These stainless steel hex bars are designed for long service life in extreme operating conditions. Their resistance to oxidation, pitting, and crevice corrosion reduces maintenance frequency and lowers lifecycle costs for industrial facilities.
From a structural engineering perspective, Stainless Steel 904L Hex Bars offer dependable strength and dimensional stability. They withstand heavy loads and maintain integrity in high-pressure equipment and industrial piping systems. Although the initial material cost may be higher compared to standard grades, the long-term cost efficiency comes from minimal corrosion-related failures and extended operational reliability.
In the chemical processing and fertilizer industries, Stainless Steel 904L Hex Bars Manufacturers supply high-alloy hex bars used in pumps, valves, agitator shafts, and reactor components exposed to concentrated acids. The material’s superior resistance to corrosion ensures safety and operational continuity in highly aggressive environments. For oil and gas refineries and offshore installations, Stainless Steel 904L Hex Bars Suppliers provide corrosion-resistant hexagonal bars used in fasteners, structural connectors, and pressure equipment components. The alloy’s ability to withstand chloride stress corrosion cracking makes it suitable for marine and subsea applications.
Within heavy engineering and industrial fabrication sectors, Stainless Steel 904L Hex Bars Stockists maintain ready inventory for manufacturing precision bolts, nuts, and customized fittings required in power plants, desalination units, and heat exchanger systems. Consistent quality and dimensional accuracy support efficient machining and assembly processes. For global infrastructure and industrial development projects, Stainless Steel 904L Hex Bars Exporters deliver certified materials to international markets for use in petrochemical plants, marine construction, and environmental control equipment. Proper packaging, traceability, and adherence to global specifications ensure reliable performance across diverse climates and operating conditions.
Stainless Steel 904L Hex Bars are typically manufactured in accordance with ASTM A276 and ASTM A479 specifications, which cover stainless steel bars and shapes for general engineering and pressure vessel applications. The corresponding ASME standards include ASME SA276 and ASME SA479 for use in boilers, pressure vessels, and high-temperature services. These standards define chemical composition, mechanical properties, heat treatment requirements, and dimensional tolerances. Compliance ensures that SS 904L hex bars meet the strict demands of chemical processing, power plants, and industrial piping systems where reliability and traceability are essential.
Steel products such as hex bars, round bars, pipes, tubes, plates, sheets, and coils are classified under globally recognized standards including ASTM, ASME, EN, DIN, JIS, and ISO. ASTM and ASME standards are widely used in North America and the Middle East for pressure equipment and structural engineering projects. EN and DIN standards govern European material specifications, while JIS applies to Japanese industrial grades. ISO standards ensure uniform testing procedures and quality management systems worldwide. Stainless Steel 904L is often identified by its UNS designation N08904 and equivalent EN numbers, enabling engineers and procurement specialists to accurately specify materials for fabrication, piping systems, and corrosion-resistant applications.
American Metallix Steel Co. is one of the leading manufacturer and supplier of 904L Stainless Steel ASTM A276 Round Bar, SS 904L ASME SA 276 Polished Bar, 904L SS Black Bar, 904L Stainless Steel Rods, ASTM A276 SUS 904L Round Bar, ASME SA 276 904L Bar, Round Bar, Hex Bar at the best price in India.
Request Latest Price & Stock AvailabilityStainless Steel 904L Hex Bars are manufactured according to recognized ASTM and ASME standards. They are available in random, fixed and cut lengths for various industrial, engineering and fabrication requirements.
| Specification | Details |
|---|---|
| Dimensions | ASTM, ASME |
| Standard | ASTM / ASME SA A276, A479, ASTM A493 |
| Length | Random, Fix & Cut Length |
| Size | 20MM to 150MM |
Stainless Steel 904L Hex Bars are available in sizes ranging from 20MM to 150MM. Random, fixed and cut length options are available to meet specific project and manufacturing requirements.
The chemical composition of Stainless Steel 904L Hex Bars contains controlled amounts of carbon, manganese, silicon, phosphorus, sulfur, chromium, molybdenum, nickel and copper. This balanced composition provides excellent corrosion resistance, durability and dependable industrial performance.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Cu |
|---|---|---|---|---|---|---|---|---|---|
| SS 904L | 0.020 max | 2 max | 1 max | 0.040 max | 0.030 max | 19.0–23.0 | 4.0–5.0 max | 23.00–28.00 | 1.0–2.0 |
The table lists the carbon, manganese, silicon, phosphorus, sulfur, chromium, molybdenum, nickel and copper content of Stainless Steel 904L Hex Bars. All listed values represent percentages by weight.
The mechanical properties of Stainless Steel 904L Hex Bars include density, melting point, tensile strength, yield strength and elongation. These values demonstrate their strength, durability and performance in demanding industrial environments.
| 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% |
Stainless Steel 904L Hex Bars have a density of 7.95 g/cm³, a melting point of 1350 °C, tensile strength of 490 MPa, yield strength of 220 MPa and elongation of 35%. These values may vary according to dimensions, condition and manufacturing standards.
