Stainless Steel 304/304L Square Bars are versatile austenitic stainless steel long products widely used in structural engineering, industrial fabrication, and mechanical applications. American Metallix Steel Co. manufactures high-quality SS 304 and 304L square bars designed to meet the performance requirements of construction projects, chemical plants, power generation facilities, and heavy engineering industries. Their uniform cross-section, dimensional precision, and corrosion resistance make them ideal for load-bearing frameworks, support structures, and machined components.These stainless steel square bars are commonly selected for applications that require strength, weldability, and long service life in mildly corrosive environments. From architectural structures and fabrication assemblies to industrial equipment and pressure systems, Stainless Steel 304/304L Square Bars provide reliable mechanical performance with excellent surface finish and structural stability.
Stainless Steel 304 and 304L are chromium-nickel austenitic stainless steels containing approximately 18 percent chromium and 8 percent nickel. The 304L variant features lower carbon content, which enhances weldability and minimizes the risk of intergranular corrosion during welding operations. This makes 304L particularly suitable for welded structures and pressure equipment. Metallurgically, Stainless Steel 304/304L Square Bars possess a fully austenitic structure, offering excellent toughness and ductility across a wide temperature range. They are non-magnetic in the annealed condition and exhibit good formability, making them easy to cut, machine, and fabricate. The chromium content forms a passive oxide layer on the surface, providing effective resistance against atmospheric corrosion, moisture, and many chemical environments. These square bars demonstrate balanced tensile strength, yield strength, and elongation properties. Their mechanical stability and resistance to oxidation at moderate temperatures allow them to perform reliably in structural engineering and industrial processing systems. The consistent chemical composition and controlled manufacturing processes ensure uniform quality suitable for demanding engineering standards.
In structural and architectural projects, Stainless Steel 304/304L Square Bars Manufacturers supply precision-engineered bars for frameworks, support columns, and reinforcement structures. Their strength and clean finish make them suitable for both functional and aesthetic applications in commercial and industrial buildings. Within fabrication workshops and heavy engineering units, Stainless Steel 304/304L Square Bars Suppliers support the production of machine components, base plates, fasteners, and brackets. The material’s formability and weldability allow seamless integration into complex assemblies used in processing plants and power generation systems.
For maintenance and repair operations in chemical processing and pressure equipment facilities, Stainless Steel 304/304L Square Bars Stockists ensure consistent availability of bar sizes required for immediate fabrication and component replacement. Reliable stock access minimizes downtime in critical industrial operations. In global infrastructure and manufacturing sectors, Stainless Steel 304/304L Square Bars Exporters deliver high-grade square bars for use in oil and gas installations, water treatment plants, and industrial construction projects. Compliance with international specifications and proper documentation ensures smooth export procedures and dependable performance across international markets.
Stainless Steel 304/304L Square Bars are generally manufactured in accordance with ASTM A276, which specifies requirements for stainless steel bars and shapes used in general corrosion-resistant and high-temperature service. For pressure vessel and boiler applications, ASTM A479 and the equivalent ASME SA276 and ASME SA479 standards apply. These standards define chemical composition, mechanical properties, heat treatment conditions, and dimensional tolerances to ensure suitability for structural components, piping systems, and industrial fabrication. Adherence to these standards guarantees consistent quality, traceability, and performance in demanding environments such as refineries, chemical plants, and power stations.
Steel products including bars, pipes, tubes, plates, sheets, and coils are classified under globally recognized standards such as ASTM, ASME, EN, DIN, JIS, and ISO. ASTM and ASME standards are commonly adopted for industrial fabrication, pressure equipment, and structural engineering projects in many regions. EN and DIN standards govern European material specifications, while JIS applies to Japanese industrial classifications. ISO standards provide harmonized testing procedures and quality management systems. Stainless Steel 304 and 304L are identified by their chemical composition and performance characteristics, allowing engineers and procurement professionals to select appropriate stainless steel square bars and related products for fabrication, structural supports, and chemical processing systems.
American Metallix Steel Co. is one of the leading manufacturer and supplier of SS 303 Square Tube Supplier in India, Purchase In Bulk Or In Small Amounts of SS 303 Square Pipe, 303 SS Black Bar, 303 Stainless Steel Rods, ASTM A276 SUS 303 Round Bar, ASME SA 276 303 Bar, Square Bar, Hex Bar at the best price in India.
Request Latest Price & Stock AvailabilityStainless Steel 304/304L Square Bars are manufactured in accordance with international standards and are available in various dimensions, finishes, tempers and forms for industrial, structural and engineering applications.
| Specification | Details |
|---|---|
| SS Bar Wire Standard | ASTM A276 / A479, ASME SA276 / SA479 |
| Stainless Steel Bar Dimensions | EN, DIN, JIS, ASTM, BS, ASME, AISI |
| Stainless Steel Round Bar Size | Diameter: 3 – 800mm |
| Stainless Steel Hex Bar Size | 2 – 100mm A/F |
| SS Flat Bar Size |
|
| Stainless Steel Square Bar Size | 4 – 100mm |
| SS Angle Bar Size | 3mm × 20mm × 20mm to 12mm × 100mm × 100mm |
| Hollow Bar | 32mm OD × 16mm ID to 250mm OD × 200mm ID |
| Stainless Steel Rectangular Size | 33 × 30mm to 295 × 1066mm |
| SS Bars Finish | Cold (Bright) Drawn, Centreless Ground, Hot Rolled, Smooth Turned, Peeled, Slit Rolled Edge, Hot Rolled Annealed, Rough Turned, Bright, Polish, Grinding, Centreless Ground & Black |
| SS Bar Tolerance | H8, H9, H10, H11, H12, H13, K9, K10, K11, K12 or as per clients’ requirements |
| Tempers | Tempers range from dead soft annealed to ultra spring temper. |
| Rolled Stainless Steel Flat Bars Condition | Hardened & Tempered, Annealed |
| Cold Rolled Bar Technique | Stainless Steel Hot Rolled, Cold Drawn, Cold Rolled, Forged Round Bar, Rod |
| Stainless Steel Rounds Bar Form | Round, Rod, T-Bar, Channel Bar, Precision Ground Bar, Flat Bar, Square, Blocks, Round Rod, Rings, Hollow, Triangle, Rectangle, Hex (A/F), Threaded, Half Round Bar, Profiles, Billet, Ingot, I/H Bar, Forging etc. |
Our Stainless Steel Square Bar conforms to Standard ISO 15156 / NACE MR0175.
The chemical composition of Stainless Steel 304/304L Square Bars includes controlled amounts of carbon, chromium, manganese, nickel, phosphorus, sulfur and silicon to provide excellent corrosion resistance, weldability and strength.
| Element | C | Cr | Mn | Ni | P | S | Si |
|---|---|---|---|---|---|---|---|
| SS 304 | 0.08 max | 18.0 – 20.0 | 2.0 max | 8.0 – 11.0 | 0.045 max | 0.03 max | 1.0 max |
| SS 304L | 0.03 max | 18.0 – 20.0 | 2.0 max | 8.0 – 12.0 | 0.045 max | 0.03 max | 1.0 max |
The table shows the standard chemical composition of Stainless Steel 304 and 304L Square Bars. All values are expressed as the maximum or specified percentage by weight.
Stainless Steel 304/304L Square Bars offer an excellent combination of strength, ductility and corrosion resistance. The following mechanical properties represent the typical values under standard conditions.
| Density | Melting Point | Tensile Strength | Yield Strength (0.2% Offset) | Elongation |
|---|---|---|---|---|
| 0.285 lb/in³ | - | Psi – 85,000 | Psi – 45,000 | 50% |
The values shown above represent the typical mechanical properties of Stainless Steel 304/304L Square Bars. Actual values may vary depending on manufacturing process, dimensions and applicable material standards.
