Stainless Steel 304/304L Round Bars from American Metallix Steel Co. are engineered to meet the demanding requirements of industrial fabrication, structural engineering, and mechanical processing industries worldwide. Known for their excellent corrosion resistance and dependable mechanical strength, these stainless steel round bars are widely used in pressure equipment, chemical processing units, power plants, and heavy engineering projects.
Stainless Steel 304/304L Round Bars are among the most versatile and commonly specified stainless steel long products in global markets. Their balanced chemical composition and superior forming properties make them suitable for machining, welding, and fabrication processes where performance, reliability, and long service life are essential. Whether used in shafts, fasteners, structural supports, or piping components, these bars offer consistent quality and precision.
Stainless Steel 304 and 304L are austenitic chromium-nickel stainless steels with a typical composition of approximately 18 percent chromium and 8 percent nickel. The 304L variant contains a lower carbon content, which reduces the risk of carbide precipitation during welding and improves corrosion resistance in welded structures. This makes Stainless Steel 304/304L Round Bars especially suitable for applications involving extensive fabrication and welding. Metallurgically, these grades maintain an austenitic microstructure that provides excellent toughness and ductility even at low temperatures. They are non-magnetic in the annealed condition and demonstrate strong resistance to oxidation and scaling at elevated temperatures. The chromium content forms a protective passive layer that shields the surface against corrosion in atmospheric, marine, and chemical environments.Stainless Steel 304/304L Round Bars exhibit high tensile strength, good yield strength, and impressive elongation properties. They can withstand mechanical stress while maintaining dimensional stability. Their good machinability and weldability make them ideal for manufacturing stainless steel components, industrial machinery parts, pipes, tubes, and structural assemblies.
One of the primary advantages of Stainless Steel 304/304L Round Bars is their outstanding corrosion resistance. They perform exceptionally well in environments exposed to moisture, chemicals, and industrial pollutants. This makes them a preferred choice for chemical processing plants, food processing equipment, and marine applications. Strength and durability are equally important benefits. These stainless steel bars maintain structural integrity under heavy loads and mechanical stress. Their long service life reduces maintenance costs and downtime in industrial operations, including refineries and power generation facilities. The low carbon content of 304L enhances weldability and minimizes the risk of intergranular corrosion. This characteristic supports complex fabrication processes and large structural assemblies. In addition, Stainless Steel 304/304L Round Bars are cost-effective compared to higher alloyed stainless steel grades, offering a practical balance between performance and price. Their versatility allows use in various forms, including bright bars, hot rolled bars, cold drawn bars, and precision ground bars. This flexibility supports a wide range of industrial requirements, from heavy structural frameworks to precision-machined components.
In the engineering and manufacturing sector, Stainless Steel 304/304L Round Bars Manufacturers supply high-strength material used for shafts, fasteners, couplings, and machined components. These applications demand precise tolerances and reliable mechanical performance, which these bars consistently provide. Within the chemical and petrochemical industries, Stainless Steel 304/304L Round Bars Suppliers deliver corrosion-resistant materials for valves, pumps, flanges, and pressure equipment. Their resistance to chemical attack ensures safe and long-lasting operation in aggressive processing environments.
For fabrication workshops and industrial maintenance units, Stainless Steel 304/304L Round Bars Stockists maintain ready inventory of multiple diameters and finishes. This availability supports quick turnaround for structural frameworks, support brackets, and piping assemblies used in infrastructure and energy projects. In global markets, Stainless Steel 304/304L Round Bars Exporters serve international clients across oil and gas, marine, construction, and heavy engineering sectors. These bars are exported in compliance with international quality standards, ensuring consistency in material properties and surface finish for overseas projects.
Stainless Steel 304/304L Round Bars are manufactured according to recognized standards such as ASTM A276 and ASTM A479, which specify requirements for stainless steel bars used in general and pressure vessel applications. For boiler and pressure equipment usage, the corresponding ASME grades include ASME SA276 and ASME SA479. These standards define chemical composition limits, mechanical properties, heat treatment conditions, and dimensional tolerances. Compliance ensures that Stainless Steel 304/304L Round Bars meet stringent quality benchmarks required in power plants, refineries, heat exchangers, and industrial piping systems.
Steel products including round bars, pipes, tubes, plates, sheets, and coils are classified under international standards to ensure uniformity and traceability. ASTM and ASME standards are widely followed in North America and the Middle East, while EN and DIN standards govern European markets. JIS standards apply to Japanese specifications, and ISO guidelines provide global quality management frameworks. Stainless steel grades such as 304 and 304L are designated based on their chemical composition and mechanical properties. These classification systems enable engineers, procurement managers, and fabricators to select the correct material for structural engineering, industrial fabrication, and pressure equipment applications with confidence.
American Metallix Steel Co. is one of the trusted manufacturers & suppliers of 304 Stainless Steel ASTM A276 Round Bar, SS 304L ASME SA 276 Polished Bar, 304H SS Black Bar, 304/304L/304H Stainless Steel Rods, ASTM A276 SUS 304 Round Bar, ASME SA 276 304L Bar, Round Bar, Hex Bar at the best price in India.
Request Latest Price & Stock AvailabilityStainless Steel 304/304L Round Bars are available in multiple sizes, lengths, finishes and production conditions. Review the specifications and value-added services below.
| Specification | Details |
|---|---|
| Specification | EN 10272, EN 10088-3 Grade 1.4306 |
| Standard | DIN, EN, API, ASTM, SUS, ASME, AISI, GB and UNS |
| Sizes | 3 mm to 800 mm diameter |
| Length |
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| Finish | Black, peeled, cold drawn turned, bright, grinding, smooth turned, polished, annealed, centreless ground, bright drawn and rough turned |
| Tolerances | K12, H11, H13, K11, H8, K9, H9, H10, H12 and K10 |
| Surface Finish | NO.1, NO.4, BA, HL, NO.3, 1D, 2D, 8K and 2B |
| Production Method | Rolled / Forged |
| Characteristics |
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| Value Added Services at American Metallix Steel Co. |
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| Other Available Forms | Angle, hollow, blocks, triangle, billet, I/H, precision-ground, T-bar, threaded, forging, profiles, half-round, channel, rounds, ingot, rod and rectangle |
| Export To | Saudi Arabia, Thailand, Egypt, Canada, Korea, Oman, Italy, USA, Vietnam, Ireland, Peru, Spain, Singapore, Dubai, Kuwait, Brazil, Mexico, Indonesia, Russia, Malaysia and England |
Our Stainless Steel 304L Round Bars conform to ISO 15156 / NACE MR0175 standards.
The chemical composition of Stainless Steel 304/304L Round Bars includes controlled amounts of carbon, manganese, silicon, phosphorus, sulfur, chromium, nickel and nitrogen. This composition supports corrosion resistance, strength and dependable industrial performance.
| Grade | C | Mn | Si | P | S | Cr | Ni | N |
|---|---|---|---|---|---|---|---|---|
| 304 | 0.07 max | 2.0 max | 0.75 max | 0.045 max | 0.03 max | Min: 18.0 Max: 20.0 |
Min: 8.0 Max: 10.5 |
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| 304L | 0.03 max | 2.0 max | 0.75 max | 0.045 max | 0.03 max | Min: 18.0 Max: 20.0 |
Min: 8.0 Max: 12.0 |
0.10 max |
C: Carbon, Mn: Manganese, Si: Silicon, P: Phosphorus, S: Sulfur, Cr: Chromium, Ni: Nickel and N: Nitrogen. All listed values represent percentage by weight unless otherwise specified.
The mechanical properties of Stainless Steel 304/304L Round Bars indicate their tensile strength, yield strength, elongation and hardness for different industrial applications.
| Grade |
Tensile Strength ksi (min) |
Yield Strength 0.2% ksi (min) |
Elongation % |
Hardness (Brinell) MAX |
Hardness (Rockwell B) MAX |
|---|---|---|---|---|---|
| 304 | 75 | 30 | 40 | 201 | 92 |
| 304L | 70 | 25 | 40 | 201 | 92 |
These values describe the minimum tensile strength, minimum yield strength, elongation and maximum hardness of Stainless Steel 304/304L Round Bars. Values may vary according to product dimensions, condition and manufacturing standards.
