Stainless Steel 303 Round Bars are widely used in industrial, mechanical, and structural engineering environments where precision machining and corrosion resistance are essential. American Metallix Steel Co. manufactures high-quality stainless steel round bars designed for demanding fabrication and engineering applications. These bars are known for their excellent machinability, consistent dimensional accuracy, and dependable performance in aggressive industrial settings such as chemical processing units, power plants, and heavy fabrication workshops.
In sectors where components must be machined to tight tolerances, Stainless Steel 303 Round Bars offer a reliable solution. From shafts and fasteners to fittings and precision components, these bars support efficient manufacturing processes while maintaining structural integrity under moderate stress and corrosive conditions.
Stainless Steel 303 is an austenitic chromium-nickel stainless steel alloy modified with sulfur to enhance machinability. The typical chemical composition includes approximately 17 to 19 percent chromium and 8 to 10 percent nickel, with controlled sulfur content to improve cutting performance during machining. This modification makes it one of the most machinable grades within the 300 series stainless steels.
Metallurgically, Stainless Steel 303 Round Bars exhibit a stable austenitic structure that provides good toughness and non-magnetic properties in annealed conditions. The chromium content forms a passive oxide layer on the surface, offering corrosion resistance in mildly aggressive environments. While it does not provide the same level of corrosion resistance as 304 or 316 grades, it performs well in atmospheric exposure, mild chemical environments, and industrial process systems. These bars demonstrate good tensile strength, moderate yield strength, and reliable elongation properties. They are suitable for turning, milling, drilling, and threading operations, making them ideal for high-speed machining processes. Their surface finish, dimensional stability, and consistent grain structure ensure dependable performance in fabricated assemblies and mechanical components.
Stainless Steel 303 Round Bars offer a balanced combination of strength and machinability, making them cost-effective for large-scale production. Their enhanced machinability reduces tool wear, shortens production cycles, and lowers manufacturing costs without compromising structural performance. This advantage is particularly valuable in industries that produce high volumes of precision parts.
Corrosion resistance is another significant benefit. The chromium-rich composition protects against oxidation and rust in many industrial and atmospheric conditions. This ensures long-term durability in fabricated equipment, shafts, and connectors exposed to moisture and mild chemicals. The material also maintains mechanical stability across a range of temperatures. It resists scaling at elevated temperatures and retains adequate strength under moderate loads. These characteristics make it suitable for components used in pumps, valves, pressure equipment, and industrial machinery.
In addition, Stainless Steel 303 Round Bars are easy to fabricate, cut, and shape. Their consistent quality supports structural engineering projects, plant maintenance operations, and customized fabrication requirements. For buyers seeking dependable stainless steel long products with reliable supply and performance, this grade offers strong long-term value.
In the automotive and mechanical engineering sector, Stainless Steel 303 Round Bars Manufacturers play a key role in delivering precision shafts, gears, and fasteners that require high machining efficiency and consistent mechanical properties. The alloy’s machinability allows for smooth threading and shaping, which is essential for high-performance mechanical assemblies. Within the oil and gas and chemical processing industries, Stainless Steel 303 Round Bars Suppliers support the production of valve components, pump shafts, and fittings exposed to mildly corrosive environments. The material’s corrosion resistance and dimensional stability help maintain operational safety and equipment longevity.
For general fabrication and industrial maintenance, Stainless Steel 303 Round Bars Stockists ensure ready availability of various diameters and lengths required for custom machining, structural supports, and plant repair works. Immediate stock access helps reduce downtime in power plants, refineries, and manufacturing facilities. In global trade and infrastructure development projects, Stainless Steel 303 Round Bars Exporters supply engineered stainless steel long products to international markets for use in structural frameworks, marine fittings, and industrial assemblies. Reliable export packaging and compliance with international standards ensure safe transportation and consistent product quality worldwide.
Stainless Steel 202 Round Bars are commonly manufactured in accordance with ASTM A276 and ASTM A479 specifications, which define requirements for hot-finished and cold-finished stainless steel bars used in general engineering and pressure vessel applications. Under ASME standards, these materials correspond to ASME SA276 and ASME SA479 grades for use in boilers, pressure vessels, and heat exchangers. Stainless Steel 202 Round Bars are known for their cost-effective composition with manganese and nitrogen additions, offering good strength and moderate corrosion resistance. These standards ensure that Stainless Steel 202 Bars meet strict criteria for chemical composition, mechanical properties, surface finish, and dimensional tolerances suitable for structural engineering and industrial fabrication.
Steel products such as round bars, pipes, tubes, plates, sheets, and coils are classified and named based on chemical composition, mechanical properties, and application standards defined by global bodies including ASTM, ASME, EN, DIN, JIS, and ISO. For example, ASTM and ASME standards are widely used in the United States and Middle East markets for pressure equipment and industrial piping systems. EN and DIN standards govern European structural and engineering materials, while JIS standards apply to Japanese industrial specifications. ISO standards provide international harmonization for quality management and testing procedures. Stainless steel grades such as 303 and 202 are identified by their alloy series and compositional characteristics, ensuring that buyers and engineers worldwide can specify materials confidently for fabrication, piping systems, structural frameworks, and chemical processing equipment.
American Metallix Steel Co. is one of the leading manufacturer and supplier of Stainless Steel 303 Round Bars, including hot rolled, cold drawn, polished, and bright bar variants, offering consistent quality at competitive prices.
Request Latest Price & Stock AvailabilityStainless steel bars are supplied in different sizes, forms, finishes, tolerances and manufacturing conditions. Review the complete technical specifications below.
| 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: 3–800 mm |
| Stainless Steel Hex Bar Size | 2–100 mm A/F |
| SS Flat Bar Size |
Thickness: 2–100 mm Width: 10–500 mm |
| Stainless Steel Square Bar Size | 4–100 mm |
| SS Angle Bar Size | 3 mm × 20 mm × 20 mm to 12 mm × 100 mm × 100 mm |
| Hollow Bar | 32 mm OD × 16 mm ID to 250 mm OD × 200 mm ID |
| Stainless Steel Rectangular Size | 33 × 30 mm to 295 × 1066 mm |
| SS Bars Finish | Cold (bright) drawn, centreless ground, hot rolled, smooth turned, peeled, slit rolled edge, hot rolled annealed, rough turned, bright, polished, grinding, centreless ground and black |
| SS Bar Tolerance | H8, H9, H10, H11, H12, H13, K9, K10, K11 and K12, or as per clients’ requirements |
| Tempers | Tempers range from dead soft annealed to ultra spring temper |
| Rolled Stainless Steel Flat Bars Condition | Hardened and tempered, annealed |
| Cold Rolled Bar Technique | Stainless steel hot rolled, cold drawn, cold rolled, forged round bar and rod |
| Stainless Steel Round Bar Forms | 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 and forgings |
Dimensions, tolerances, finishes, forms and material conditions can be supplied according to specific industrial and project requirements.
The chemical composition of Stainless Steel 303 Round Bars includes controlled amounts of carbon, manganese, silicon, phosphorus, sulfur, chromium, molybdenum, nickel and nitrogen. These elements support reliable machining and industrial performance.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
|---|---|---|---|---|---|---|---|---|---|
| SS 303 | 0.15 max | 2 max | 1 max | 0.20 max | 0.15 min | 17.0–19.0 | – | 8–10 | – |
C: Carbon, Mn: Manganese, Si: Silicon, P: Phosphorus, S: Sulfur, Cr: Chromium, Mo: Molybdenum, Ni: Nickel and N: Nitrogen. All listed values represent percentage by weight unless otherwise specified.
The mechanical properties of Stainless Steel 303 Round Bars describe their density, tensile strength, yield strength, elongation and temperature performance for various industrial applications.
| Density | Melting Point | Tensile Strength |
Yield Strength (0.2% Offset) |
Elongation |
|---|---|---|---|---|
| 0.285 lb/in³ | – | 85,000 psi | 45,000 psi | 50% |
These values describe the density, tensile strength, yield strength and elongation of Stainless Steel 303 Round Bars. Values may vary according to dimensions, manufacturing standards and product condition.
