Stainless Steel 303 Hex Bars and Rods are highly regarded for their outstanding machinability, robust strength, and solid corrosion resistance in moderate environments. As a free-machining austenitic stainless steel, SS 303 is designed to provide exceptional cutting and forming capabilities, making it perfect for high-speed production and precision machining tasks. These hexagonal bars and rods boast impressive dimensional accuracy and are commonly used to create components that require tight tolerances. Their well-balanced properties, ease of fabrication, and reliable stability make them ideal for applications in automotive, aerospace, electronics, and general engineering, where efficiency and precision are key.
Stainless Steel 303 Hex Bars and Rods are made up of chromium, nickel, and a controlled amount of sulfur, which significantly enhances their machinability. With a typical makeup of 17–19% chromium, 8–10% nickel, and sulfur to boost cutting performance, SS 303 offers excellent workability, although it has slightly lower corrosion resistance compared to 304. This material provides a tensile strength of about 620 MPa and a yield strength of roughly 240 MPa, along with good elongation properties. Its stability during machining, consistent hardness, and non-magnetic nature when annealed make it a great choice for producing precision parts.
Dimensions : ASTM, ASME
Standard : ASTM / ASME SA A276, A479, ASTM A493
Length : Random, Fix & Cut Length
Size : 20MM to 150MM
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| Stainless Steel 303 | 0.15 max | 2 max | 1 max | 0.20 max | 0.15 min | 17.0-19.0 | – | 8 – 10 |
| Element | Tensile Strength | Yield Strength | Elongation | Reduction in Area | Hardness |
| SS 303 | Psi – 85,000 | Psi – 45,000 | 50% | 55% | Rb 180 |
| Element | Density, lb/in3 | Modulus of Elasticity, psi | Linear Expansion, 68-212°F, /°F | Thermal Conductivity, Btu/ft hr°F | Heat Capacity, Btu/lb°F | Electrical Resistivity, Ω-inch |
| SS 303 | 0.285 | 29 x 106 | 9.4 x 10-6 | 8.7 | 0.12 | 27.6 x 10-6 |
| HEXAGONS | ||
|---|---|---|
| Size(mm) | WT PER FEET IN KGS | WT PER MTR IN KGS |
| 16 | 0.55 | 1.79 |
| 18 | 0.69 | 2.27 |
| 20 | 0.85 | 2.80 |
| 22 | 1.03 | 3.39 |
| 25 | 1.33 | 4.38 |
| 28 | 1.67 | 5.49 |
| 30 | 1.92 | 6.30 |
| 32 | 2.19 | 7.17 |
| 36 | 2.77 | 9.07 |
| 38 | 3.08 | 10.11 |
| 40 | 3.41 | 11.20 |
| 45 | 4.32 | 14.18 |
| 50 | 5.34 | 17.50 |
| 56 | – | – |
| 60 | – | – |
| 65 | – | – |
| 70 | – | – |
| 75 | – | – |
| 80 | – | – |
| 90 | – | – |
| 100 | – | – |
Stainless Steel 303 offers excellent machinability due to sulfur addition, good corrosion resistance, high toughness, and decent strength. It's ideal for precision machining, retaining mechanical properties while being easily cut.
Stainless Steel 303 has superior machinability due to added sulfur but slightly reduced corrosion resistance compared to 304 or 316. It balances easy machining with moderate corrosion resistance for non-critical environments.
Common finishes for Stainless Steel 303 hex bars/rods include polished, brushed, and matte finishes. Treatments like passivation improve corrosion resistance, while electropolishing enhances durability and appearance. Protective coatings and bead blasting offer additional surface refinement options.
You’ll often find Stainless Steel 303 Hex Bars and Rods being used to manufacture precision fasteners, nuts, bolts, shafts, fittings, connectors, and various threaded components. Their superb machinability makes them a go-to option for CNC machining, automatic lathes, and mass-production settings. These bars and rods are utilized in automotive systems, aerospace components, instrumentation devices, food processing equipment, marine hardware, and industrial machinery. Their ability to maintain accuracy, endure mechanical stress, and deliver smooth machining results makes them perfect for detailed engineering applications that demand consistent and reliable performance.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Hemi Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Hamilton New Zealand
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