At Namo Alloy, we are premier suppliers of high-quality Stainless Steel 304 and 316 Round, Hex, and Square Bars. Engineered for superior machinability and corrosion resistance, our bars are the top choice for CNC machining, high-strength fasteners, pump shafts, and hydraulic components. While Grade 304 bars offer excellent general-purpose durability, our Grade 316 bars provide enhanced resistance to chemical pitting, making them ideal for pharmaceutical and marine applications. We provide bars in various conditions, including Cold Drawn, Centerless Ground, and Polished, ensuring strict dimensional tolerances (h8, h9, h11). Every bar in our stock is 100% mill-certified to ASTM A276 and A479 standards, guaranteeing consistent hardness and internal structural soundness.
| Grade | C (Max) | Mn (Max) | P (Max) | S (Max) | Si (Max) | Cr (Chromium) | Ni (Nickel) | Mo (Moly) |
|---|---|---|---|---|---|---|---|---|
| SS 304 | 0.08% | 2.00% | 0.045% | 0.030% | 1.00% | 18.0 - 20.0% | 8.0 - 10.5% | - |
| SS 316 | 0.08% | 2.00% | 0.045% | 0.030% | 1.00% | 16.0 - 18.0% | 10.0 - 14.0% | 2.00 - 3.00% |
| SS 316L | 0.030% | 2.00% | 0.045% | 0.030% | 1.00% | 16.0 - 18.0% | 10.0 - 14.0% | 2.00 - 3.00% |
| Grade | Tensile Strength (MPa) min. | Yield Strength (MPa) min. | Elongation (%) min. | Hardness (Brinell) max. | Hardness (Rockwell B) max. |
|---|---|---|---|---|---|
| SS 304 | 515 MPa | 205 MPa | 40% | 201 HB | 92 HRB |
| SS 316 | 515 MPa | 205 MPa | 40% | 217 HB | 95 HRB |
| SS 316L | 485 MPa | 170 MPa | 40% | 217 HB | 95 HRB |
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Specifications / Standards
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ASTM A276 / ASME SA276 ASTM A479 / ASME SA479 EN 10088-3 DIN 1013 / DIN 17440 UNS S30400 / S31600 / S31603 |
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Available Profiles
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Round Bars Hexagonal Bars Square Bars Bright Bars Flat Bars / Rectangular Bars |
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Size Range
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Round Bars: 3mm to 600mm Diameter Hex Bars: 4mm to 100mm (A/F) Square Bars: 4mm to 150mm (Custom forged bars available for heavy industrial shafts up to 1000mm) |
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Tolerance Standards
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h8 / h9 Tolerance (Bright Finish)
h10 / h11 Tolerance (Hot Rolled)
k12 / DIN 1013
Strict straightness maintained for high-speed CNC machining. |
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Supply Condition
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Cold Drawn (Bright) Centerless Ground Rough Turned (Peeled) Solution Annealed & Strain Hardened |
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Surface Finish
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Black Mill Finish Bright / Polished (Grit 240/320) Smooth Turned & Burnished Pickled Finish |
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Testing & Certificates
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EN 10204 3.1 MTC Positive Material Identification (PMI) Ultrasonic Testing (UT) per ASTM A388 Mechanical, Tensile & Hardness Testing Macro/Micro Structure Analysis |
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Export Packaging
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Individual Plastic Sleeves (for Bright Bars) Bundle in HDPE / Jute Wrap Wooden Cases / Euro-pallets Color Coded Ends for easy grade identification |
Namo Alloy is a leading stockist and global exporter of premium Stainless Steel, Carbon Steel, and High Nickel Alloys.
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