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303 Stainless Steel Bar
303 Stainless Steel Bar (UNS S30300) is a free-machining austenitic stainless steel developed for improved cutting performance. It contains added sulfur to enhance machinability, making it ideal for mass production of screws, nuts, and precision parts. While its corrosion resistance is slightly lower than Grade 304 due to higher sulfur content, it offers excellent mechanical properties and toughness. It cannot be heat treated but can be work hardened.
ASTM: A276/A479UNS: S30300GB: Y12Cr18Ni9
MaterialASTM A276 / ASTM A479 / AMS 5640 / UNS S30300
ThicknessN/A (Bar)
WidthN/A (Bar)
Length1m - 12m
MOQ1 Ton
Lead Time5-7 days for stock; 15-20 days for new production
PortShanghai / Tianjin
Response within 24 hours
In Stock — Ready to Ship
| Material Grade | ASTM A276 / ASTM A479 / AMS 5640 / UNS S30300 | Standard | ASTM A276 / ASTM A479 / AMS 5640 / UNS S30300 |
| Thickness Range | N/A (Bar) | Width Range | N/A (Bar) |
| Length Range | 1m - 12m | MOQ | 1 Ton |
| Lead Time | 5-7 days for stock; 15-20 days for new production | Port of Shipment | Shanghai / Tianjin |
| C | ≤0.15 | Si | ≤1.00 |
| Mn | ≤2.00 | P | ≤0.20 |
| S | ≥0.15 | Cr | 17.00 - 19.00 |
| Ni | 8.00 - 10.00 | Tensile Strength | ≥515 MPa |
| Yield Strength | ≥205 MPa |
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