Sichuan Liaofu Special Steel Company is one of the most experienced manufacturers and suppliers of 5160 sup9 hot rolled steel flat bar in China. With over 20 years' experience, our factory offer high quality products made in China with competitive price. Welcome to contact us for wholesale service.
5160 SUP9 hot rolled steel flat bar informations, please browse in advance
| GENERAL STEEL HOT ROLLED FLAT BAR SPECIFICATION | |||
| Width*Thickness*Longth | Width*Thickness*Longth | Wdth*Thickness*Longth | Width*Thickness*Longth |
| 20x1.5x6000mm | 30x7.25x6000mm | 50x7.5x6000mm | 80x7.5x6000mm |
| 20x2.0x6000mm | 30x7.5x6000mm | 50x7.75x6000mm | 80x7.75x6000mm |
| 20x2.2x6000mm | 30x7.75x6000mm | 50x8.0x6000mm | 80x8.0x6000mm |
| 20x2.5x6000mm | 30x9.25x6000mm | 50x9.25x6000mm | 80x9.25x6000mm |
| 20x2.75x6000mm | 30x9.5x6000mm | 50x9.5x6000mm | 80x9.5x6000mm |
| 20x3.0x6000mm | 30x9.75x6000mm | 50x9.75x6000mm | 80x9.75x6000mm |
| 20x3.25x6000mm | 40x2.0x6000mm | 50x11.5x6000mm | 80x11.5x6000mm |
| 20x3.5x6000mm | 40x2.2x6000mm | 50x11.75x6000mm | 80x11.75x6000mm |
| 20x3.75x6000mm | 40x2.5x6000mm | 60x3.0x6000mm | 80x13.5x6000mm |
| 20x4.0x6000mm | 40x2.75x6000mm | 60x3.25x6000mm | 100x2.5x6000mm |
| 20x4.5x6000mm | 40x3.0x6000mm | 60x3.5x6000mm | 100x2.75x6000mm |
| 20x4.75x6000mm | 40x3.25x6000mm | 60x3.75x6000mm | 100x3.0x6000mm |
| 20x5.25x6000mm | 40x3.5x6000mm | 60x4.0x6000mm | 100x3.25x6000mm |
| 20x5.5x6000mm | 40x3.75x6000mm | 60x4.25x6000mm | 100x3.5x6000mm |
| 20x5.75x6000mm | 40x4.0x6000mm | 60x4.5x6000mm | 100x3.75x6000mm |
| 25x2.0x6000mm | 40x4.25x6000mm | 60x4.75x6000mm | 100x4.0x6000mm |
| 25x2.5x6000mm | 40x4.5x6000mm | 60x5.0x6000mm | 100x4.5x6000mm |
| 25x2.75x6000mm | 40x4.75x6000mm | 60x5.25x6000mm | 100x4.75x6000mm |
| 25x3.0x6000mm | 40x5.0x6000mm | 60x5.5x6000mm | 100x5.25x6000mm |
| 25x3.25x6000mm | 40x5.25x6000mm | 60x5.75x6000mm | 100x5.5x6000mm |
| 25x3.5x6000mm | 40x5.5x6000mm | 60x7.25x6000mm | 100x5.75x6000mm |
| 25x3.75x6000mm | 40x5.75x6000mm | 60x7.5x6000mm | 100x7.25x6000mm |
| 25x4.0x6000mm | 40x7.25x6000mm | 60x7.75x6000mm | 100x7.5x6000mm |
| 25x4.25x6000mm | 40x7.5x6000mm | 60x8.0x6000mm | 100x7.75x6000mm |
| 25x4.5x6000mm | 40x7.75x6000mm | 60x9.25x6000mm | 100x8.0x6000mm |
| 25x4.75x6000mm | 40x9.25x6000mm | 60x9.5x6000mm | 100x9.25x6000mm |
| 25x5.0x6000mm | 40x9.5x6000mm | 60x9.75x6000mm | 100x9.5x6000mm |
| 25x5.25x6000mm | 40x9.75x6000mm | 60x11.5x6000mm | 100x9.75x6000mm |
| 25x5.5x6000mm | 40x11.5x6000mm | 60x11.75x6000mm | 100x11.5x6000mm |
| 25x5.75x6000mm | 40x11.75x6000mm | 70x4.75x6000mm | 100x11.75x6000mm |
| 30x2.0x6000mm | 50x2.5x6000mm | 70x5.25x6000mm | 100x13.5x6000mm |
| 30x2.5x6000mm | 50x2.75x6000mm | 70x5.5x6000mm | 120x7.5x6000mm |
| 30x2.75x6000mm | 50x3.0x6000mm | 70x5.75x6000mm | 120x7.75x6000mm |
| 30x3.0x6000mm | 50x3.25x6000mm | 70x7.25x6000mm | 120x9.25x6000mm |
| 30x3.25x6000mm | 50x3.5x6000mm | 70x7.5x6000mm | 120x9.5x6000mm |
| 30x3.5x6000mm | 50x3.75x6000mm | 70x7.75x6000mm | 120x9.75x6000mm |
| 30x3.75x6000mm | 50x4.0x6000mm | 70x9.25x6000mm | 120x11.25x6000mm |
| 30x4.0x6000mm | 50x4.25x6000mm | 70x9.5x6000mm | 120x11.75x6000mm |
| 30x4.25x6000mm | 50x4.5x6000mm | 70x9.75x6000mm | 120x13.5x6000mm |
| 30x4.5x6000mm | 50x4.75x6000mm | 70x11.5x6000mm | 150x9.5x6000mm |
| 30x4.75x6000mm | 50x5.0x6000mm | 70x11.75x6000mm | 150x9.75x6000mm |
| 30x5.0x6000mm | 50x5.25x6000mm | 80x5.25x6000mm | 150x11.5x6000mm |
| 30x5.25x6000mm | 50x5.5x6000mm | 80x5.5x6000mm | 150x11.75x6000mm |
| 30x5.5x6000mm | 50x5.75x6000mm | 80x5.75x6000mm | 150x13.5x6000mm |
| 30x5.75x6000mm | 50x7.25x6000mm | 80x7.25x6000mm | |
Chemical composition and mechanical properties
| Chemical Composition | Mechanical Properties | |||||||||
| Material | C | Si | Mn | P | S | Cr | Ni | Y.P. (MPA) | T.S (MPA) | E.L. % |
| Q195 | 0.06-0.12 | ≤0.3 | 0.25-0.50 | ≤0.045 | ≤0.050 | ≥195 | 315~430 | ≥33 | ||
| Q235 | 0.12-0.20 | ≤0.30 | 0.30-0.70 | ≤0.040 | ≤0.040 | ≥235 | 375-500 | ≥26 | ||
| Q345 | 0.12-0.20 | 0.20-0.60 | 1.20-1.60 | ≤0.040 | ≤0.040 | ≥345 | 510-600 | ≥22 | ||
| AISI 1020 | 0.17-0.23 | 0.17-0.37 | 0.35-0.65 | ≤0.25 | ≤0.3 | ≥245 | ≥410 | ≥25 | ||
| ASTA A105 | ≤0.35 | ≤0.35 | 0.6-1.05 | ≤0.040 | ≤0.050 | ≤0.3 | ≤0.4 | ≥250 | ≥485 | ≥22 |
| AISI1050 | 0.47-0.55 | 0.17-0.37 | 0.50-0.80 | ≤0.035 | ≤0.035 | ≤0.15 | ≤0.30 | ≥630 | ≥375 | ≥14 |
| AISI1055 | 0.52-0.6 | 0.17-0.37 | 0.50-0.80 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.30 | ≥645 | ≥380 | ≥13 |
| SC45 | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | ≤0.035 | ≤0.035 | ≥355 | ≥600 | ≥16 | ||
Slited cut flat bar production line

Hot rolled black mild steel flat bar as following round edge

Hot rolled and slit cut black mild steel flat bar big quantity in warehouse in stock

Application
5160 SUP9 hot rolled steel flat bar point to the the steel that the width is 12-300 mm, the thickness is 4-60mm
thick, and cross section is rectangle with the edge of a little pure steel.
Main use: flat as timber can be used in the system of hoop iron parts, tools and machinery.
It also can be used as frame structure and escalator.
Flat Bar is used for general fabrication, making structures and frames.
Mild Steel Flat Bar can be easily cut and drilled, and is particularly suited to welding.
Examples of its use include furniture making, machinery manufacturing,
shipbuilding, railway spare parts, iron towers, steel structures, and boilers.
Contact Us

FAQ
Q: Are your slit cut flat bars deburred?
A: Our hot-rolled slit cut flat bars have slightly rounded edges but are not fully deburred. They are fine for structural frames. If you need clean edges for knives or hand tools, we can arrange edge milling or grinding for an extra cost.
Q: Can you supply 5160 flat bar in the annealed condition?
A: Yes. We supply hot-rolled for structural use, but if you need to drill or mill the bars, you should order the annealed version. We source annealed 5160 from our partner mills, which means longer lead times and higher prices.
Q: How do you control camber on 6-meter flat bars?
A: We check camber before shipping. Slight camber is normal for hot-rolled. If you use automated stamping, specify a maximum camber (e.g., 0.5% of length). For very straight requirements, we recommend cold-drawn flat bars instead.
Q: What is the width and thickness tolerance of your slit cut bars?
A: For widths under 100mm, tolerance is typically ±0.5mm to ±1.0mm. Thickness tolerance is ±0.2mm to ±0.3mm. If you need tighter tolerances (±0.1mm) without milling, use cold-rolled bars.
Q: Do you provide material test certificates for 5160?
A: Yes, every shipment includes a Mill Test Certificate (MTC) showing chemical and mechanical properties. We also check hardness for spring and tool applications. Third-party inspection (like SGS) can be arranged before shipment.
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