Semih Metals, located in Istanbul, Turkey, stands out as a leading manufacturer and supplier of top-notch Carbon Steel Flat Bars. With years of experience in the metal industry under their belt, the company is committed to providing precision-engineered products that align with international standards. Semih Metals prioritizes durability, reliability, and consistency in every flat bar they create, catering to a broad spectrum of industrial needs. Their cutting-edge manufacturing facilities, paired with rigorous quality control measures, have earned them a reputation as a trusted partner for clients in construction, automotive, machinery, and infrastructure sectors, offering customized solutions to meet various engineering challenges.
Carbon Steel Flat Bars are mainly made of iron with a carefully controlled carbon content, usually between 0.2% and 0.6%, striking a perfect balance between strength and ductility. They might also include trace amounts of manganese, phosphorus, and sulfur to boost their mechanical properties. These flat bars are known for their impressive tensile strength, hardness, and wear resistance, along with good weldability and machinability. Heat treatment processes can further enhance their performance, making them ideal for applications that require durability and structural integrity under different loads and environmental conditions.
| Grade | Carbon Steel |
|---|---|
| Carbon Steel Square bar size | 4 to 100mm |
| CS Hollow Bar | 32mm OD x 16mm ID to 250mm OD x 200mm ID) |
| Low Carbon Steel Hex Bar size | 2-100mm A/F |
| Carbon Steel Angle bar size | 3mm*20mm*20mm~12mm*100mm*100mm |
| CS Rectangles Size | 33 x 30mm to 295 x 1066mm |
| Low Carbon Steel Flat bar size | Thickness: 2 -100mm |
| Width: 10 to 500mm | |
| Carbon Steel Channel Bar | 80 x 40mm to 150 x 75mm section; 5.0 to 6.0mm thickness |
| CS Section | 3.0 to 12.0mm thickness |
| Low Carbon Steel Round bar size | Diameter: 3-~800mm |
| Carbon Steel Billet Size | 1/2″ to 495mm Diameter |
| CS Round Bar Standard Dimensions | Diameter / Height: Carbon Steel Rod and Bar Sizes : 0.5 inches / 0.625 inches / 0.75 inches / 0.875 inches / 1.0 inches / 1.125 inches / 1.25 inches / 1.375 inches / 1.5 inches / 1.75 inches / 2.0 inches / 2.25 inches / 2.5 inches / 2.75 inches / 3.0 inches / 3.25 inches / 3.5 inches / 3.75 inches / 4.0 inches / 4.25 inches / 4.5 inches / 5.0 inches / 5.25 inches / 5.5 inches / 6.0 inches / 7.0 inches / 8.0 inches / 9.0 inches. |
| Carbon Steel Surface | Bright, Hot Rolled Pickled, Cold Drawn, Sand Blasting Finished, Polished, Hairline |
| CS Tolerance | H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements |
| Low Carbon Steel Technique | Carbon Steel Hot Rolled, Cold Drawn, Cold Rolled, Forged Round Bar, Rod |
| Carbon Steel Condition | Hardened & tempered, annealed |
| Finish | Cold (bright) drawn, centreless ground, hot rolled, smooth turned, peeled, slit rolled edge, hot rolled annealed, Rough Turned, Bright, Polish, Grinding, Centreless Ground & Black |
| Form | Carbon Steel Round, Rod, T-Bar, Channel Bar, Precision Ground Bar, Flat Bar, Square Bar, Blocks, Round Rod, Rings, Hollow, Triangle, Rectangle, Hex (A/F), Threaded, Half Round Bar, Profiles, Billet, Ingot, I/H Bar, Forging etc. |
| Processing | Bar cutting to 650mm |
| Our Carbon Steel Round bar conforms to NACE MR0175/ISO 15156 | |
| Carbon Steel Grades | C | Mn | Si | S Max. | P Max. |
|---|---|---|---|---|---|
| Ck 45 | 0.42/0.50 | 0.50/0.80 | 0.15/0.35 | 0.04 | 0.04 |
| Ck 55 | 0.52/0.60 | 0.60/0.90 | 0.15/0.35 | 0.04 | 0.04 |
| Ck 60 | 0.57/0.65 | 0.60/0.90 | 0.15/0.35 | 0.04 | 0.04 |
| SAE1006 | 0.08 max | 0.25/0.40 | 0.10/0.30 | 0.05 | 0.04 |
| SAE1008 | 0.10 max | 0.30/0.50 | 0.10/0.30 | 0.05 | 0.04 |
| SAE1010 | 0.08/0.13 | 0.30/0.60 | 0.10/0.30 | 0.05 | 0.04 |
| SAE1018 | 0.15/0.20 | 0.60/0.90 | 0.10/0.30 | 0.05 | 0.04 |
| SAE1020 | 0.18/0.23 | 0.30/0.60 | 0.10/0.30 | 0.09 | 0.04 |
| SAE1030 | 0.28/0.34 | 0.60/0.90 | 0.10/0.40 | 0.05 | 0.04 |
| SAE1035 | 0.32/0.38 | 0.60/0.90 | 0.10/0.40 | 0.05 | 0.04 |
| SAE1040 | 0.37/0.44 | 0.60/0.90 | 0.10/0.40 | 0.05 | 0.04 |
| SAE1045 | 0.40/0.50 | 0.60/0.90 | 0.10/0.40 | 0.05 | 0.04 |
| En-8D | 0.40/0.45 | 0.70/0.90 | 0.05/0.35 | 0.06 | 0.06 |
| En-9 | 0.50/0.60 | 0.50/0.80 | 0.05/0.35 | 0.06 | 0.06 |
| Grade | Yield Strength, | Tensile Strength, | Elongation at Break (in 50 mm) | Bulk Modulus (typical for steel) | Modulus of Elasticity | HBW | Poissons Ratio | Fatigue strength coefficient, of (Mpa) | Shear Modulus | Impacting Energy | Reduction of area, min: |
|---|---|---|---|---|---|---|---|---|---|---|---|
| a36 | 250 MPa | 400 – 550 MPa | 23.00% | 140 GPa | 200 GPa | 0.26 | 79.3 GPa | ||||
| 36300 psi | 58000 – 79800 psi | 23.00% | 20300 ksi | 29000 ksi | 0.26 | 11500 ksi | |||||
| EN45 | 35 (241) | 80 (551) | 40% | 204 Gpa | 948 | ≥63 | |||||
| EN19 | ≥930 Mpa | ≥1080 Mpa | ≥12 | 217 | ≥45 | ||||||
| 105 | 36,000 psi [250 MPa] | 70,000 psi (485 MPa] | 187 | 30% min | |||||||
| EN8 | ≥210 | ≥380 | ≥25 | ≤111HB | ≥50 |
Yes, common coatings for carbon steel flat bars include galvanizing, powder coating, zinc plating, epoxy coating, and polyurethane coating to enhance corrosion resistance and durability for various applications.
The different types of carbon steel flat bars include mild steel, medium carbon steel, high carbon steel, alloy steel, and tool steel, each offering various strength, hardness, and wear resistance properties.
Yes, carbon steel flat bars can be recycled. After use, they can be melted down and repurposed for new steel products, reducing waste and conserving resources in manufacturing.
Thanks to their versatility and strength, Carbon Steel Flat Bars find applications across various industries. They are crucial components in construction frameworks, machinery manufacturing, and structural applications, such as support beams, braces, and reinforcements. In the automotive industry, they are used in chassis, brackets, and other load-bearing components. Additionally, flat bars are essential in the fabrication of tools, equipment, and industrial machinery, as well as in decorative and architectural features. Their adaptability, combined with ease of machining and welding, makes them vital for projects that demand strength, reliability, and long-lasting performance.






We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Semih Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Istanbul, Turkey
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