Thabiso Steel, a reputable manufacturer and supplier located in Cape Town, South Africa, specializes in providing top-notch High Carbon Steel C55 Sheets and Plates. Renowned for their exceptional strength, hardness, and durability, these steel products are crafted to adhere to international quality standards. Thabiso Steel prides itself on precision engineering, outstanding surface finishes, and consistent mechanical performance, serving a variety of industrial sectors. With a strong focus on reliability, prompt delivery, and customer satisfaction, Thabiso Steel has positioned itself as a leading provider of high-performance carbon steel products throughout South Africa and beyond.
High Carbon Steel C55 Sheets and Plates primarily consist of 0.50–0.60% carbon, 0.60–0.90% manganese, along with trace amounts of silicon, sulfur, and phosphorus. This specific composition results in remarkable hardness and tensile strength. They offer good wear resistance, moderate ductility, and high yield strength, making them perfect for heat treatment processes like quenching and tempering. The mechanical properties boast a tensile strength of around 700–850 MPa and hardness levels between 180–220 HB, ensuring they perform exceptionally well under tough conditions.
| Specification | ASTM A830/ASME SA830 |
| Thickness | 2-600mm |
| Width | 4200-11000mm |
| Length | 3000-18000mm |
| Finish | Hot rolled plate (HR) |
| Grade | C | Mn | P | S | Si | Cr | Mo | Ni | Cr+Mo+Ni |
| C55 | 0.52-0.6 | 0.60-0.90 | ≤ 0.045 | ≤ 0.045 | ≤ 0.4 | ≤ 0.4 | ≤ 0.1 | ≤ 0.4 | ≤ 0.63 |
| Mechanical properties a at room temperature in the quenched and tempered condition (+QT) | |||
| Diameter d mm | ≤ 16 | 16-40 | 40-100 |
| Thickness t mm | < 8 | 8-20 | 20-60 |
| Yield Strength Mpa | ≥550 | ≥490 | ≥420 |
| Tensile Strength Mpa | 800-950 | 750-900 | 700-850 |
| Elongation, % | ≥12 | ≥14 | ≥15 |
| Reduction of area ,% | ≥30 | ≥45 | ≥40 |
| C55 EN 10083-2 Number:1.0535 | Comparision of steel grades | |
| JIS G 4051 | S 55 C | |
| DIN 17200 | C 55 | |
| NFA 33-101 | AF70-C 55 | |
| UNI 7846 | C 55 | |
| BS 970 | 070 M 55 | |
| UNE 36011 | C 55 k | |
| SAE J 403-AISI | 1055 | |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
These High Carbon Steel C55 Sheets and Plates find extensive use in industries that demand superior wear resistance and strength. They’re perfect for crafting cutting tools, springs, shafts, gears, knives, hammers, and various machine components. The automotive sector relies on these plates for clutch plates, brake components, and heavy-duty mechanical parts. Additionally, they are utilized in agricultural tools, construction machinery, and industrial equipment that endure high stress and impact. Their versatility, durability, and capacity to withstand heat treatment make them a go-to material for mechanical and structural applications.
ThabisoSteel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Cape Town, South Africa.
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