Thabiso Steel is a reputable manufacturer and supplier located in Cape Town, South Africa, focusing on high-quality ASME SA 387 Grade 5 Class 1/2 Sheets and Plates. With a strong dedication to quality and ensuring customer satisfaction, Thabiso Steel caters to a diverse range of industries, providing dependable steel solutions designed to perform in high-temperature and high-pressure settings. Our state-of-the-art manufacturing capabilities, strict compliance with global standards, and extensive distribution network position us as a go-to partner for essential steel needs in South Africa and beyond.
ASME SA 387 Grade 5 Class 1/2 Sheets and Plates are alloy steels primarily made up of Chromium (4-6%) and Molybdenum (0.45-0.65%), which boost their corrosion resistance and high-temperature strength. These grades come in two classes: Class 1, known for its higher ductility, and Class 2, which offers enhanced tensile strength. The mechanical properties include a tensile strength range of 415-585 MPa for Class 1 and 515-690 MPa for Class 2, with yield strengths starting at 240 MPa and 275 MPa, respectively. This steel is not only excellent for welding but also shows great resistance to thermal fatigue and maintains dimensional stability even with temperature fluctuations.
| Standard | ASTM A387 / ASME SA387 |
|---|---|
| Width | 1000mm-3000mm |
| Thickness | 1.0mm – 200mm |
| Production | Hot-Rolled (HR) / Cold-Rolled (CR) |
| Grade | C | Si | Mn | P | S | Cr | Mo |
| A387 GR.5 CL.1 | 0.15 max | 0.55 max | 0.25-0.66 max | 0.035 max | 0.035 max | 3.90-6.10 max | 0.40-0.70 max |
| Grade | A387 GR.5 CL.1 | |||
| A387 GR.5 CL.1 | Thickness mm | Yield Min Mpa | Tensile Mpa | Elongation Min % |
| t≦50 | 205 | 415-585 | 18 | |
| 50<t≦200 | – | – | – | |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Jaxon Steel is a trusted manufacturer and supplier of high-quality ASME SA 387 Grade 5 Class 1/2 Sheet and Plates​ in Cape Town, South Africa. We specialize in premium steel products, including Alloy Steel, Carbon Steel, Mild Steel and Galvanized Steel, with a strong focus on Carbon Steel Sheet and Plates. Our extensive inventory also includes Pipes, Tubes, Flanges, Forged Fittings and Bars. Committed to fast delivery and exceptional customer service, we use only the finest raw materials to ensure superior strength, durability and performance for critical industrial applications. Contact us today for all your ASME SA 387 Grade 5 Class 1/2 Sheet and Plates​ needs!
ASME SA 387 Grade 5 Class 1/2 Sheets and Plates find extensive use in industries that demand high-temperature resistance and pressure durability, such as power generation, petrochemical processing, and oil & gas refining. These plates are perfect for constructing pressure vessels, boilers, heat exchangers, and reactors that operate in extreme thermal conditions. Their outstanding mechanical properties and corrosion resistance make them ideal for sour service environments and offshore platforms. Thabiso Steel guarantees that these plates comply with stringent industry standards, ensuring they are reliable components in critical engineering projects and high-performance industrial systems.
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.
Copyright 2025 ThabisoSteel. All rights reserved
