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What is Carbon Steel Plate -Overview

Carbon Steel Plate

Carbon steel plates are primarily composed of carbon (C), manganese (Mn), phosphorus (P), sulfur (S), and silicon (Si), with minimal alloying elements like aluminum (Al), chromium (Cr), nickel (Ni), molybdenum (Mo), and vanadium (V). These plates are available in low, medium, and high carbon grades, with higher carbon content leading to increased strength and durability. Typically, carbon steel plates range from 0.4 mm to 80 mm in thickness and 1000 mm to 4500 mm in width, with lengths up to 18 meters, customizable to fit various applications. They can also be processed into cold-rolled steel coils. Low carbon steel plates are especially valued for their excellent ductility and weldability.

Carbon Content Levels for Carbon Steel Plates

  • Low carbon steel plate (mild steel plate): Carbon content is 0.06% to 0.25%.
  • Medium carbon steel plate: Carbon content ranges from 0.25% to 0.55%.
  • High carbon steel plate (hard steel plate): Carbon content is 0.55% to 1.0%.

    As the carbon content increases, the hardness of the steel plate also increases.

What Are The Different Types Of Carbon Steel Plates Available?

Carbon steel plates are versatile and widely used in various industries. They are classified based on carbon content and their applications. Different types include:

Carbon Structural Steel Plate

This plate is primarily used in the construction industry and must meet high standards of quality, durability, and performance. It needs to withstand heavy loads and pressure and be corrosion-resistant. Also known as construction steel plate.

Boiler Steel Plate

Used in designing vessels, boilers, and heat containers, these high-pressure plates have low corrosive properties and can withstand low heat. Layers of chromium or nickel are added to suit various environments.

Tanks Steel Plate

Used for building oil and gas tanks, storage tanks, water tanks, and tanks for storing various materials.

Carbon Shipbuilding Steel Plate

These plates are in high demand, especially in the oil and gas industry. They require thick plates of excellent quality, often made to customer specifications. The steel used must be certified to prevent issues like lamellar tearing, which can be dangerous.

What standards referred to carbon steel plate

Carbon steel plates conform to various standards to meet different applications:

  1. ASTM A36-The most common standard for carbon steel plates, used widely in construction.
  2. ASTM A283 Grade A, B, C- Commonly used in carbon structural applications.
  3. ASTM A516- Designed for boiler and vessel steel plates.
  4. ASTM A537- For heat-treated carbon steel plates used in fusion-welded pressure vessels and structural applications.
  5. ASTM A573- A structural steel plate with carbon-manganese-silicon.
  6. ASTM A572- Offers higher mechanical strength compared to A36, with lower weight.
  7. ASTM A737- Suitable for low alloy steel plates used in boilers and pressure vessels.


So carbon steel plates have a wide coverage for different types of steel plates in different industries.

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A carbon steel plate is a flat sheet of steel that mainly consists of carbon and iron. It is widely used in various industries due to its strength, durability, and affordability.

Carbon steel is used for making construction materials, automotive components, machinery parts, and pipelines. Its strength and durability make it suitable for heavy-duty applications in these industries.

Carbon steel is generally more affordable than stainless steel and alloy steel. Its cost-effectiveness, combined with its strength and durability, makes it a popular choice in many industrial applications.

The four types of carbon steel are low carbon steel (mild steel), medium carbon steel, high carbon steel, and ultra-high carbon steel. Each type has varying carbon content, affecting its hardness, strength, and applications.

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