Carbon Steel Plates

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Carbon Steel Plates


Carbon steel plates are essential construction and industrial materials. The grade designation, like S235JR in European standards, is crucial as it determines the fundamental mechanical and chemical properties. The actual thickness may deviate slightly from the nominal value, for example, 8.1 mm for a nominal 8 - mm plate. Straightness deviation, limited to ≤ 2 mm/m, affects the plate's flatness in large - scale applications. Shear strength, reaching up to 250 MPa, enables the plate to withstand cutting or tearing forces. Fatigue strength, such as 180 MPa at 10^6 cycles, is relevant for applications with repetitive stress. The corrosion rate in a specific environment, like 0.05 mm/year in a 5% NaCl salt - fog environment, indicates its resistance to corrosion. Carbon content, ranging from 0.18 - 0.25%, significantly influences the plate's hardness, strength, and ductility. Sulfur and phosphorus content are strictly limited (S ≤ 0.045, P ≤ 0.045) to maintain quality. Heat treatment, such as annealing, quenching, or tempering, is used to achieve desired mechanical properties. The coating adhesion strength, with a minimum of ≥ 5 N/mm², ensures the quality of the coating - substrate bond. Overall, these parameters comprehensively define the performance and quality of carbon steel plates, making them suitable for a wide range of applications.