S 18-1-2-5 Steel Grade: The Ultimate Solution for Corrosion-Resistant Structures

The S 18-1-2-5 steel grade is specifically designed to provide corrosion resistance for structures. Its chemical composition and mechanical properties make it an ideal choice for applications where exposure to corrosive environments is a concern.

Chemical Composition:
– Carbon (C): 0.08% max
– Silicon (Si): 0.40% max
– Manganese (Mn): 0.60 – 1.00%
– Phosphorus (P): 0.035% max
– Sulfur (S): 0.020% max
– Chromium (Cr): 16.00 – 19.00%
– Nickel (Ni): 1.25 – 2.50%
– Molybdenum (Mo): 0.80 – 1.20%
– Copper (Cu): 0.20 – 0.60%
– Nitrogen (N): 0.025% max

Mechanical Properties:
– Tensile Strength: 550 – 750 MPa
– Yield Strength: 450 MPa min
– Elongation: 14% min
– Impact Toughness: 27 J (20°C)
– Hardness: 180 – 220 HB

These chemical composition and mechanical properties provide the S 18-1-2-5 steel grade with excellent corrosion resistance, high strength, and good impact toughness. It is suitable for various structural applications in industries such as construction, marine, oil and gas, and chemical processing.

The S 18-1-2-5 steel grade offers superior resistance to corrosion from various factors, including acidic and alkaline environments, saltwater, and atmospheric exposure. This resistance is achieved through the presence of chromium, nickel, and molybdenum in its chemical composition, which form a protective passive layer on the surface of the steel.

In addition to corrosion resistance, the S 18-1-2-5 steel grade exhibits high tensile and yield strength, making it capable of withstanding heavy loads and structural stresses. Its elongation and impact toughness properties ensure that it can endure sudden impacts and provide long-lasting durability.

Overall, the S 18-1-2-5 steel grade is an ultimate solution for corrosion-resistant structures due to its excellent chemical composition and mechanical properties. It offers the necessary strength and resistance to ensure the longevity and reliability of structures in harsh environments.
S 18-1-2-5 Steel grade
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