38NiCrMo4 KB Steel Grade: Revolutionizing Construction and Infrastructure Projects

The specification of 38NiCrMo4 KB steel grade is revolutionizing construction and infrastructure projects due to its exceptional mechanical properties and chemical composition.

Mechanical Properties:
– Tensile strength: Minimum of 1000 MPa
– Yield strength: Minimum of 800 MPa
– Elongation: Minimum of 12%
– Impact toughness: Minimum of 30 J
– Hardness: 280-325 HB

Chemical Composition:
– Carbon (C): 0.35-0.42%
– Silicon (Si): 0.10-0.40%
– Manganese (Mn): 0.60-0.90%
– Phosphorus (P): Maximum of 0.035%
– Sulfur (S): Maximum of 0.035%
– Chromium (Cr): 0.90-1.20%
– Nickel (Ni): 1.30-1.70%
– Molybdenum (Mo): 0.15-0.30%

These mechanical properties and chemical composition make 38NiCrMo4 KB steel grade highly suitable for construction and infrastructure projects. It offers excellent tensile and yield strength, ensuring structural integrity and resistance to fractures. The high impact toughness allows it to withstand heavy loads and sudden impacts without failure. The hardness range provides a good balance of strength and machinability.

The chemical composition is carefully formulated to enhance the steel’s properties. The carbon content provides strength and hardness, while the addition of silicon improves its resistance to oxidation and enhances its welding capabilities. Manganese contributes to the steel’s toughness and hardenability, enabling it to be hardened through heat treatment. The controlled levels of phosphorus and sulfur ensure good weldability and eliminate brittleness.

Additionally, the inclusion of chromium provides corrosion resistance, reducing the risk of rust and enhancing the steel’s durability in various environments. Nickel adds toughness and strength, improving the steel’s ability to handle high-stress conditions. Molybdenum further enhances the steel’s strength and toughness, particularly at elevated temperatures.

Overall, the 38NiCrMo4 KB steel grade’s exceptional mechanical properties and chemical composition make it a game-changer in construction and infrastructure projects. It offers superior performance, longevity, and reliability, ensuring the safety and durability of structures in demanding applications.
38NiCrMo4 KB Steel grade
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