From Shipbuilding to Infrastructure: How 12Ni19 Steel Grade is Making Its Mark

Specifications of 12Ni19 Steel Grade:

1. Mechanical Properties:
– Tensile Strength: The tensile strength of 12Ni19 steel grade is typically in the range of 650-800 MPa.
– Yield Strength: The yield strength of 12Ni19 steel grade is generally around 400 MPa.
– Elongation: The elongation at break for this steel grade is typically around 20%.
– Impact Toughness: 12Ni19 steel grade exhibits excellent impact toughness, making it suitable for applications in shipbuilding and infrastructure construction.
– Fatigue Resistance: This steel grade has good fatigue resistance, enabling it to withstand cyclic loading without failure.

2. Chemical Composition:
– Carbon (C): The carbon content in 12Ni19 steel grade is typically limited to a maximum of 0.15%.
– Silicon (Si): The silicon content is generally kept below 0.50% to maintain good weldability.
– Manganese (Mn): The manganese content is usually around 1.00-1.50% for improving the strength and toughness of the steel.
– Phosphorus (P) and Sulfur (S): These elements are normally limited to very low levels, typically below 0.025%, to ensure good weldability and improve the steel’s resistance to cracking.
– Nickel (Ni): The nickel content in 12Ni19 steel grade is around 9-11%. The high nickel content enhances the steel’s toughness, resistance to low-temperature embrittlement, and provides superior corrosion resistance.
– Chromium (Cr): The chromium content is usually kept below 0.50% to prevent excessive hardening and maintain good weldability.
– Molybdenum (Mo): In some cases, small amounts of molybdenum (around 0.20-0.40%) may be added to improve the steel’s toughness and high-temperature strength.

Overall, the 12Ni19 steel grade offers a combination of excellent mechanical properties and chemical composition, making it suitable for various applications in shipbuilding and infrastructure construction. Its high strength, impact toughness, and resistance to low-temperature embrittlement make it an ideal choice for demanding environments.
12Ni19 Steel grade
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