A Closer Look at the Chemical Composition and Mechanical Properties of SNG 700/2 Steel Grade

SNG 700/2 is a high-strength, low-alloy structural steel grade that is commonly used in the construction and engineering industries. It offers excellent mechanical properties and is known for its durability and high tensile strength. In this article, we will take a closer look at the chemical composition and mechanical properties of SNG 700/2 steel grade.

Chemical Composition:

The chemical composition of SNG 700/2 steel grade is as follows:

– Carbon (C): 0.20 – 0.30%
– Manganese (Mn): 0.70 – 1.60%
– Silicon (Si): 0.25 – 0.60%
– Phosphorus (P): 0.025% max
– Sulfur (S): 0.025% max
– Chromium (Cr): 0.50 – 1.50%
– Copper (Cu): 0.25% max
– Nickel (Ni): 0.60% max

The presence of these chemical elements contributes to the overall strength and toughness of SNG 700/2 steel grade. The combination of carbon, manganese, and chromium enhances the steel’s hardenability, while the presence of nickel and copper improves its corrosion resistance.

Mechanical Properties:

SNG 700/2 steel grade offers excellent mechanical properties, making it suitable for a wide range of applications. Some of its key mechanical properties include:

– Tensile Strength: 700 – 850 MPa
– Yield Strength: 700 MPa min
– Elongation: 14% min
– Charpy V-notch Impact Toughness: 27 J min at -20°C

The high tensile strength and yield strength of SNG 700/2 steel grade make it ideal for structural and construction applications that require durability and load-bearing capacity. Additionally, its excellent impact toughness ensures that it can withstand sudden shocks and vibrations without undergoing plastic deformation or fracture.

Applications:

SNG 700/2 steel grade is commonly used in the construction of bridges, buildings, and other structural components. Its high strength and toughness make it suitable for applications where structural integrity and reliability are crucial. It is also used in the fabrication of heavy machinery and equipment, as well as in the manufacturing of transportation vehicles and industrial storage tanks.

In conclusion, SNG 700/2 steel grade is a versatile and reliable material that offers excellent mechanical properties and a balanced chemical composition. Its high tensile strength, yield strength, and impact toughness make it a popular choice for a wide range of structural and engineering applications. Whether used in the construction of buildings or the fabrication of heavy machinery, SNG 700/2 steel grade is a reliable and durable material that meets the demanding requirements of modern industries.