Understanding the Composition and Properties of GG 35 Steel Grade

GG 35 steel grade is a type of cast iron that is used in various applications due to its excellent combination of mechanical properties and chemical composition. Below is a detailed understanding of its composition and properties:

1. Chemical Composition:
– Carbon (C): 3.3 – 3.6%
– Silicon (Si): 2.0 – 2.7%
– Manganese (Mn): 0.6 – 0.9%
– Phosphorus (P): <0.2%
– Sulfur (S): <0.05%
– Chromium (Cr): 0.2 – 0.4%
– Nickel (Ni): 0.2 – 0.4%
– Copper (Cu): <0.3%
– Magnesium (Mg): <0.02% 2. Mechanical Properties:
– Tensile Strength: ≥ 450 MPa
– Yield Strength: ≥ 310 MPa
– Elongation: ≥ 10%
– Hardness: 170 – 230 HB
– Modulus of Elasticity: 130 – 170 GPa
– Impact Strength: ≥ 20 J/cm²

These mechanical properties make GG 35 steel grade suitable for various engineering applications that require high strength, toughness, and wear resistance.

3. Composition and Properties:
– Carbon content provides strength and hardness to the steel grade. It also improves wear resistance and heat resistance.
– Silicon enhances fluidity during casting and improves strength and hardness. It also helps resist oxidation and heat.
– Manganese increases strength, hardness, and wear resistance. It also improves impact resistance and helps form graphite nodules during solidification.
– Chromium and nickel enhance the steel’s corrosion resistance and high-temperature strength.
– Phosphorus and sulfur are kept minimal to avoid brittleness and improve the steel’s machinability and ductility.
– Copper enhances corrosion resistance and improves heat conductivity.
– Magnesium acts as a desulfurizing agent during production.

Overall, understanding the chemical composition and mechanical properties of GG 35 steel grade is vital in determining its suitability for specific applications. It is commonly used in the automotive, machinery, and construction industries due to its excellent strength, hardness, and wear resistance.
GG 35 Steel grade
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