GG 15 Steel: The Essential Ingredient for Longevity in Marine Construction

Specification GG 15 Steel: The Essential Ingredient for Longevity in Marine Construction

GG 15 steel is a widely used material in marine construction due to its excellent mechanical properties and resistance to corrosion in seawater. The following is the specification for GG 15 steel:

Mechanical Properties:
1. Tensile Strength: The minimum tensile strength of GG 15 steel is 250 MPa.
2. Yield Strength: The minimum yield strength of GG 15 steel is 150 MPa.
3. Elongation: The minimum elongation of GG 15 steel is 20%.
4. Hardness: The hardness range for GG 15 steel is 140-170 HB.

Chemical Composition:
1. Carbon (C): The carbon content in GG 15 steel is between 3.0-3.7%.
2. Silicon (Si): The silicon content in GG 15 steel is between 1.7-2.3%.
3. Manganese (Mn): The manganese content in GG 15 steel is between 0.6-0.9%.
4. Phosphorus (P): The phosphorus content in GG 15 steel is limited to a maximum of 0.15%.
5. Sulfur (S): The sulfur content in GG 15 steel is limited to a maximum of 0.06%.

These mechanical properties and chemical composition make GG 15 steel highly suitable for marine construction projects. Its high tensile and yield strength ensure the structural integrity of marine components, while its resistance to corrosion, especially in seawater, enhances the durability and longevity of the structures. GG 15 steel is commonly used in the construction of ship hulls, bulkheads, and other critical marine components where strength and corrosion resistance are essential.
GG 15 Steel grade
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