The A656/A656M-13 steel grade is a high-strength, low-alloy structural steel used in various applications. It is designed to provide excellent weldability, formability, and notch toughness in structural applications where improved atmospheric corrosion resistance is required.
The chemical composition of A656/A656M-13 steel grade is as follows:
– Carbon (C): 0.18%
– Manganese (Mn): 1.65%
– Phosphorus (P): 0.025%
– Sulfur (S): 0.035%
– Silicon (Si): 0.60%
– Vanadium (V): 0.08%
– Nitrogen (N): 0.030%
The mechanical properties of A656/A656M-13 steel grade depend on the thickness of the material. The minimum yield strength for thicknesses up to 2.5 inches is 50 ksi (345 MPa), and the minimum tensile strength is 60 ksi (415 MPa). For thicknesses between 2.5 and 6 inches, the minimum yield strength is 46 ksi (315 MPa), and the minimum tensile strength is 58 ksi (400 MPa).
A656/A656M-13 is the standard number for this steel grade, as specified by ASTM International. This standard provides the requirements for hot-rolled structural steel, high-strength low-alloy plate with improved formability, and notch toughness.
Unique Properties and Applications:
The A656/A656M-13 steel grade offers several unique properties and is commonly used in structural applications. Some of its key properties and applications include:
1. High-Strength: This steel grade has a high yield strength, making it suitable for applications requiring high strength-to-weight ratios. It is commonly used in construction equipment, bridges, and structural components.
2. Excellent Weldability: A656/A656M-13 steel grade exhibits good weldability, allowing for ease of fabrication and construction. This makes it suitable for welding and forming applications.
3. Notch Toughness: The steel grade has excellent notch toughness, which is important for applications where the material may experience impact or stress concentration. This property makes it suitable for use in structures subjected to dynamic loads or harsh environments.
4. Atmospheric Corrosion Resistance: A656/A656M-13 steel grade incorporates improved atmospheric corrosion resistance, making it suitable for outdoor applications exposed to environmental factors such as moisture, humidity, and temperature variations.
Overall, the A656/A656M-13 steel grade is a versatile and high-performance material that offers strength, weldability, formability, and notch toughness. It is commonly used in various structural applications where these properties are required.