ASTM A573 Grade 70 is a structural carbon steel plate used in applications requiring improved toughness. It is mainly used for tanks, storage vessels, and other equipment that require high strength and improved toughness.
Chemical Composition:
Carbon (C): 0.24% max
Manganese (Mn): 0.85-1.35%
Phosphorus (P): 0.035% max
Sulfur (S): 0.04% max
Silicon (Si): 0.15-0.40%
Mechanical Properties:
Tensile Strength: 485-620 MPa (70-90 ksi)
Yield Strength: 290 MPa (42 ksi) minimum
Elongation (in 8" or 200 mm): 17% minimum
Elongation (in 2" or 50 mm): 20% minimum
Hardness:
Typically around 150-180 HB depending on thickness and heat treatment.
Weldability: ASTM A573 Grade 70 steel exhibits good weldability and can be welded using standard methods.
Toughness: Enhanced toughness makes it suitable for low-temperature environments, such as storage tanks.
Formability: Good ductility and formability for various applications like pressure vessels, tanks, and structural components.
Pressure vessels and storage tanks
Industrial structural applications
Equipment used in the oil and gas, chemical, and manufacturing industries
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