ASTM A572 Grade 380

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ASTM A572 Grade 380

ASTM A572 is a specification for high-strength low-alloy (HSLA) structural steel shapes, plates, sheet piling, and bars. This standard is widely used in the construction industry for a variety of applications requiring higher strength and improved toughness compared to regular carbon steel.

The ASTM A572 specification covers different grades categorized by yield strength, namely Grade 42, Grade 50, Grade 55, Grade 60, and Grade 65. Each grade has specific chemical composition and mechanical properties requirements.

Chemical composition:

The chemical composition of ASTM A572 steel grades typically includes elements such as carbon, manganese, phosphorus, sulfur, silicon, copper, chromium, nickel, and molybdenum. The exact composition varies depending on the grade.

Mechanical properties:

The mechanical properties of ASTM A572 grades include yield strength, tensile strength, elongation, and impact resistance. The values differ based on the grade and thickness of the material.

Typical applications:

ASTM A572 steel finds applications in a range of structural components, including buildings, bridges, transmission towers, machinery, and welded structures. It is commonly used in construction projects where high strength and good weldability are required. The various grades offer flexibility in selecting the appropriate strength level based on the specific application.

ASTM A572 Grade 380 is a high-strength low-alloy structural steel that falls under the ASTM A572 steel specification. Here are the details regarding its chemical composition, mechanical properties, and typical applications:

Chemical composition (percentage by weight):

Carbon (C): ≤0.23%

Manganese (Mn): 1.35-1.65%

Phosphorus (P): ≤0.04%

Sulfur (S): ≤0.05%

Silicon (Si): 0.15-0.40%

Mechanical properties (minimum values at ambient temperature):

Yield strength (Fy): ≥380 MPa

Tensile strength (Fu): 485-620 MPa

Elongation in 2 inches (50 mm): ≥19%

Impact energy: Varies depending on the thickness and testing temperature

Typical applications:

ASTM A572 Grade 380 is commonly used in structural applications where higher strength and improved toughness are required. It is widely used in construction, bridges, buildings, machinery, and other structural components. This grade offers good weldability and formability, making it suitable for various fabrication processes.

Property	Value	Comment
Density	7.8 g/cm³ Show Material materials with Density of 7.8 g/cm³	Typical for Steel

Property	Value	Comment
Elastic modulus	190 - 210 GPa Show Material materials with Elastic modulus of 190 - 210 GPa	Typical for Steel
Elongation	14.1 % Show Material materials with Elongation of 14.1 %	Predicted Value, A200
	15.5 % Show Material materials with Elongation of 15.5 %	Predicted Value, A80
	17.5 % Show Material materials with Elongation of 17.5 %	Predicted Value, Transverse
	20.2 % Show Material materials with Elongation of 20.2 %	Predicted Value, A80 Transverse
	20.3 % Show Material materials with Elongation of 20.3 %	Predicted Value, A5
	21.1 % Show Material materials with Elongation of 21.1 %	Predicted Value, A50
	21.7 % Show Material materials with Elongation of 21.7 %	Predicted Value
Poisson's ratio	0.3 [-] Show Material materials with Poisson's ratio of 0.3 [-]	Typical for Steel
Reduction of area	41.2 % Show Material materials with Reduction of area of 41.2 %	Predicted Value
	43 % Show Material materials with Reduction of area of 43 %	Predicted Value, Transverse
Shear modulus	79.4 GPa Show Material materials with Shear modulus of 79.4 GPa	Predicted Value
Shear strength	515 MPa Show Material materials with Shear strength of 515 MPa	Predicted Value

Property	Value	Comment
Coefficient of thermal expansion	11.78 1/K Show Material materials with Coefficient of thermal expansion of 11.78 1/K	Predicted Value
Specific heat capacity	461.8 J/(kg·K) Show Material materials with Specific heat capacity of 461.8 J/(kg·K)	Predicted Value
Thermal conductivity	40.42 W/(m·K) Show Material materials with Thermal conductivity of 40.42 W/(m·K)	Predicted Value

Property	Value	Comment
Electrical conductivity	7 S/m Show Material materials with Electrical conductivity of 7 S/m	Predicted Value
Electrical resistivity	35 Ω·m Show Material materials with Electrical resistivity of 35 Ω·m	Predicted Value

Property	Value	Related Standards
Carbon	0.25 % Show Material materials with Carbon of 0.25 %	ASTM A572
Manganese	1.35 % Show Material materials with Manganese of 1.35 %	ASTM A572
Phosphorus	0.03 % Show Material materials with Phosphorus of 0.03 %	ASTM A572
Silicon	0.4 % Show Material materials with Silicon of 0.4 %	ASTM A572
Sulfur	0.03 % Show Material materials with Sulfur of 0.03 %	ASTM A572

Property
Supplier Disclaimer	The given information is a rough description and some properties can depend on various factors such as product thickness. Please contact the supplier or refer to the related norm or standard for further information.