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
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|
Typical for Steel |
| Property | Value | Comment |
|---|---|---|
| Elastic modulus |
190 - 210 GPa
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|
Typical for Steel |
| Elongation |
14.1 %
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|
Predicted Value, A200 |
|
15.5 %
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|
Predicted Value, A80 | |
|
17.5 %
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|
Predicted Value, Transverse | |
|
20.2 %
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|
Predicted Value, A80 Transverse | |
|
20.3 %
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|
Predicted Value, A5 | |
|
21.1 %
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|
Predicted Value, A50 | |
|
21.7 %
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|
Predicted Value | |
| Poisson's ratio |
0.3 [-]
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|
Typical for Steel |
| Reduction of area |
41.2 %
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|
Predicted Value |
|
43 %
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|
Predicted Value, Transverse | |
| Shear modulus |
79.4 GPa
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Predicted Value |
| Shear strength |
515 MPa
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Predicted Value |
| Property | Value | Comment |
|---|---|---|
| Coefficient of thermal expansion |
11.78 1/K
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Predicted Value |
| Specific heat capacity |
461.8 J/(kg·K)
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Predicted Value |
| Thermal conductivity |
40.42 W/(m·K)
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Predicted Value |
| Property | Value | Comment |
|---|---|---|
| Electrical conductivity |
7 S/m
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Predicted Value |
| Electrical resistivity |
35 Ω·m
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Predicted Value |
| Property | Value | Related Standards |
|---|---|---|
| Carbon |
0.25 %
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|
ASTM A572 |
| Manganese |
1.35 %
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|
ASTM A572 |
| Phosphorus |
0.03 %
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|
ASTM A572 |
| Silicon |
0.4 %
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|
ASTM A572 |
| Sulfur |
0.03 %
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|
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. | |