ASTM A572 Steel Plate

PropertyDescription
Product NameASTM A572 Steel Plate
Material TypeCarbon Steel
HardnessTypically yields hardness around 130-190 HB
Thickness Range1/4" to 6" (6.35 mm to 152.4 mm)
Width Range48" to 120" (1219 mm to 3048 mm)
Length Range96" to 480" (2438 mm to 12192 mm)
Delivery OptionsCut to size, Standard sheets, Custom lengths
Standard ComplianceASTM A572/A572M
Categories: ,

Description

ASTM A572 Steel Plate is widely used in construction and various applications requiring high strength and good weldability. The designation A572 refers to a series of steel grades that differ primarily in yield strength. Here’s a detailed description of the different grades under A572:

Overview of A572 Steel Grades

A572 Grade 42:

  • Yield Strength: 42 ksi (290 MPa)
  • Noted for good weldability and formability, suitable for various structural applications.

A572 Grade 50:

  • Yield Strength: 50 ksi (345 MPa)
  • It is commonly used in construction due to its strength and versatility, especially in bridges and buildings.

A572 Grade 55:

  • Yield Strength: 55 ksi (380 MPa)
  • It offers a higher strength than Grade 50, making it suitable for more demanding applications.

A572 Grade 60:

  • Yield Strength: 60 ksi (415 MPa)
  • They are used in structures where higher strength is needed, including heavy construction and fabrication.

A572 Grade 65:

  • Yield Strength: 65 ksi (450 MPa)
  • The highest strength among the A572 grades, ideal for large structural components and demanding environments.

Key Properties

  • Weldability: A572 steel plates are known for their excellent weldability, making them suitable for a wide range of fabrication techniques.
  • Strength-to-Weight Ratio: The high yield strength of A572 grades allows for thinner, lighter components that still meet structural requirements.
  • Ductility: The low alloy content provides good ductility and toughness, which is crucial for structures subjected to dynamic loads.
  • Corrosion Resistance: The addition of alloying elements contributes to improved resistance to atmospheric corrosion.

Application

  • Construction
  • Heavy Equipment
  • Transportation

ASTM A572 Chemical Composition

ElementA572 Grade 42A572 Grade 50A572 Grade 55A572 Grade 60A572 Grade 65
Carbon (C)≤ 0.21%≤ 0.23%≤ 0.23%≤ 0.23%≤ 0.23%
Manganese (Mn)1.35% - 1.65%1.35% - 1.65%1.35% - 1.65%1.35% - 1.65%1.35% - 1.65%
Phosphorus (P)≤ 0.04%≤ 0.04%≤ 0.04%≤ 0.04%≤ 0.04%
Sulfur (S)≤ 0.05%≤ 0.05%≤ 0.05%≤ 0.05%≤ 0.05%
Silicon (Si)0.15% - 0.40%0.15% - 0.40%0.15% - 0.40%0.15% - 0.40%0.15% - 0.40%
Copper (Cu)≤ 0.20%≤ 0.20%≤ 0.20%≤ 0.20%≤ 0.20%
Nickel (Ni)≤ 0.40%≤ 0.40%≤ 0.40%≤ 0.40%≤ 0.40%
Chromium (Cr)≤ 0.25%≤ 0.25%≤ 0.25%≤ 0.25%≤ 0.25%
Molybdenum (Mo)≤ 0.10%≤ 0.10%≤ 0.10%≤ 0.10%≤ 0.10%
Vanadium (V)≤ 0.08%≤ 0.08%≤ 0.08%≤ 0.08%≤ 0.08%

ASTM A572 Mechanical Properties

PropertyA572 Grade 42A572 Grade 50A572 Grade 55A572 Grade 60A572 Grade 65
Yield Strength (min)42 ksi (290 MPa)50 ksi (345 MPa)55 ksi (380 MPa)60 ksi (415 MPa)65 ksi (450 MPa)
Tensile Strength (min)60 ksi (415 MPa)65 ksi (450 MPa)70 ksi (485 MPa)75 ksi (515 MPa)80 ksi (550 MPa)
Elongation (in 8 in.)21%20%19%18%17%
Elongation (in 2 in.)21%20%19%18%17%
Charpy V-Notch (min)20 ft-lb @ -20°F20 ft-lb @ -20°F20 ft-lb @ -20°F20 ft-lb @ -20°F20 ft-lb @ -20°F
Reduction of Area30%30%30%30%30%

ASTM A572 Physical Properties

PropertyValue
Density0.283 lb/in³ (7.85 g/cm³)
Modulus of Elasticity29,000 ksi (200 GPa)
Poisson's Ratio0.26 - 0.30
Thermal Conductivity43 - 50 BTU·in/(hr·ft²·°F) (74 - 87 W/m·K)
Coefficient of Thermal Expansion6.5 - 7.5 × 10⁻⁶ /°F (11.7 - 13.5 × 10⁻⁶ /°C)
Specific Heat Capacity0.11 BTU/(lb·°F) (0.46 kJ/(kg·K))
Melting PointApproximately 2,500°F (1,370°C)
Electrical Resistivity10.0 - 10.5 µΩ·m

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