ASTM A709 Steel Plate

Product AttributeDescription
Product NameASTM A709 Steel Plate
Material TypeCarbon and High-Strength Low-Alloy Steel
HardnessTypically 125-185 HB (Brinell Hardness)
Thickness Range6 mm to 150 mm
Width Range1,000 mm to 3,500 mm
Length Range2,000 mm to 12,000 mm
Delivery OptionsStandard delivery, Cut-to-size, Custom shapes, Bulk orders
Standard ComplianceASTM A709 / A709M
Categories: ,

Description

Product Description

ASTM A709 Steel Plate is a high-strength, low-alloy structural steel used in bridge construction and other structural applications. It is specifically designed for improved toughness and durability, withstanding harsh environmental conditions such as weathering and corrosion. ASTM A709 steel plate offers excellent weldability, high strength, and toughness, making it ideal for critical infrastructure projects.

Key Features of ASTM A709 Steel Plate:

  • High Strength: Ensures superior load-bearing capacity for large structures.
  • Weathering Resistance: Available in grades with enhanced atmospheric corrosion resistance, which is critical for long-term outdoor exposure.
  • Toughness: High impact resistance, especially in cold temperatures, making it suitable for various climates and seismic areas.
  • Weldability: Excellent for welding, and crucial for constructing large structures like bridges.
  • Durability: Designed to last in extreme conditions, reducing maintenance costs and extending the life of structures.

Common Grades of ASTM A709:

  • Grade 36: Standard structural steel for lighter, non-critical applications.
  • Grade 50: A more robust option with a minimum yield strength of 50,000 psi.
  • Grade 50W: Weathering steel with corrosion resistance, often used for unpainted structures.
  • Grade 100 & 100W: High-strength steel for large-scale, high-stress applications.

Common Applications:

  • Bridge construction (both small and large span bridges)
  • Highway overpasses
  • Infrastructure projects requiring long-lasting, low-maintenance materials

ASTM A709 Steel Plate is a versatile and reliable choice for engineers and architects working on large-scale infrastructure projects where performance and longevity are key.

ASTM A709 Chemical Composition

ElementGrade 36 (%)Grade 50 (%)Grade 50W (%)Grade 100 (%)Grade 100W (%)
Carbon (C)0.26 max0.23 max0.19 max0.20 max0.20 max
Manganese (Mn)0.80-1.350.50-1.500.50-1.500.70-1.600.70-1.60
Phosphorus (P)0.04 max0.04 max0.04 max0.03 max0.03 max
Sulfur (S)0.05 max0.05 max0.05 max0.05 max0.05 max
Silicon (Si)0.15-0.400.15-0.400.15-0.400.15-0.400.15-0.40
Copper (Cu)--0.20-0.400.35 max0.35 max
Nickel (Ni)--0.40 max0.40 max0.40 max
Chromium (Cr)--0.40-0.650.40-0.650.40-0.65
Molybdenum (Mo)--0.15 max0.15 max0.15 max
Vanadium (V)--0.02-0.100.02-0.100.02-0.10

ASTM A709 Mechanical Properties

PropertyGrade 36Grade 50Grade 50WGrade 100Grade 100W
Yield Strength (ksi)36 min50 min50 min100 min100 min
Tensile Strength (ksi)58-8065-8570-95110-130110-130
Elongation (%)2018161414
Charpy V-Notch (ft-lbs)N/A15 min15 min35 min35 min

ASTM A709 Physical Properties

PropertyValue
Density7.85 g/cm³ (7850 kg/m³)
Elastic Modulus200 GPa
Poisson’s Ratio0.3
Thermal Conductivity43 W/m-K
Melting Point1425-1530°C
Specific Heat Capacity486 J/kg-K

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