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ASTM A36 Plates

ASTM A36 Plates
Material Grade: ASTM A36 Carbon Structural Steel
Standard Specification: ASTM A36 / ASME SA36
Structural Utility: Primary Choice for General Construction
Weldability Edge: Excellent for Welding, Machining, & Bending
Mechanical Feature: Consistent 36,000 PSI Yield Strength
Cost Advantage: Economical Mild Steel Solution
Thickness Range: 4.0 mm to 150 mm
Primary Industries: Civil Construction, Bridges, & Heavy Machinery
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ASTM A36 Plates are the industry standard for carbon structural steel, widely utilized in a vast array of structural applications due to their balanced mechanical properties and cost-effectiveness. As a low-carbon steel, A36 provides a minimum yield strength of 36,000 psi, making it a dependable choice for the construction of bridges, buildings, and oil rigs. Unlike high-alloy steels, ASTM A36 is prized for its exceptional weldability, machinability, and formability, allowing it to be easily fabricated into complex components without the need for specialized heat treatments or complex welding procedures.

The technical utility of ASTM A36 Carbon Steel extends into heavy machinery, automotive components, and general manufacturing. Because it can be readily joined by all standard welding methods (including SMAW, GMAW, and submerged arc welding), it is the premier material for bolted, riveted, or welded structures. These plates are typically supplied in the hot-rolled condition and can be further processed through galvanizing or painting to enhance atmospheric corrosion resistance. Whether utilized for base plates, storage tanks, or heavy equipment frames, ASTM A36 plates provide the structural integrity and versatility required for modern infrastructure and industrial engineering projects.



ASTM A36 Plates Features

  • » Versatile Structural Strength: Provides a reliable minimum yield strength of 36,000 psi, making it the preferred standard for load-bearing components in civil engineering.
  • » Exceptional Weldability: Low carbon content allows for easy joining using all conventional welding methods (SMAW, GMAW, etc.) without the risk of cracking or brittleness.
  • » Superior Machinability: Excellent for drilling, tapping, and milling operations, allowing for fast production of base plates, gussets, and machinery parts.
  • » High Formability: Can be readily bent or cold-formed into various shapes, supporting the fabrication of complex structural brackets and frames.
  • » Reliable Bolted Performance: The material’s ductility ensures it performs exceptionally well in bolted or riveted connections for bridges and building skeletons.
  • » Cost-Effective Solution: Offers one of the best strength-to-cost ratios among structural steels, significantly reducing project overhead for large-scale infrastructure.
  • » Hot-Rolled Stability: Supplied in a hot-rolled condition that provides a consistent grain structure and predictable mechanical properties across large plate surfaces.
  • » Surface Treatment Compatibility: The clean surface finish is highly receptive to protective coatings such as hot-dip galvanizing or industrial primers for enhanced durability.

ASTM A36 Plates Specification

Standards

  • Standard: ASTM A36
  • ASME: ASME SA36
  • UNS Number: K02600
  • Equivalent: EN S235 / DIN 1.0038

Chemistry

  • Carbon (C): 0.25% – 0.29%
  • Manganese (Mn): 0.80% – 1.20%
  • Phosphorus (P): 0.04% Max
  • Sulfur (S): 0.05% Max

Mechanical Data

  • Yield Strength: 36,000 psi (250 MPa)
  • Tensile Strength: 58,000–80,000 psi
  • Elongation: 20% – 23% min
  • Hardness: 119 – 159 Brinell

Physical Info

  • Density: 7.85 g/cm³
  • Melting Point: ~1425 – 1540°C
  • Thermal Cond: 51.9 W/m·K
  • Modulus of Elasticity: 200 GPa

Size Range

  • Thickness: 6 mm to 200 mm
  • Width: 1500 mm / 2000 mm / 2500 mm
  • Length: 6000 mm / 12000 mm
  • Finish: Hot Rolled / Oiled

QC & Testing

  • Cert: EN 10204 3.1 MTC
  • Testing: Tensile & Charpy V-Notch
  • Process: Fully Killed Steel
  • Inspection: Ultrasonic (UT) Tested

ASTM A36 Plates Detailed Specifications

Property Specification
Item Carbon Structural Steel Plates - ASTM A36
Thickness 5mm-150mm
Width 1000mm-4500mm
Length 3000mm-18000mm

ASTM A36 Plates Chemical Composition

Grade C Si Mn P S
ASTM A36 0.25 max. 0.4 max. 0.8-1.2 0.035 max. 0.035 max.

ASTM A36 Plates Mechanical Properties

Tensile strength, kis [MPa] Yield strength, min, kis [MPa] Elongation in 8 in. [200 mm], min, % Elongation in 2 in. [50 mm], min, %
58-80 [400-550] 36 [250] 20 23

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