Astm A36 Steel Plate
Heavy-duty structural steel plate engineered for maximum load-bearing capacity in demanding construction and industrial structural applications
Premium ASTM A36 hot-rolled steel plate combining exceptional structural strength with superior weldability and fabrication characteristics. Available in thicknesses from 1/8" to 4" and various dimensions, this material provides the ideal foundation for major structural projects, machinery fabrication, and critical infrastructure applications.
Quick Specifications
- Yield Strength (0.2% offset)
- Minimum 36,000 psi (250 MPa)
- Tensile Strength
- 58,000-80,000 psi (400-550 MPa)
- Elongation (in 8 inches)
- Minimum 23%
- Standard Thickness Range
- 1/8" to 4" (3.18 mm to 101.6 mm)
- Standard Width
- 48" to 96" (1,219 mm to 2,438 mm)
- Standard Length
- Up to 240" (6,096 mm), custom sizes available
Standards & Certifications
Product Description
ASTM A36 steel plate represents the industry-standard solution for major structural applications demanding reliable load-bearing capacity, predictable mechanical properties, and efficient fabrication. Manufactured to ASTM A36 specifications through controlled hot-rolling processes, these plates achieve minimum yield strength of 36,000 psi and minimum tensile strength of 58,000 psi, providing substantial structural capacity for beams, columns, frames, and assemblies. The hot-rolling process ensures consistent mechanical properties throughout plate thickness, eliminating the segregation and property variations inherent in thick-section castings or forgings.
ASTM A36 plate manufacturing incorporates rigorous quality control including chemical composition verification, mechanical property testing, and inspection to ensure compliance with specification requirements. The material's exceptional weldability with PCM less than 0.25 enables efficient fabrication using standard welding processes without complex preheat requirements or specialized welding procedures. The homogeneous microstructure developed through hot-rolling provides superior toughness and impact resistance compared to alternative materials, ensuring reliable performance under static and dynamic loading conditions across diverse environmental exposures.
The broad availability of ASTM A36 plate in numerous thickness, width, and length combinations facilitates efficient project planning and material sourcing. Standard thickness range from 1/8" to 4" accommodates applications ranging from light structural work to massive load-bearing members. Plate dimensions are commonly manufactured to 96" width and available in lengths up to 240 inches, with custom sizing available for specific project requirements. This standardization enables competitive pricing and reliable supply chain management for projects ranging from single plates to large fabrication projects.
Applications utilizing ASTM A36 steel plate benefit from proven reliability demonstrated across decades of successful service in bridges, building structures, machinery, and specialized industrial equipment. The material's response to standard fabrication techniques including flame cutting, drilling, bending, and welding enables efficient on-site and shop fabrication without specialized equipment or procedures. The material's cost-effectiveness combined with superior structural performance ensures ASTM A36 remains the preferred specification for structural engineers and fabricators worldwide.
Specifications
| Yield Strength (0.2% offset) | Minimum 36,000 psi (250 MPa) |
| Tensile Strength | 58,000-80,000 psi (400-550 MPa) |
| Elongation (in 8 inches) | Minimum 23% |
| Standard Thickness Range | 1/8" to 4" (3.18 mm to 101.6 mm) |
| Standard Width | 48" to 96" (1,219 mm to 2,438 mm) |
| Standard Length | Up to 240" (6,096 mm), custom sizes available |
| Carbon Content | 0.25-0.29% |
| Manganese Content | 0.75-1.25% |
| Carbon Equivalent (PCM) | Maximum 0.25 |
| Density | 0.284 lb/in³ (7,850 kg/m³) |
| Weight per Square Foot (1" thickness) | 40.8 lbs/ft² |
Chemical Composition
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.25-0.29% |
| Silicon (Si) | 0.15-0.30% |
| Manganese (Mn) | 0.75-1.25% |
| Phosphorus (P) | Maximum 0.04% |
| Sulfur (S) | Maximum 0.05% |
| Copper (Cu) | 0.20% (optional for increased corrosion resistance) |
| Iron (Fe) | Remainder |
Mechanical Properties
| Property | Value |
|---|---|
| Modulus of Elasticity | 29,000 ksi (200 GPa) |
| Shear Modulus | 11,000 ksi (76 GPa) |
| Density | 0.284 lb/in³ |
| Thermal Conductivity | 50 W/m·K |
| Coefficient of Thermal Expansion (20-100°C) | 11 x 10⁻⁶ /°C |
| Impact Strength (Charpy V) | Minimum 15 ft·lbf (20 J) at 70°F |
Key Features & Advantages
Applications
Building Structure and Framing
Utilized as primary structural members including beams, columns, and floor plates in multi-story commercial buildings, institutional facilities, and industrial structures. ASTM A36 plate provides the foundation for safe, economical building construction meeting modern design standards and load requirements.
Bridge and Infrastructure Construction
Applied in bridge deck plates, girders, and structural components for highway, rail, and pedestrian bridge construction. The material's proven durability and fatigue resistance ensure reliable performance under repeated heavy traffic loading and environmental exposure throughout bridge service life.
Heavy Equipment and Machinery Fabrication
Employed in machinery bases, fabricated frames, and support structures for industrial equipment and processing machinery. ASTM A36 plate enables construction of robust, stable platforms supporting precise equipment operation and substantial mechanical loads inherent in manufacturing processes.
Pressure Vessel and Tank Construction
Utilized in fabricated tanks, vessels, and pressure equipment where reliable structural strength and weldability ensure safe operation under internal pressure and environmental exposure. Code-compliant fabrication using ASTM A36 plate ensures compliance with ASME and international pressure equipment standards.
Transportation and Container Applications
Applied in truck beds, trailers, shipping containers, and specialized transport equipment where structural strength and fatigue resistance ensure reliable operation under dynamic loading and rough handling throughout service life.
Specialized Structural and Fabrication Projects
Employed in custom engineered structures, architectural elements, and specialized applications where ASTM A36 plate properties match engineering requirements. The material's versatility enables efficient fabrication of unique designs while maintaining structural integrity and cost-effectiveness.
Frequently Asked Questions
What is the significance of different thickness tolerances for ASTM A36 plate?
How should ASTM A36 plate be protected from corrosion in outdoor installations?
Can thick ASTM A36 plate (3"-4") be welded without preheat?
What is the typical weight for a 4'x8'x1/2" ASTM A36 steel plate?
How are ASTM A36 plates typically furnished and what are lead times?
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