Weldox 400 Sheets & Plates

What are Weldox 400 Sheets & Plates?

Weldox 400 is a high-strength structural steel plate that offers exceptional toughness, wear resistance, and dimensional accuracy. It is designed to withstand demanding applications where strength and durability are critical.

Key Functions:

• Provide high strength for structural applications
• Ensure durability under heavy loads
• Offer good weldability and fabrication
• Deliver reliable performance in harsh environments

Chemical Composition of Weldox 400

Typical Composition:

• Carbon (C): ≤ 0.20%
• Manganese (Mn): ≤ 1.60%
• Silicon (Si): ≤ 0.50%
• Phosphorus (P): ≤ 0.025%
• Sulfur (S): ≤ 0.010%
• Alloying Elements: Micro-alloyed for strength and toughness

The controlled composition ensures a balance of strength, toughness, and weldability.

Key Features of Weldox 400 Sheets & Plates

• High yield strength (minimum 400 MPa)
• Excellent weldability and fabrication
• Good impact toughness
• Superior load-bearing capacity
• Lightweight structure compared to conventional steel
• Good resistance to wear and deformation
• Cost-effective solution for structural applications

Mechanical Properties

• Yield Strength: ≥ 400 MPa
• Tensile Strength: ~500–650 MPa
• Elongation: ~19–23%
• Impact Strength: High

Physical Properties

• Density: ~7.85 g/cm³
• Melting Point: ~1420–1460°C
• Modulus of Elasticity: ~210 GPa
• Thermal Conductivity: ~50 W/m•K

Corrosion Resistance

Weldox 400 sheets and plates offer:

• Moderate corrosion resistance
• Suitable for coated or painted applications
• Can be protected with surface treatments for enhanced durability

Heat Treatment

Weldox 400 is typically supplied in a thermo-mechanically rolled condition.

Process:

• Controlled rolling and cooling
• Optional stress relieving if required

Weldability

Weldox 400 offers excellent weldability.

Welding Methods:

• MIG (GMAW)
• TIG (GTAW)
• SMAW

Best Practices:

• Preheating may be required for thicker sections
• Use low hydrogen electrodes
• Control heat input

Machinability

• Good machinability
• Use standard cutting tools
• Maintain appropriate speeds and feeds
• Apply coolant for better tool life

Standards & Specifications

• EN 10025-6 (equivalent grades)
• S400 / S420 structural steel equivalents
• Manufacturer-specific standards (SSAB Weldox series)

Available Types of Sheets & Plates

• Hot Rolled Plates
• Structural Sheets
• Cut-to-Size Plates
• Custom Fabricated Plates

Sizes & Specifications

• Thickness: 4 mm to 100 mm
• Width: Up to 3000 mm
• Length: Up to 12000 mm

Surface Finish Options:

• Mill Finish
• Shot Blasted
• Painted / Coated

Applications of Weldox 400 Sheets & Plates

• Construction Industry – Structural frameworks and bridges
• Heavy Equipment – Load-bearing machinery parts
• Mining Industry – Equipment and support structures
• Transport Industry – Truck bodies and trailers
• Cranes & Lifting Equipment – Structural components
• Industrial Fabrication – General engineering structures

Quality Testing & Inspection

• Chemical composition testing
• Mechanical testing
• Ultrasonic testing
• Dimensional inspection
• Surface quality checks

Mill Test Certificates (MTC) and third-party inspection reports are provided.

Packaging & Delivery

• Standard industrial packaging
• Protective coating if required
• Proper labeling and traceability
• Safe and timely global delivery

Why Choose Virami Steel Hub?

• Reliable Weldox 400 supplier in Mumbai
• Large stock availability
• Competitive pricing
• Custom cutting and fabrication
• Compliance with industry standards
• Strong export network
• Dedicated customer support

Conclusion

Weldox 400 Sheets & Plates are an ideal choice for applications requiring high strength, durability, and excellent weldability. Their superior mechanical properties make them suitable for structural, construction, and heavy engineering applications.

Virami Steel Hub delivers high-quality Weldox 400 products that ensure reliability, performance, and long-term value.