A514 - Quenched & Tempered Structural Plate

Mechanical Properties

Yield Strength: ~690 MPa (100 ksi)

Tensile Strength: 760-895 MPa (110-130 ksi)

Hardness: ~235-300 HBW (Brinell Hardness)

Material Type: Quenched and Tempered Low-Alloy Steel

Typical Thickness Range: 6mm - 150mm

Characteristics

• Not primarily an abrasion plate but used in wear applications
• High strength-to-weight ratio - Excellent structural properties
• Good impact resistance - Superior toughness
• Excellent weldability - Easier to weld than AR grades
• Good formability - Can be formed and fabricated readily

Applications

• Heavy lifting equipment
• Crane booms and structural components
• Structural components subjected to wear
• Mobile equipment frames
• Mining equipment structures
• Pressure vessels
• Construction machinery frames
• Heavy-duty truck frames

Advantages

• High strength - Allows lighter weight designs
• Excellent toughness - Superior impact resistance
• Good weldability - Easier fabrication than AR steels
• Moderate wear resistance - Suitable for light to moderate wear
• Cost-effective - Good balance of properties and cost

Processing Characteristics

Cutting: Can be cut using standard methods including plasma, laser, and oxy-fuel cutting.

Forming: Good formability. Can be bent, rolled, and formed with standard equipment.

Welding: Excellent weldability. Preheat typically not required for thicknesses under 25mm. Use low-hydrogen electrodes.

Machining: Moderate machinability. Easier to machine than AR grades.

Available Grades

A514 is available in multiple grades (A through S) with varying chemical compositions to suit different applications and thickness ranges. Common grades include:

• Grade A: General purpose, carbon-manganese
• Grade B: Chromium-molybdenum alloy
• Grade E: Chromium-molybdenum-vanadium
• Grade F: Manganese-molybdenum-nickel

Comparison with Other Grades

vs. AR400: A514 offers better toughness and weldability but lower abrasion resistance.

vs. Mild Steel: A514 provides significantly higher strength, allowing weight reduction in structural applications.

Best for: Structural applications requiring high strength and good toughness with moderate wear resistance requirements.