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Grade 140ksi 0.375 in. x 96 in. x 240 in. steel plate front view.
Grade 140ksi 0.375 in. x 96 in. x 240 in. steel plate right view.
Grade 140ksi 0.375 in. x 96 in. x 240 in. steel plate top view.

140 KSI Ultra-High Strength Structural-Quality Steel Plate

140 KSI steel plate is an ultra-high-strength, structural-quality heat-treated plate with a minimum yield strength of 140 ksi. It is commonly used in applications where high strength, formability and reduced weight are critical.

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Features

  • Minimum yield strength of 140 ksi (960 MPa).

  • Quenched and tempered for increased strength.

  • Composition and heat treatment processes differ between mills, but yield strength is guaranteed to be at least 140 ksi.

  • Mill test reports are supplied with each order.

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Product Details

Grade Thickness Width Length
140 ksi 3/16" – 1/2" 48" – 96" Up to 480"

Grade Comparison

Frequently Asked Questions

Learn more about 140 KSI steel plate. 
130 KSI and 140 KSI steel plates are both ultra-high-strength, heat-treated structural-quality plates used when high strength-to-weight performance is important. The main difference is minimum yield strength: 130 KSI plate has a minimum yield strength of 130,000 psi, while 140 KSI plate has a minimum yield strength of 140,000 psi. Both may offer weldability and formability when proper fabrication procedures are followed, but 140 KSI is typically selected when the project requires the higher minimum yield strength.
140 KSI steel plate is an ultra-high-strength, structural-quality, heat-treated plate with a minimum yield strength of 140 ksi. It is used in applications that require high strength-to-weight performance, including semi-trailers, crane booms, truck frames, construction equipment, forestry equipment, mining equipment and other heavy-duty structural applications.
140 KSI refers to the plate’s minimum yield strength of 140,000 psi, or approximately 960 MPa. Yield strength measures the stress a material can withstand before permanent deformation begins, so 140 KSI plate is used when a project requires very high load-bearing performance.
140 KSI steel plate is heat-treated to achieve the high yield strength, toughness and structural performance needed for demanding applications. Quenching and tempering are commonly used to develop the mechanical properties required for crane booms, heavy-duty transport equipment, forestry equipment, mining equipment and other high-strength applications.
140 KSI steel plate can be welded and formed when proper procedures are used for the grade, thickness and application. Because it is an ultra-high-strength heat-treated plate, welding and forming should follow appropriate fabrication practices to protect the plate’s performance and reduce the risk of cracking during bending or fabrication.
140 KSI steel plate is specified primarily by minimum yield strength and performance requirements, not by one fixed chemical formula. Producing mills may use different chemical compositions and heat-treatment processes to achieve the required 140 ksi minimum yield strength, and mill test reports are supplied with each order to verify the material’s properties.