What is 140 ksi Minimum Yield Steel Plate?
140 ksi minimum yield steel plate is a heat-treated, ultra-high-strength structural steel plate that delivers outstanding durability, formability, and weldability. With a guaranteed yield strength of at least 140 ksi (960 MPa), this plate is engineered for the most demanding load-bearing applications.
Key Advantages
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Guaranteed 140 ksi minimum yield strength
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Superior tensile strength and impact resistance
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Good weldability and formability
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Suitable for high-load structural applications
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Available with traceable Mill Test Reports
Standard Plate Sizes
| Grade | Thickness | Width | Length |
|---|---|---|---|
| 140 ksi / 960 MPa | 3/16″ – 1/2″ | 48″ – 96″ | Up to 480″ |
Custom cuts and sizes available upon request.
🔬 Typical Mechanical Properties
| Property | Value |
|---|---|
| Minimum Yield Strength | 140 ksi (960 MPa) |
| Typical Tensile Strength | 150 – 165 ksi |
| Elongation in 2” | 12 – 16% |
| Heat Treatment | Quenched & Tempered (Q&T) |
| Brinell Hardness | 300 – 360 HB |
📊 Comparison Table: 130 ksi vs. 140 ksi Steel Plates
| Feature | 130 ksi Steel Plate | 140 ksi Steel Plate |
|---|---|---|
| Minimum Yield Strength | 130 ksi (890 MPa) | 140 ksi (960 MPa) |
| Tensile Strength | 140 – 160 ksi | 150 – 165 ksi |
| Typical Use Cases | Semi trailers, cranes | Truck frames, booms |
| Weldability | Good with preheat | Excellent with preheat |
| Thickness Availability | Up to 4″ | Up to 1/2″ |