What is 130 ksi Min-Yield Steel Plate?
130 ksi minimum yield steel plate is a premium ultra-high-strength structural plate that has undergone quenching and tempering (Q&T). This heat treatment process greatly enhances its strength and toughness, making it ideal for heavy-duty applications such as semi-trailers, cranes, forestry equipment, and mining machinery.
It is engineered to deliver a minimum yield strength of 130 ksi (≈ 890 MPa), regardless of the specific alloying or heat treatment method used by the mill. Every order is backed by a Mill Test Report (MTR) to guarantee quality compliance.
Key Features
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Minimum 130 ksi yield strength
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Quenched and tempered for superior strength
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Excellent strength-to-weight ratio
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Guaranteed performance, verified by MTRs
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Used in load-bearing, impact-resistant applications
📐 Standard Sizes Available
| Grade | Thickness | Width | Length |
|---|---|---|---|
| 130 ksi / 890 MPa Plate | 3/16″ – 4″ | 48″ – 120″ | Up to 480″ |
Custom dimensions may be available upon request.
🔬 General Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (min) | 130 ksi (≈ 890 MPa) |
| Tensile Strength (typical) | 140 – 160 ksi |
| Elongation in 2” (min) | 14 – 18% |
| Brinell Hardness | 280 – 340 HB |
| Heat Treatment | Quenched & Tempered |
📊 130 ksi Plate vs. A514 Grade Q (Q&T Comparison)
| Feature | 130 ksi Steel Plate | A514 Grade Q |
|---|---|---|
| Min. Yield Strength | 130 ksi | 100 ksi |
| Thickness Range | Up to 4″ | Up to 8″ |
| Primary Application | Trailers, Cranes, Mining | Bridges, Heavy Machines |
| Weldability | Moderate (requires care) | Good with preheat |
| Machinability | Moderate to High | High |
| Heat Treatment | Q&T | Q&T |
✅ Practical Checklist: Before Using 130 ksi Steel Plate
| ✅ Task | ✔ Done |
|---|---|
| Confirm yield strength requirement for your project | |
| Select appropriate thickness and dimensions | |
| Verify mechanical properties via Mill Test Report (MTR) | |
| Ensure welding specs include preheat guidelines | |
| Perform NDT inspections after fabrication |