Ultra-High Strength Steel Plate

Ultra-High Strength Steel Plate
Ultra-high strength steel plate (UHSS) refers to structural steel with a minimum yield strength ≥ 800 MPa (up to 1300 MPa and higher), manufactured via advanced smelting, controlled rolling & cooling, and heat treatment processes . It features ultra-high strength, excellent low-temperature toughness, reliable weldability, and superior cold formability, with stable mechanical properties, precise dimensional tolerances, and good surface quality .
Ideal for weight-critical load-bearing structures in construction machinery (cranes, concrete pumps), heavy vehicles, mining equipment, and offshore/defense applications, enabling lightweight design without compromising safety .
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Ultra-High Strength Steel Plate

1. Mechanical Properties (Typical Grades) 


Grade Yield Strength   (MPa, min) Tensile Strength   (MPa) Elongation   (%, min) Impact Toughness (-40°C, J, min)

800 MPa Grade (e.g., BS800) 800 830–1050 12 34

960 MPa Grade (e.g., Strenx 960) 960 980–1150 10 27

1300 MPa Grade (e.g., Strenx 1300) 1300 1400–1600 7 20


2. Dimension Range 


- Thickness: 3.0–100.0 mm (customizable: 2.0–20 mm)

- Width: Up to 2900 mm

- Length: Up to 14630 mm (cut-to-length available)


3. Chemical Composition (Heat Analysis, wt%)


Element  C     Si     Mn     P       S       Cr+Mo+Nb+V

Content ≤0.20 ≤0.60 ≤1.80 ≤0.020 ≤0.010 ≤1.50


4. Delivery & Standards 


- Delivery Condition: Quenched & Tempered (Q&T) / Thermomechanically Rolled (TMCP)

- Standards: EN 10025, ASTM A514/A517, GB/T 16270

- Surface: Mill finish, shot-blasted, or primed


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