Products Description
S960Q steel, the symbol S is for structural steel, 960 for the minimum yield strength in thickness under 50mm. Q mean the delivery condition in quenched and tempered.
EN10025-6 S960Q hot rolled high strength structural steel plates are mainly used in the manufacture of heavy lifting equipment, concrete pump vehicles and other engineering machinery.
Chemical Composition of EN 10025-6 S960Q High Strength Structural Steel Plateon
| Grade | S960Q | |
|---|---|---|
| Element | Standard Specification (Max. %) | Typical / Common Value |
| Carbon (C) | ≤ 0.20 % | ~0.18 % |
| Silicon (Si) | ≤ 0.80 % | ~0.30 % |
| Manganese (Mn) | ≤ 1.70 % | ~1.50 % |
| Phosphorus (P) | ≤ 0.020 % | ≤ 0.015 % |
| Sulfur (S) | ≤ 0.010 % | ≤ 0.003 % |
| Chromium (Cr) | * | ~0.50 % |
| Nickel (Ni) | * | ~1.50 % |
| Molybdenum (Mo) | * | ~0.50 % |
| Vanadium (V) | ≤ 0.10 % | ~0.05 % |
| Boron (B) | ≤ 0.005 % | ~0.002 % |
| Copper (Cu) | ≤ 0.50 % | ~0.20 % |
| Niobium (Nb) | ≤ 0.05 % | ~0.03 % |
| Titanium (Ti) | ≤ 0.05 % | ~0.01 % |
| Aluminum (Al) | ≥ 0.015 % (if used) | ~0.04 % |
Mechanical Properties of EN 10025-6 S960Q High Strength Structural Steel Plate
| Grade | Property | Value | Notes |
|---|---|---|---|
| S960Q | Yield Strength (ReH) | ≥ 960 MPa (at thicknesses ≤ 30mm) | The stress at which it begins to deform plastically. This is its primary defining feature. |
| Tensile Strength (Rm) | 980 - 1150 MPa | The stress at which it fails. There is a narrow range between yield and tensile strength. | |
| Elongation (A₅) | ≥ 8% (depends on thickness) | A measure of ductility. Lower than mild steel but impressive for its strength level. | |
| Impact Toughness (KV) | ≥ 40J at -20°C | Excellent resistance to brittle fracture, even at very low temperatures. Crucial for safety. | |
| Weldability | Good, but requires strict procedures | Can be welded successfully but needs pre-heating, low-hydrogen electrodes, and controlled heat input to avoid cracking in the Heat-Affected Zone (HAZ). |
Applications of EN 10025-6 S960Q High Strength Structural Steel Plate
Due to its extreme strength, S960Q is used in applications where reducing weight is critical or where extreme loads are expected. Its high cost means it's used selectively.
Core Application Scenarios
1. Construction Machinery: Crane booms (30% weight reduction), excavator arms, mining dump truck bodies (impact resistance lifespan extended to 4.5 years).
2. Construction and Bridges: Core support columns for ultra-high-rise buildings, anchorage structures for long-span suspension bridges (e.g., Hong Kong's S960 steel bridge).
3. Energy and Marine Engineering: Offshore wind turbine towers, ship pressure bulkheads (corrosion resistance + storm impact resistance).
4. Special Equipment: Wear-resistant and impact-resistant components such as hydraulic supports, bulldozer blades, and drill rig support frames.