S890QL1 is an ultra-high-strength, quenched, and tempered structural steel (HSLA) under European standard EN10025-6 (EN10025-6), offering a minimum yield strength of 890 MPa, excellent strength-to-weight, toughness, and weldability, used for heavy-duty applications like crane booms, bridges, and heavy equipment requiring load-bearing capacity and vibration resistance. The "QL1" signifies "Quenched & Tempered" with "Low notch toughness testing temperature," making it great for demanding structural projects.
Key Characteristics:
Type: High Strength Low Alloy (HSLA) Structural Steel.
Standard: EN 10025-6.
Heat Treatment: Delivered in a Quenched and Tempered (Q+T) state.
Strength: Minimum yield strength of 890 MPa (hence the '890').
Toughness: Good impact toughness, even at low temperatures (indicated by 'L').
Common Applications:
Construction: Skyscrapers, pylons, heavy framework structures.
Lifting Equipment: Crane booms, mobile equipment.
Transportation: Bridges, rail cars, truck frames, trailers.
Heavy Machinery: Mining, earth-moving, and agricultural equipment.
Designation Breakdown:
S: Structural Steel.
890: Minimum Yield Strength (in MPa).
Q: Quenched and Tempered.
L1: Low notch toughness testing temperature
Mechanical Properties of S890QL High Steel Structural Plate
| Yield Strength | Tensile Strength | Elongation | Hardness | Temperature Resistance |
|---|---|---|---|---|
| 8900 MPa | 1450-1700 MPa | around 10-20% | 355 to 550 HBW | wide range of temperature |
Chemical Properties of S890QL High Steel Structures Plate
| Carbon (C) | Silicon (Si) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) |
|---|---|---|---|---|
| 0.20-0.25% | Up to 0.50% | 0.80-1.60% | Max 0.020% | Max 0.014% |
FAQ:
What is the composition of S890QL1?
S890QL1 is a quenched and tempered high-strength steel with a typical composition of low carbon (≤0.20%), manganese (≤1.70%), and micro-alloying elements like chromium, molybdenum, and nickel, specifically formulated to deliver a minimum impact toughness of 40 Joules at -40°C.
Are S890QL1 and S890QLSteel Plates the Same Product?
S890QL1 and S890QL steel plates are not exactly the same, though they are very similar high-strength structural steels under the EN 10025-6 standard. The key difference is their specified impact toughness requirement: S890QL requires impact energy at -40°C, while S890QL1 requires a tougher -60°C impact, making QL1 suitable for colder applications.
The Equivalent of High Strength Hot Rolled S890ql1 Steel Sheet for Structure
The "QL" in S890QL high steel structures stands for quenched and tempered the thermal process that is used in improving the mechanical characteristics of the steel.