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S690 high strength steel plate

S690 high-strength steel plate is a high-strength structural steel plate with excellent mechanical properties and processing properties. It is widely used in fields requiring high strength and good toughness, such as the manufacture of key components in marine engineering, construction machinery, mining machinery structures, etc. S690 steel plate has a high yield strength. According to the EN10025-6 standard, the yield strength range of S690QL1 is ≥690 MPa, the tensile strength is between 770-940 MPa, and the elongation is ≥14%.

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High-strength steel plate

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Chemical composition: usually contains carbon (C) ≤ 0.20%, silicon (Si) ≤ 0.80%, manganese (Mn) ≤ 1.70%, phosphorus (P) ≤ 0.030%, sulfur (S) ≤ 0.025%, chromium (Cr) ≤ 1.50%, nickel (Ni) ≤ 2.00%, molybdenum (Mo) ≤ 0.70%, niobium (Nb) ≤ 0.060%, vanadium (V) ≤ 0.12%, titanium (Ti) ≤ 0.050%, etc.

Implementation standard: EN 10025-6

Mechanical properties: yield strength ≥ 690MPa, tensile strength 770 - 940MPa, elongation ≥ 14%.

Delivery status: generally delivered in the state of quenching + tempering (quenching and tempering).

Features: Ultra-high strength: can withstand extremely large loads, suitable for structures with extreme strength requirements.

Good toughness and ductility: on the basis of high strength, it has a certain toughness to prevent brittle fracture. Application areas: Heavy machinery: such as the boom and frame of large cranes and other key components.
Marine engineering: important supporting structures of offshore platforms.
Pressure vessels: container components that withstand high pressure and extreme working conditions.

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High-strength steel plate