Q690D high strength steel plate
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Q690D high strength steel plate
Product Details
Chemical composition: usually contains carbon (C) ≤ 0.18%, silicon (Si) ≤ 0.60%, manganese (Mn) ≤ 2.00%, phosphorus (P) ≤ 0.025%, sulfur (S) ≤ 0.020%, niobium (Nb) ≤ 0.11%, vanadium (V) ≤ 0.12%, titanium (Ti) ≤ 0.20%, aluminum (Al) ≥ 0.015%, etc.
Mechanical properties: yield strength ≥ 690MPa, tensile strength 770 - 940MPa, elongation ≥ 10%. Low temperature impact test temperature is -20℃, and the impact absorption energy is not less than 34J.
Delivery status: generally delivered in the quenching and tempering (quenching + tempering) state.
Features: Ultra-high strength: has excellent bearing capacity, suitable for heavy-load structures.
Good low temperature toughness: can still maintain stable performance in low temperature environment.
Application areas: large cranes: such as key components such as crane arms and frames.
Coal mining machinery: such as hydraulic supports, etc.
Bridge engineering: especially in the construction of large bridges in cold regions.
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