What is the chemical composition of Q690E steel?

Q690E steel plate standard: GB T16270-2009

Q690E material belongs to high-strength welded structural steel.

Q690 steel, where Q represents the yield strength, 690 represents the yield strength value. Q690 steel plate with different grades behind it represents the impact temperature of Q690. The impact of grade D steel plate is -20°C. The impact of grade E steel plate is -40°C. The impact of C grade steel plate is 0°C

Chemical composition of Q690E steel

Phosphorus (P): ≤0.025, Sulfur (S): ≤0.020, Niobium (Nb): ≤0.11, Vanadium (V): ≤0.12, Titanium (Ti): ≤0.20, Chromium (Cr): ≤1.00, Nickel ( Ni): ≤0.80, copper (Cu): ≤0.80, nitrogen (N): ≤0.015, molybdenum (Mo): ≤0.30, boron (B): ≤0.004, aluminum (Al): ≥0.015

Q690E steel plate has high yield strength and tensile strength, and is widely used in coal mining machinery and engineering machinery. Such as hydraulic supports, port cranes, flatbed trucks, etc.