Application and heat treatment of S690QL1 steel plate

Ordinary medium and thick steel plate S690QL1 steel plate is a kind of deoxidized steel. The oxygen content of the steel liquid is relatively high, and a lot of gas will be produced during the production process to make the steel liquid boil, so it is also called boiling steel. Advantages: this kind of steel plate has smooth surface, good quality and easy processing. Because this kind of steel plate has no concentrated shrinkage cavity, the amount of deoxidizer is very small and the price is lower than other steel plates.

Among them, Russia's crude steel output was 71.6 million tons, down 0.7% year on year; Ukraine's crude steel output was 20.8 million tons, down 1.2% year on year. S690QL1 steel plate, Crude steel production in the Middle East was 45.3 million tons, up 19.2% year on year. The annual output of crude steel in South America is 41.2 million tons, down 8.4% year on year.

S690QL1 steel plate, Q460 includes the following steel grades: Q460C, Q460NC, Q460ND, Q460NE, Q460MC, Q460MD, Q460ME. Q460MC steel plate executive standard: GB / T1591-2018 low alloy high strength structural steel standard. Delivery status of Q460MC steel plate: TMCP. Q460MC steel plate chemical composition: C≤0.16, Si≤0.60, Mn≤1.70, P≤0.030, S≤0.030, Nb 0.01-0.05, V 0.01-0.12, Ti 0.006-0.05, Cr≤0.30, Ni≤0.80, Cu≤0.40, Mo≤0.20, N≤0.015, Als≥0.015.