Wide and heavy steel plates for shipbuilding include general-strength shipbuilding steel plate (AE), high-strength shipbuilding steel plate (AH32-FH40), ultra-high-strength shipbuilding steel plate (AH42-FH69), ship boiler plates, Z-direction steel plates for shipbuilding and offshore platforms, etc.
The main technology of shipbuilding steel plate production has developed from high-carbon single element, low-carbon multi-element, to microalloying and composite alloying; from the strength level to high-strength and ultra-high-strength grades, the current The strength is generally up to 450-980M Pa.
The original shipbuilding steel plate used ferrite and pearlite carbon-manganese low-alloy steel. In recent years, it has begun to use quenched and tempered heat-treated nickel-chromium-molybdenum alloying elements mainly HY-80 steel. With the increasing requirements for shipbuilding steel plate HY100 steel was successfully developed by adjusting the content of alloying elements and tempering temperature.
