User:Chinasteel/sandbox

China's 921A is a high-strength weldable alloy structural ship steel plate made of 10CrNi3MoV, with continuous casting code L921A. Like HY-80 steel in the United States, it is mainly used for submarine pressure hull structures, with high strength, high toughness, and explosion-proof performance. Pressure resistant shell structural steel, suitable for naval vessels and submarines. Gaogaosteel The use of 921A steel used in warship manufacturing and civil ship manufacturing is different, so the performance of 921A steel is also very different. The tasks carried out by warships may be attacked by artillery shells and torpedoes, so the strength and crack resistance sensitivity should be considered when using steel, and the high temperature resistance should also be considered when using steel for aircraft carrier deck, as well as the width and size of steel plate. Civil ships are only used to transport people and goods. Factors such as safety, comfort, stability, load and economy are considered. Generally, the steel used should meet the requirements of several major classification societies.