ABS A steel plates etc. shipbuilding steel materials should have good crack-arresting property

ABS A steel plates etc. shipbuilding steel materials should have good crack-arresting property.

In recent years, the breakage accidents of bulk vessels and the reef-striking accidents of giant oil tankers have been increasing. In addition to the design improvement, the ABS A steel plates etc. shipbuilding steel materials must have good crack-arresting property against brittle crack propagation when the ship's collision and the large plastic deformation (10%) occurs.

The ABS A steel plates etc. shipbuilding steel materials with superfine grain structure on the surface can be produced by TMCP process. The thickness direction property is uniform and the ability to prevent brittle crack propagation of TMCP ABS A steel plates etc. shipbuilding steel materials is good. TMCP ABS A steel plates etc. shipbuilding steel materials has been successfully applied to the location of maximum shear stress of LPG vessels and bulk vessels.