The factors affecting the properties of A690 marine steel plate are as follows: chemical composition, melting and casting, rolling and heat treatment process, etc., mainly chemical composition.
The contents of sulfur and phosphorus directly affect the performance of A690 marine steel plate in the direction of thickness. Sulfur is the most segregated element in continuous casting billet.
Sulphurization will cause the thermal embrittleness of A690 marine steel plate, which causes cracks in the high temperature forging and pressing of A690 marine steel plate, and produces a lot of porosity and pores during welding.
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