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https://www.ste-mart.com/inclusion-rating.htm

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Because the non-metallic inclusion destroys metal matrix's continuity and uniformity, it is easy to concentrate stress, result in the decline of mechanical properties, and early failure of the material. The degree of influence mainly depends on the shape, size, distribution and aggregation state of the inclusion. Therefore, it is important to consider the quantity and distribution of inclusions when assessing the quality of steel.

STEMart can carry out inclusion rating on steel according to ISO, ASTM, and other standards.