Cast steel shot s330
Our steel shot goes throughsmelting, forming, selection, quenching,tempering, crushing and screeningproduction procedures.Proceeding secondary quenching treatment to refine the grain, make products internal micro structure more compact, and enhance the impact toughness,the micro structure from Marten site become Bainite. The Hollow particles<5%.
Precise size control make the products meet the America SAE J444 standard, our customer used our product, said quality same with ERVIN.And fatigue life is 2800-3000 times.
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