Characterization of two iron bullets from the royal ammunition factory of Eugi (Spain) by Zalakain I., Berlanga C., Alvarez L., Asa L., Labé P., Rivero P., Valencia J., Rodríguez R.

“…The variation in silicon content could suggest that the foundry temperature under oxidizing environment varied during the casting. The SEM and EDX analyses showed both bullets had manganese sulphide inclusions but only one of the bullets exhibited titanium and vanadium inclusions. …”
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Influence of TiN inclusions and segregation bands on the mechanical properties and ballistic performance during ballistic impact tests in low-alloy high-strength steel by Keke Tong, Haoran Sun, Luxing Duan, Xiurong Zuo

“…With ballistic test at a bullet impact velocity of about 810 m/s, the steel plate displayed the different ballistic performance, forming partially penetrated crater A and the completely penetrated crater B, despite the craters A and B were close together with only about 100 mm. …”
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