Steel sheet and high strength press hardened steel part having excellent bending anisotropy and method of manufacturing the same

A press hardened steel part, the steel part having a composition comprising, by weight percent:

• C:
• 0.2-0.3%;
• Mn:
• 0.8-2.0%;
• Si:
• 0.1-0.5%;
• Al:
• 0.01-0.1%;
• Ti:
• 0.01-0.1%;
• B:
• 0.0005-0.005%;
• P≤0.040%;
• Ca≤0.01%;
• S≤0.006%;
• N≤0.01%;
• and comprising optionally:
• Cr≤0.4%;
• Mo≤0.3%;
• Nb≤0.1%;
• V≤0.3%;
• wherein Cr+Mo+Nb+V≤0.5%,
• a remainder of the composition being iron and unavoidable impurities resulting from an elaboration process,
• said steel part having a microstructure comprising, in surface fraction, more than 95% of martensite and up to 5% of bainite or ferrite
• said steel part comprising from a bulk to the surface of the steel part:
• the bulk;
• the bulk being topped by a top skin layer and a bottom skin layer occupying an outermost 10% of a thickness of the steel part on either sides of the bulk;
• and
• said bulk comprising an inclusion population wherein a sum of clustering indexes of MnS and TiN/Ti (C,N) inclusions is less than or equal to 300 μm/mm2.