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US 2026/0159930 A1Published application
Aluminum-iron-plated steel sheet, having excellent mold wear resistance, for hot press forming, and manufacturing method thereof
AssigneePosco
InventorsJin-Keun OH, Seong-Woo Kim, Sang-Heon Kim, Hyo-Sik Chun
Life of this patent
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Abstract
The present invention provides an aluminum-iron-plated steel sheet, having excellent mold wear resistance, for hot press forming, and a manufacturing method thereof.
Claims15
A hot press forming member, comprising;
- a base steel;
- and
- an alloyed layer on the base steel;
- wherein a surface fraction of Ti on a surface of the alloyed layer is 5% or less,
- wherein a fraction of a circle-equivalent diameter of 4 μm or more of Ti on the surface of the alloyed layer is 50% or less,
- wherein a surface fraction of Zn on the surface of the alloyed layer is 5% or less, and
- wherein a fraction of a circle-equivalent diameter of 4 μm or more of Zn on the surface of the alloyed layer is 50% or less.
4 more elements
A hot press forming member, comprising;
- a base steel;
- and
- an alloyed layer on the base steel;
- wherein a surface fraction of Ti on a surface of the alloyed layer is 5% or less,
- wherein a fraction of a circle-equivalent diameter of 4 μm or more of Ti on the surface of the alloyed layer is 50% or less.
2 more elements
A hot press forming member, comprising;
- a base steel;
- and
- an alloyed layer on the base steel;
- wherein a surface fraction of Zn on the surface of the alloyed layer is 5% or less, and
- wherein a fraction of a circle-equivalent diameter of 4 μm or more of Zn on the surface of the alloyed layer is 50% or less.
2 more elements
Dependencies are inferred from the claim text.