Superimposed blank for hot stamping, method for producing superposed hot stamped compact, and superposed hot stamped compact

摘要

PROBLEM TO BE SOLVED: To solve the problem relating to the difference in temperature rising rate between a superposed portion and one sheet portion, and further improve the corrosion resistance of plating after hot stamping. A first steel plate and at least one second steel plate, which has an area smaller than that of the first steel plate and is connected to the surface of the first steel plate via welding points, The steel sheet is a plated steel sheet having an aluminum-based plating layer on both sides of the first steel sheet, and the second steel sheet is a plated steel sheet having an aluminum-based plating layer on both sides of the second steel sheet, The adhesion amount of the aluminum-based plating layer on the first steel plate is W1 (g / m2) as an average adhesion amount on both sides, and the aluminum-based plating on the surface of the second steel plate that is not in contact with the first steel plate. The adhesion amount of the layer is W2 (g / m2), both W1 and W2 are in the range of 20 g / m2 or more and 120 g / m2 or less, and the relationship of the formula (1) and the formula (2) is satisfied. Overfilled blank for hot stamping. [Selection diagram] Figure 1