An overlapped blank for hot stamping comprising: a first steel sheet ; and at least one second steel sheet connected to a surface of the first steel sheet via a welding point and smaller in area than the first steel sheet , wherein: the first steel sheet is a plated steel sheet having an aluminum-based plated layer on both faces of the first steel sheet , and the second steel sheet is a plated steel sheet having an aluminum-based plated layer on both faces of the second steel sheet; a coating weight of the aluminum-based plated layer on the first steel sheet is W1 (g/m 2 ) in terms of an average coating weight on both the faces; a coating weight of the aluminum-based plated layer on a surface on a side not in contact with the first steel sheet in the second steel sheet is W2 (g/m 2 ); and each of the W1 and the W2 is within a range of 20 g/m 2 or more and 120 g/m 2 or less, and characterized in that each of the W1 and the W2 satisfies relationships of following Expression and Expression , 30 ≤ W 1 − W 2 ≤ 100 W1/W2 2 × t1/t2 ≥ 1.5 where t1 (mm) is a sheet thickness of the first steel sheet and t2 (mm) is a sheet thickness of the second steel sheet in the Expression . a first steel sheet ; and at least one second steel sheet connected to a surface of the first steel sheet via a welding point and smaller in area than the first steel sheet , wherein: the first steel sheet is a plated steel sheet having an aluminum-based plated layer on both faces of the first steel sheet , and the second steel sheet is a plated steel sheet having an aluminum-based plated layer on both faces of the second steel sheet; a coating weight of the aluminum-based plated layer on the first steel sheet is W1 (g/m 2 ) in terms of an average coating weight on both the faces; a coating weight of the aluminum-based plated layer on a surface on a side not in contact with the first steel sheet in the second steel sheet is W2 (g/m 2 ); and each of the W1 and the W2 is within a range of 20 g/m 2 or more and 120 g/m 2 or less, and characterized in that each of the W1 and the W2 satisfies relationships of following Expression and Expression , 30 ≤ W 1 − W 2 ≤ 100 W1/W2 2 × t1/t2 ≥ 1.5 where t1 (mm) is a sheet thickness of the first steel sheet and t2 (mm) is a sheet thickness of the second steel sheet in the Expression . the first steel sheet is a plated steel sheet having an aluminum-based plated layer on both faces of the first steel sheet , and the second steel sheet is a plated steel sheet having an aluminum-based plated layer on both faces of the second steel sheet; a coating weight of the aluminum-based plated layer on the first steel sheet is W1 (g/m 2 ) in terms of an average coating weight on both the faces; a coating weight of the aluminum-based plated layer on a surface on a side not in contact with the first steel sheet in the second steel sheet is W2 (g/m 2 ); and each of the W1 and the W2 is within a range of 20 g/m 2 or more and 120 g/m 2 or less, and characterized in that each of the W1 and the W2 satisfies relationships of following Expression and Expression , 30 ≤ W 1 − W 2 ≤ 100 W1/W2 2 × t1/t2 ≥ 1.5 where t1 (mm) is a sheet thickness of the first steel sheet and t2 (mm) is a sheet thickness of the second steel sheet in the Expression . <EOS>