The purpose of the present invention is to provide a roll-joined body which provides excellent press workability and/or a roll-joined body which exhibits improved performance and handling during manufacturing. The present invention pertains to: a roll-joined body comprising an aluminum alloy layer and a stainless-steel layer and having a peel strength of at least 60 N/20 mm; a roll-joined body comprising a pure aluminum layer and a stainless-steel layer and having a peel strength of at least 160 N/20 mm; and a roll-joined body comprising an aluminum alloy layer and a pure titanium or titaniumalloy layer and having a peel strength of at least 40 N/20 mm.