As a metal material constituting a medical instrument such as a stent, it is easy to be absorbed by a living body after being implanted into a living body, but its absorption rate is not too fast, and has mechanical properties such as a predetermined high strength, Provided are a bioabsorbable zinc alloy tube material excellent in workability in cold working or the like and a stent using the same. SOLUTION: Al is selected from the group consisting of 0.1-5% by mass, Mn 0.1-5% by mass, Mg 0.1-5% by mass, and rare earth 0.1-5% by mass. A zinc alloy containing at least one element, Fe less than 0.05% by mass, O less than 0.1% by mass, and the balance consisting of zinc and 0.1% by mass or less of inevitable impurities Tubing material and manufacturing method thereof, and stent for vasodilation using the same and manufacturing method thereof. [Selection figure] None【課題】ステントなどの医療器具を構成する金属材料として、生体内への埋入後に生体吸収がされやすく但しその吸収速度が速すぎず、かつ所定の高い強度などの機械的特性を有するとともに、冷間加工等での加工性に優れる生体吸収性亜鉛合金管材とそれを用いたステントを提供する。【解決手段】Ａｌを０．１～５質量％、Ｍｎを０．１～５質量％、Ｍｇを０．１～５質量％、及び希土類を０．１～５質量％からなる群から選ばれる少なくとも１つ以上の元素を含有し、Ｆｅを０．０５質量％未満、及びＯを０．１質量％未満とし、残部が亜鉛と０．１質量％以下の不可避不純物からなる組成を有する亜鉛合金管材とその製造方法、及びそれを用いてなる血管拡張用ステントとその製造方法。【選択図】なし
