well as all metals go, breakdown depends on the concentration of acid in the water, and how long it is exposed to extream heat and cool air. cooling and heating the metal will temper it, eithemaking it softer or stronger, but either way, allowing oxygen to corrad it. (oxygen is a liquid, and it is corrosive to metals) the best way i can tink of making a long lasting rocket stove is fire resistand bricks, and fire mortar. with ashas an isulator. will last 4ever. only problem is it is heavy hardto move
