Yes. It has been estimated that 8% of the earth’s crust is composed of aluminum, usually found in the oxide form known as bauxite. Aluminum can be selectively leached from rock and soil to enter any water source. What are the health effects of aluminum in water? In some organs, specifically the spleen, kidneys and lung, concentrations up to 100 ppm (dry mass) may be present. The aluminum metal atoms that lose electrons become ions and are free to bind with the oxygen in the water to form aluminum oxide. The salt does not directly attack the aluminum, but causes an electrochemical attack like a catalyst that results in the corrosion. According to a test conducted by the International Molybdenum Association, chlorinated water at a concentration of 2 parts per million (ppm) or less causes significantly less corrosion on aluminum than on other metals commonly used in swimming pool construction such as cast iron, stainless steel alloys and carbon steel. Aluminum is the second most plentiful metallic element on earth. Let’s take a look at what causes marine corrosion and whether 304 stainless steel is a good choice for marine applications. The Effects of Salt Water… There is a misconception about stainless steel in that it doesn’t rust or corrode when exposed to water, specifically sea water. Salt water causes the corrosion of aluminum creating aluminum oxide. Even modern alloys will vary in response to this environmental exposure, ranging from mere surface discoloration all the way to mechanical failure. Anyone considering purchasing an aluminum tracker or using one in salt water needs to take note of the following experience: I have used my boat in salt water 6 times and have cleaned it thoroughly after each use. Daily aluminum intake is approximately 5 mg, of which only a small fraction is absorbed. Here's an update from my message board post on 5/30/02 regarding the corrosion on my 2000 TV-18 Tracker. The total aluminum concentration in the human body is approximately 9 ppm (dry mass). The other major uses of these two salts are in industrial water and wastewater treatment and in the pulp and paper industry. When aluminum is wetted with the saltwater and water enters the crevice, little happens initially. The crevice can result from the overlap of two parts, or gap between a bolt and a structure. Acid rain, salt water and other contaminants can still exploit weaknesses in the surface passivation. When you combine so many elements that are harmful to steel, including water, salt, and other minerals, it takes a special type of stainless steel to live up to its name. Al3+ is known to exist in groundwater in concentrations ranging from 0.1 ppm to 8.0 ppm. The Power of Aluminum. Crevice corrosion requires the presence of a crevice, a salt water environment, oxygen (Fig. Aluminum has become the … Aluminum sulphate (or "alum") and aluminum chloride are primarily used in municipal drinking water and wastewater treatment facilities to help remove suspended particles and bacteria from the water. But aluminum must withstand more than just pure air and water. Some of the aluminum oxide molecules drift away while the other settles onto the aluminum surface. 1). Cooking with aluminum isn't generally a health risk. However, you probably shouldn't cook acidic foods in aluminum pans, especially if you have kidney disease. Stainless steel can in fact rust and corrode if continuously exposed over time. Electrons flow from the more chemically active aluminum lower unit via the saltwater to the stainless-steel propeller. 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