Water is the most abundant nutrient in our body and plays an important transmission function in every body cell and tissue. Sixty percent of our body weight is water. The fact that you can live without food for a long period of time, even months, but live only for a few days without water is true.
The addition of zinc, a sacrificial anode, would prevent the iron metal from corroding. According to the table of Standard Reduction Potentials, the standard reduction potential of zinc is about -0.76 volts. The standard reduction potential of iron is about -0.44 volts.
Iron is the major component of steel, with carbon being a distant second, at between 0.2% and 2.14%, depending on the grade. Carbon is the most cost-effective way to alloy iron, but other metals can be used to augment the element and to give the metal certain properties. The metal known as cast iron is actually steel that has a very high carbon content, which gives it a lower melting point and greater castability.