Corrosion properties of tin
Resistance to moisture
Tin is stable in adverse atmospheric conditions. The rate of corrosion in a closed room amounts to 0.0004 g/(m2 • day), in the open air in the countryside is equal to 0,0007 g/(m2 • day), in the industrial areas of the city 0,0067 g/(m2 • day) and the marine air is up to 0,011 g/(m2 • day). In fresh and distilled soft water does not corrode tin. Water in hard water at a pH of 7.4−8.6 corrosion rate at room temperature is 0.001 and 0,0045 g/(m2 • day).
Resistance to acids
In hydrohalic mineral acid and tin corrodes quickly, especially at elevated temperatures and in the presence of oxygen. Cyanide-hydrogen and hydrofluoric acid on the tin are slow. This metal in organic acids: malic, citric, succinic, malonic and acetic at room temperature and a concentration of more than 0.75% corrodes at a rate of 0.05−0.1 g/(m2 • day). Aeration in the presence of oxygen increases the rate of destruction. In the oil and lactic acid concentrations greater than 1% corrosion rate of this metal at room temperature is negligible. Stearic, and oleic acid and particularly oxalic acid for tin are strongly at high temperature. Fruit juices (tomato, lemon, Apple, grape) — have minimal effect, the corrosion rate of the juice is at room temperature of 0.1−2.5 g/(m2 • day). But, at the boiling point of their aggressive action increases tenfold. Tin is used in the production of beer, but not recommended for use in winemaking.
Resistance in technical liquids
Kerosene, gasoline and lubricating oils have virtually no effect on the tin. This metal in ethanol corrodes at room temperature slightly (from 0,011 to 0,013 g/(m2 • day). But, but bromine, chlorine and iodine at room temperature, the tin corrodes badly, and at a temperature more than 100 °C begins to dissolve and fluorine. Also tin, is readily soluble in strong inorganic acids and alkalis. In dilute solutions of weak bases (ammonia, soda) tin dissolves poorly.
To buy, price
In stock, LLC «Electrocentury-steel» a wide range of products from nonferrous metals. Supply certified products of tin and its alloys, tin solders, fluxes, etc. We value our customers and are always ready to help you with your optimal choice. It offers experienced managers-consultants. Product quality is guaranteed by strict observance of the norms of production. The timing of orders is minimal. Wholesale buyers get a preferential discount.