In stainless steel many of variable factors said of corrosive medium characteristics, namely, chemicals and its concentration, air condition, temperature, time, so if you don't learn the right properties of medium, want to use material, choice of material is difficult.
The following for selecting stainless steel type selection guidelines:
304 type extensive use of materials. In building can undergo general rustily, can resist food processing medium erosion (but contain concentrated acid and chloride composition of high temperature condition may appear corrosion), can resist organic compounds, dyestuff and a wide variety of inorganic compounds. 304L type (low carbon), resistance to nitric acid sex good, and durable medium temperature and concentration of sulfuric acid, the widely used as a liquid gas tank, used for low temperature equipment (304N), appliances other consumer products, kitchen equipment, hospital equipment, means of transport, wastewater treatment plant.
316 type containing a little more than 304 type of nickel, and contains 2% ─ 3% of molybdenum, corrosion resistance than 304 type of good, especially in tend to cause pitting erosion of chloride medium. 316 type has developed as sulphite pulp machine, because it is durable sulphate. Moreover, its use has spread to the processing industry deal with a lot of chemical products.
317-4% of the containing type 3% molybdenum (in this series is also obtained high level), and contains more than 316 type of chromium, with higher corrosion and corrosion resistant materrial crack performance.
430 type than 304 type alloy content is low, used in the warm atmosphere high polished adornment utility, but also can be used as nitric acid and food processing equipment.
410 type in three generalization USES stainless steel with a minimum of alloy content, need strength and corrosion resistance of GaoCheng force component selection with, such as strong pieces. 410 type in the warm atmosphere, hydrosphere and many ease of chemical products medium corrosion resistant.
Than 304 type and 316 type is superior to him, because he chloride stress corrosion crack with high resistance, and has about twice as intensity.
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