When choosing stainless steel in a corrosive environment, in addition to the specific use of stainless steel spring should have a detailed understanding, but also need to consider the main factors are: stainless steel corrosion resistance, strength, toughness and physical properties, processing, forming properties, resources, price and easy to obtain. Corrosion resistance of stainless steel includes corrosion resistance to acid, alkali, salt and other corrosive media as well as resistance to oxidation, vulcanization, chlorination, fluorination and other properties at high temperatures.

When corrosion resistance is involved in material selection, the following points should be noted:
1, the standard of corrosion resistance is determined artificially, both to admit it, use it, and can not be constrained by it, according to the specific use requirements to determine whether the specific standard of corrosion resistance.
2, corrosion resistance is relative, conditional, often said stainless steel rust, corrosion resistance refers to relative to rust and corrosion resistance, is refers to in certain conditions (medium, concentration, temperature, impurities, pressure, flow rate, etc.). So far has not been in any corrosive environment are not rust resistance, corrosion resistance of stainless steel, so the option of material personnel must according to the specific conditions of use to choose, stainless steel grades is selected, use the department have to choose the correct use of the characteristics of the stainless steel is reasonable material selection and correct use of to achieve has the objective of does not rust or corrosion.