The importance of corrosion control
Are you interested in the importance of fighting corrosion from the supplier company AvecGlob? Here you will find the necessary information on this topic.
The importance of corrosion phenomena in modern metalworking
The damage that occurs in metals and alloys that enter into electrochemical and chemical reactions with their environment, consisting mainly of water and gas media, is called corrosion.
Most metals widely used in industry lose their stability in various environments, including atmosphere and land. All metals,
except for gold and platinum, are in an oxidized form by their nature. This is a complex process of separating metals from their oxides, and this requires the use of a large amount of raw materials, energy and labor. In terms of thermodynamics, at the end of this process, while metals are transferred to a higher energy level, their entropies decrease. The tendency of metals to return to their states in nature is the driving force of corrosion.
Corrosion is a slow but progressive phenomenon. Therefore, it takes a long time for its disastrous results. This phenomenon is the main reason for the underestimated corrosion in the design of metal structures. In fact, corrosion is the main factor in determining investment and production costs in the industry. According to some estimates, corrosion losses reach 3.5−5.0% of the gross national product. Today, as concerns about environmental pollution and safety are gradually increasing, the responsibility of scientists and engineers must be to develop and implement effective corrosion control methods.
Supplier — AvekGlob company — offers to buy a range of rolled metal products, made of different grades of stainless steels. Products can be bought at a price formed on the basis of European and world standards. Implementation is possible in bulk and retail, for regular customers, a flexible system of discounts operates.
The role of stainless steels in the fight against corrosion
Stainless steels provide:
• Resistance to corrosion
• Strength at elevated temperatures
• Strength and ductility at cryogenic temperatures
• Resistance to oxidation at high temperatures
• The aesthetic appearance of products
• Resistance to abrasion
Below is a brief overview of the stainless steel elements and their functions, contributing to increased corrosion resistance.
Chromium: forms a stable surface film of chromium oxide on steel for and improves resistance to scaling at extreme temperatures. With mechanical or chemical damage, this film is restored.
Nickel: strengthens the austenitic structure and provides ductility, thereby simplifying the processing of stainless steel. Nickel also increases resistance to high temperatures and corrosion resistance in industrial and marine environments, in the chemical, food and textile industries.
Silicon: increases the resistance to scaling, creating a dense initial scale, which is characterized by increased resistance to cyclic changes in temperature.
A small amount of silicon is added to all grades of stainless steel for deoxidation.
Manganese: promotes stability of austenite at room temperature and improves properties at elevated operating temperatures.
Molybdenum: Increases corrosion resistance, durability at high temperatures and increases the passivity range and reduces susceptibility to chlorides.
Aluminum: reduces hardenability and improves resistance to scaling.
Niobium: together with carbon reduces the susceptibility to intergranular corrosion and improves the formation of ferrite.
Copper: added to stainless steel to increase resistance to some aggressive environments. Copper also reduces susceptibility to stress corrosion.
Titanium: in combination with carbon reduces susceptibility to intergranular corrosion, and also promotes the formation of ferrite.
Supplier — AvekGlob Company — offers various types of rolled products from stainless steel of domestic and foreign production. The products are offered at affordable prices from the manufacturer. The supplier guarantees the timely delivery of products to any address specified by the consumer.