Alloy steel plage is made by combining carbon steel with one or several alloying elements.
Alloying elements are manganese, silicon, nickel, titanium, copper, chromium and aluminum.
Adding these metals produces specific properties not found in conventional carbon steels.
These elements are added in different ratios/combinations to give the material different effects, such as increasing hardness, increasing corrosion resistance, increasing strength, improving formability, and in addition, weldability changes.
The most important and desirable changes to alloy steel are:
*Enhanced hardenability.
*Enhanced corrosion resistance.
*Maintain hardness and strength.
*Almost all Alloy steel plates require heat treatment to achieve their optimum properties.
Alloying elements and their functions:
Chromium: Increases hardness, increases toughness and wear resistance.
Cobalt: Used in the manufacture of cutting tools; improves hot hardness.
Manganese: Improves surface hardness, improves resistance to strain, hammering and impact.
Molybdenum: Increases strength, improves impact and heat resistance.
Nickel: Improves strength, toughness, and corrosion resistance.
Tungsten: Increases hardness and improves grain structure, providing improved heat resistance.
Vanadium: Increases strength, toughness and impact resistance, improves corrosion resistance.
Chrome Vanadium: Greatly improved tensile strength, it is strong, but easy to bend and cut.
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