Alloy steel is carbon steel alloyed with one or more metal or non-metal elements that tend to change its mechanical properties.
Different elements bring about various chemical, physical, and mechanical properties. These elements make the carbon steel harder, highly corrosion-resistant, stronger, easily formable, and weldable.
Tool Steel has several grades out of which the most commonly used are 4140, 4340, 6150, and 8620.
Metalsnet stocks 4140 alloy steel flat bars and round bars in different sizes.