Steel classified by its carbon content between 0.04% and 1.4% is known as?

Steel that contains a carbon content between 0.04% and 1.4% is classified as carbon steel. The specific carbon content range directly influences the properties of the steel, including its strength, ductility, and hardness. Carbon steel can generally be categorized into low, medium, and high carbon steel based on its carbon content, with low carbon steel typically having less than 0.3% carbon, medium carbon steel between 0.3% and 0.6%, and high carbon steel falling within the 0.6% to 1.4% range.

This differentiation is essential in welding and fabrication processes because the amount of carbon affects the steel's response to heat treatment, weldability, and corrosion resistance. In contrast, stainless steel contains chromium, which provides corrosion resistance, while alloy steel incorporates other elements to enhance specific properties beyond carbon content. Tool steel is a category designed for making tools, characterized by a higher amount of carbide-forming elements, which gives it superior hardness and wear resistance. Thus, identifying steel by its carbon content is fundamental in understanding its behavior during welding and its appropriate applications.