Which process is used to make the steel soft?

Construction steel, also called structural steel, is a low-alloy steel used in the construction of buildings, ships, bridges, cranes, excavators, and agricultural machinery. It has a high strength-to-weight ratio and is strong enough to support the weight of a building.  Here are some types of construction steel: Carbon steel: A combination of iron and carbon, it is strong, durable, and relatively lightweight. It is also easy to work with and can be formed into a variety of shapes. Mild steel: Also known as MS, it is strong, long-lasting, and helps in making a solid foundation for any type... Show more

Construction steel, also called structural steel, is a low-alloy steel used in the construction of buildings, ships, bridges, cranes, excavators, and agricultural machinery. It has a high strength-to-weight ratio and is strong enough to support the weight of a building. 

Here are some types of construction steel:
Carbon steel: A combination of iron and carbon, it is strong, durable, and relatively lightweight. It is also easy to work with and can be formed into a variety of shapes.
Mild steel: Also known as MS, it is strong, long-lasting, and helps in making a solid foundation for any type of structure.
Alloy steel: A combination of carbon steel and other alloying elements, such as chromium, manganese, nickel, or vanadium. This improves its properties such as strength, hardness, and resistance to corrosion.
Rebar steel: Also known as reinforcing steel or reinforcement steel, it provides additional strength and support to concrete structures such as buildings, bridges, and roads.
Stainless steel: A combination of steel and chromium, it does not rust and will last for decades without requiring much maintenance. Stainless steel is often used to make appliances, staircases, frames for construction, and more.
Tool steel: A carbon alloy steel that's good for making tools. 

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