Differences of Cold-Rolled Steel and Hot-Rolled Steel


In the manufacture of the vast majority of metal products, including sheet steel, hot and cold production technologies are used. Here, we will give answers to the question of how cold-rolled steel differs from hot-rolled steel. These answers will relate to their characteristics, advantages and disadvantages, scope, and other aspects.

Advantages of Hot Rolled Steel

You can talk about the advantages of a material when it has an alternative in the form of other products. By and large, cold-rolled steel and hot-rolled steel do not compete. Rather, their range is complementary. But the advantages of the hot-rolled sheet steel include:

· The widest range of products in thickness and sheet size;

· relatively low cost of rental;

· The possibility of applying a variety of methods of anti-corrosion treatment of products from it;

· The universality of the material, providing it with a wide scope of application;

· Durability.

Disadvantages of Hot-Rolled Steel

The disadvantages of hot-rolled steel include the absence in the general assortment of sheet products with a thickness of less than 0.4 mm. It is inferior in terms of corrosion resistance, as well as the strength of welds to cold-rolled steel. It shouldn’t be used in the manufacture of products with high demands on the quality of surfaces.

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Advantages of Cold-Rolled Steel

Cold-rolled sheet metal is a higher-grade product compared to hot-rolled analogs. Its main advantages are:

· High manufacturing accuracy, which reduces waste material loss;

· increased strength and corrosion resistance;

· Excellent weldability, allowing the use of all welding methods with high quality-welds;

· The availability of any anti-corrosion treatment methods, including galvanizing;

· Plasticity, which makes the cold-rolled sheet steel a perfect material for the manufacture of stamped and finished things.

Disadvantages of Cold-Rolled Steel

The main disadvantage of cold-rolled steel is the thickness of the sheets limited to five millimeters. Besides, it is significantly more expensive than a similar assortment of hot-rolled steel. However, these discussions about the advantages and disadvantages of the two types of materials don’t provide a clear answer to the question of what is better than hot-rolled or cold-rolled steels. In fact, both categories of metal are equally good for their fields of application.

Where Cold-Rolled and Hot-Rolled Steel Are Used

The advantages of any product are fully manifested only when it is used for its intended purpose. Among the main areas of application of hot-rolled steel are:

· Constructions where all types of hot-rolled steel are the main structural material (including those with high bearing capacity);

· Manufacturing of various industrial products: freight cars, dump truck bodies, etc.;

· Hot-rolled steel is also used in the production of chromoly welded pipes, bent sections, and other products.

How Cold-Rolled Steel Differs Hot-Rolled Steel

There are visual differences that can be easily determined without any kind of research. Hot-rolled steel looks presentable and sometimes has a stain from temperature loads. This can’t be said about cold-rolled steel. It is lighter and has very even angles and minimal errors in its thickness.

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What Is Better: Hot Rolled or Cold Rolled Steel

It makes no sense to answer this question. Just use the metal for its intended purpose. With proper anti-corrosion treatment, hot-rolled and cold-rolled steel will last you equally long.