What Is Hot Rolled Steel?

Hot rolled steel is rolled under high temperature, its strength is not very high, but enough to meet our use, its plasticity, and weldability is good, hot rolled steel market price is kept at a low level. When steel is cooled at room temperature, it changes the microstructure of the material, thus increasing its ductility and toughness. Wanzhi Steel produces and supplies hot rolled coils and hot rolled sheets, welcome to contact us for further details!

Item	Hot- rolled Coils	Hot-rolled Sheets
Thickness	1.0-4mm	1.5-250mm
Width	600-1500mm	600-2000mm
Length	Coils inside diameter (ID): Φ508—760	2000-6000mm

How to Calculate the Weight of Hot Rolled Sheets？

Calculation formula of carbon sheets weight: thickness(mm)*length(m)*width(m)*7.85=kg/pcs
Calculation formula od stainless steel sheets weight: thickness(mm)*length(m)*width(m)*7.93=kg/pcs

Advantages of Hot Rolled Steel

1. Hot rolling can significantly reduce energy consumption and cost. In hot rolling, the metal has high plasticity and low deformation resistance, which greatly reduces the energy consumption of metal deformation.
2. Hot rolling can improve the processing properties of metals and alloys, that is, the coarse grains in the casting state are broken, the significant cracks are healed, the casting defects are reduced or eliminated, the as-cast microstructure is transformed into the deformed microstructure, and the machining properties of alloys are improved.
3. Hot rolling usually adopts large ingot and large reduction rolling, which not only improves production efficiency but also creates conditions for improving the rolling speed and realizing the continuity and automation of the rolling process.

What is Hot Rolled Steel Used For?

1. Structural steel: mainly used in the production of steel structural parts, Bridges, ships, and vehicles.
2. Weatherproof steel: with good corrosion resistance and atmospheric corrosion resistance, it is used for the production of containers, special vehicles, and also for building structures.
3. Steel for automobile structure: high-strength steel plate with good stamping performance and welding performance, used for automobile FRAME, WHEEL, and other production.
4. Hot rolled special steel: carbon steel, alloy steel, tool steel for general mechanical structure, after heat treatment engineering for various mechanical parts production.
5. Steel sheets for high-pressure vessels: with good processing performance and compressive strength, it is used for the production of high-pressure gas pressure vessels filled with LPG, acetylene gas, and various gases below 500L.
6. Stainless steel sheets: stainless steel has good corrosion resistance, mainly used in the food industry, surgical equipment, aerospace, petroleum, chemical, and other industries.

Hot Rolled Steel vs Cold Rolled Steel

Each metal has its own advantages and uses, and grades of materials with the same chemical composition may have different qualities depending on the manufacturing method, for example, some types of steel are ideal for use in household appliances. In contrast, others are suitable for use in the automotive or Marine industry, gas tanks, construction, etc. Hot-rolled steel and cold-rolled steel also have some differences in some aspects, the details are as follows:

1. They are different in essence:

a. the essence of cold rolled steel: cold rolled steel is the steel produced by cold rolling. Cold rolling is the further thinning of steel plate to the desired thickness at room temperature.
b. the essence of hot rolled steel: hot rolled steel is a kind of steel rolled above the recrystallization temperature.

2, the characteristics of the two are different:

a. Characteristics of cold-rolled steel: cold rolled steel plate thickness is more accurate, and the surface is smooth and beautiful but also has a variety of superior mechanical properties, especially processing properties.
b. The characteristics of hot rolled steel: hot rolling metal plasticity is high, low deformation resistance, greatly reducing the energy consumption of metal deformation. Hot rolling can improve the machining properties of metals and alloys, that is, the coarse grains in the casting state are broken, the cracks are healed significantly, the casting defects are reduced or eliminated, the as-cast microstructure is transformed into the deformed microstructure, and the machining properties of alloys are improved.

3, the processing requirements of the two are different:

a. Processing requirements of cold rolled steel: cold rolled steel requires large mill power, low rolling efficiency, and in order to eliminate work hardening in the rolling process but also intermediate annealing, so the cost is high.
b. the processing requirements of hot rolled steel: hot rolled steel is easy to roll, rolling efficiency is high, hot rolling temperature including opening rolling temperature and final rolling temperature, the opening rolling temperature is mainly determined according to the alloy phase diagram of solid phase line temperature about 80%, and the final rolling temperature to determine according to the plastic diagram of alloy to determine, the general requirements of control in alloy recrystallization temperature above.

Item	Cold-rolled Coils	Cold-rolled Sheets
Thickness	0.5mm-3mm	0.2-3mm
Width	600-1250mm	600-2000mm
Length	1200-6000mm	2000-6000mm

Difference Between Cold Rolled Steel and Galvanized Steel

How to Calculate the Weight of Cold Rolled Sheets？

Calculation formula of cold rolled sheets weight: thickness(mm)*length(m)*width(m)*7.85=kg/pcs

Finally Words

Through the introduction of the above content, I believe you have a particular understanding of hot-rolled steel, if you have any questions, please feel free to contact us. Wanzhi Steel is also a production and sales manufacturer of hot rolled coils. Many customers buy our hot rolled coils for secondary processing and sales. Welcome to contact us for the latest price！