Hot-Rolled Steel are suitable for any commercial use. Versatility, flexibility, and durability help make hot- rolled steel a popular choice for a wide range of applications. Its high strength, toughness and cost-effectiveness are useful for various industries.
Used in fabricating and welding, hot rolled steel is the ideal choice in the construction and building industry. Since the surface finish is not an issue; it’s more commonly used in situations, where precise tolerances and shapes are not required.
A Hot rolled sheet and coil are two of the most crucial materials in the automotive industry. Products built from this material are durable, available, and cost-effective in a plethora of strength levels. Automakers source materials from hot rolled steel suppliers for making suspensions, fuel tanks, wheels, steering systems, and braking systems.
Hot rolled steel is used to manufacture farming equipment like plows, cultivators and harrows.
Production of both cold-rolled and hot-rolled steel begins with the same steps. Initially, they both are processed at very high temperatures. However, after the treated steel is ready, the cold-rolled steel passes through a few extra steps. Hot Rolling refers to the use of heat but Cold Rolling indicates a process done at or near room temperature. Although both these techniques affect overall application and performance they are completely different from the formal grades and specifications of steel.
To make Hot Rolled Steel, the molten steel is roll-pressed at extremely high temperatures of over 1700˚F. Such high temperatures are mandatory as the recrystallization happens between 750 degrees to 1300 degrees Fahrenheit. This allows easier reshaping and forming of the hot roll steel sheets and coils. After the steel is rolled into the desired shape through the mill, it’s allowed to cool down.
This is exactly where the processing of Cold Rolled Steel begins. The term “cold rolled”, applies to the steels that undergo compression. While hot rolled steel production involves heating at severe high temperatures followed by cooling, the manufacturer cools down the steel and then re-rolls it at normal room temperature either by press-braking or cold roll forming. This process allows the steel to get the desired dimensions and shape. The most visible difference between the two is the former has a scaled surface but the latter has a smooth surface and oily-like touch.
Hot Rolled steel in CQ, A36, and G50 is the most sought-after hot rolled steel grades available since it is weldable and characterized by exceptional mechanical properties.
Yes, hot-rolled steel can rust. Hot rolled steel is not a rust-resistent material and can corrode over time when exposed to moisture and oxygen over time.
Yes, one of the biggest hot rolled steel advantages is its ductility, which makes it tough and easy to produce quickly. It’s a cost-effective option with low carbon that can be formed into many shapes and sizes.
Hot rolled steel is prone to corrosion and rust. The easiest strategy to avoid rust is to keep the steel clean and limit its contact with water. Top layer of paper wrap can help as well as storing the steel in a indoor temperature controlled location.
Steels are given grades as per the standards set by governing bodies – The American Society for Testing and Materials (ASTM) most commonly used types of hot rolled steel grades are A-36, 1010, 1018, A-1011.