S275JR Hot rolled Plate/Coil

Low Alloy Steel Plate – Steel is considered to be low-alloy steel when either of the two conditions is met. In the first condition, the maximum of the range given for the content of alloying elements exceeds one or more of the following limits, Mn – 1.65 %, Si – 0.60 %, and Cu – 0.60 %.  As per the second condition, any definite range or specific minimum quantity of any of the following elements is specified or required within the limits of the recognized field of constructional alloy steels namely Al, B, Cr upto 3.99 %, Nb, Mo, Ni, Ti, V, Zr, Co (cobalt), W (tungsten), or any other alloying element added to obtain the desired alloying effect.

Alloying elements are added to hot-finished plates for several reasons, including improved corrosion resistance and/or improved mechanical properties at low or elevated temperatures. Alloying elements are also used to improve the hardenability of quenched and tempered plate.

Alloy Steel Plate normally need additional care throughout their production process. They are more sensitive to thermal and mechanical operations, the control of which is complicated by the varying effects of different chemical compositions. For getting the most satisfactory results, the steel user normally consult with steel producers regarding the working, machining, heat treating, or other operations to be employed in fabricating the steel, mechanical operations to be employed in the fabricating the steel, mechanical properties to be achieved, and the conditions of service for which the finished articles are intended.

The chemical composition requirements of low Alloy Steel Sheet are as per various standards. The low alloy steels can be suitable for some structural applications. The residual alloying elements can have effect on the mechanical properties of hot-finished steel plate. The alloying elements also have their effects on the hardenability and mechanical properties of quenched and tempered steels.