This steel is composed of phosphorus, sulfur, silicon, and copper as major elements. It is having carbon and manganese in larger percentage as compared to other steel alloys. The plate made of this steel is having higher yield strength, higher tensile strength and have larger elongation property.

The S in the S275JR determines as the correspondence to structural steel. This alloy is having good machining properties and thus it provides finish work at the edges and at the surface.

The alloy is also very suitable for the welding purpose and they can also be welded at lower heat and at the lower temperature.