What is the density of steel per meter square?

Density is typically expressed in terms of mass per unit volume, not per square meter. For steel, the density is approximately 7,850 kg/m³. To find the mass of steel per square meter at a specific thickness, you would multiply the density by that thickness in meters. For example, if you have a thickness of 1 meter, the mass would be approximately 7,850 kg/m².