SCS is "Smooth Clean Surface" - a special low carbion sheet steel that is made from basic hot rolled black. In the SCS process, rust and mill sclae is brushed away, leaving the surface extremely clean and very resistant to rust. No protective oil or coating is needed to keep the SCS steel from rusting when stored indoors.SCS sheet steel has many advantages for fabricators. It laser and plasma cuts faster than HRPO or hot rolled black. It produces more uniform, stronger welds. It provides a better paint finish, but uses a leaner pre-treatment than HRPO.The savings from using SCS are impressive and it is available in either sheet or coil form from any one of the licensed SCS Producers. You can reach them and learn more details at www.scsprocess.com