Mild Steel Electrodes Description:E7018 is an excellent carbon steel electrode with iron powder low hydrogen potassium coating. It is used on both AC and DC in all position.As the coating contains iron powder, it has highly efficient welding and can reduce welding layers. Application:Used to weld low carbon structure and low alloy steel structure., such as 16 Mn etc. CHEMICAL COMPOSITION OF MELTING METAL% C Mn Si S P ≤0.12 ≤1.60 ≤0.75 ≤0.035 ≤0.040