E6013 refers to a popular type of mild steel welding electrode (or welding rod) known for its versatility, smooth arc, and ease of use, making it great for beginners and general repairs on thin to medium steel in all positions (flat, horizontal, vertical, overhead) using AC or DC power. Key features include a rutile-based coating, stable arc, low spatter, and easy slag removal, ideal for general fabrication, auto body, and structural work.