Welding FAQs

Within the walls of The Lincoln Electric Company are some of the brightest minds in welding, but we wouldn't be The Welding Experts® if it weren't for the expertise of our customers. Learn with us from questions submitted by real customers and answered by the real experts.
 

Aluminum A Guide to Aluminum Welding Why do you get “crater cracks” in aluminum and how do you prevent them? When should I use 4043 and when should I use 5356? Stainless Steel When should I use 308L, 309L or 316L filler metal? Cast Iron When do I use Lincoln Softweld® 99 Ni, 55 Ni and Ferroweld® electrodes? Weld Tech I continue to get cracks in the face of my welds when I use Lincore 55. What am I doing wrong? It appears that a 5000 or 6000 watt 230 VAC generator is large enough to operate my AC/DC 225/125 using a 1/8 inch diameter E6010. Please confirm.