0 Anonymous Asked: May 3, 2021In: Technology How to weld cast iron? 0 How to weld cast iron? Share Facebook 1 Answer Voted Oldest Recent Rakesh 0 Questions 51 Answers 0 Best Answers 129 Points View Profile Rakesh Added an answer on May 3, 2021 at 4:25 pm Welding cast iron is difficult but not impossible to weld cast iron. Cast iron typically has a carbon content of about 2% to 4%, roughly 10 times more as compared to steel. When castings are made, the molten iron is poured into a mold, and then it is allowed to cool it slowly. When these cast iron are allowed to cool slowly by these crack free casting can be made. Cast iron is a family of iron-carbon family. Their high carbon content gives cast iron its characteristic hardness. Welding a cast iron involves repairs to casting, and not joining casting to other members. There is a variety of cast iron, the most common is grey cast iron. Cast iron electrode selection is an important part of cast welding. 0 Reply Share Share Share on Facebook Share on Twitter Share on LinkedIn Share on WhatsApp Leave an answerCancel replyYou must login or register to add a new answer.