The objective was to compare plasma and TIG welding at macrolevel and micro level for both of the welding processes. In order to be able to do analyses for both of the welding processes based on their differences, similarities,disadvantages and advantages to be able to understand that which welding process is best suitable for what type of welding condition.The experimental specimens which were made of mild steel were put under both tensile and compression stress through bending.They were then analyzed on how they responded to the stresses.The emphasis was on the reaction on the joint area where the fusion of the weld was made.The results found can be applied on practice, because the experiment was conducted based on things that normally occur during the use of the welding processes.