Improve hardness
Improve machinability
Improve brittleness
Improve weldability
More initial cost
Freedom from arc blow
More maintenance cost
Un suitable for non ferrous metal
Suitable for all ferrous and non-ferrous
Initial cost is lower
Maintenance cost in less
Not special safety precaution required
Motor generator set
Engine generator set
AC arc welding machine
AC welding transformer with a rectifier
Brass
Cast iron
Mild steel
High carbon steel