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