KM-Z series are non-copper coated wires for GMAW. The characteristics of KM-Z series are equivalent to KM series, such as mechanical properties and chemical composition. KM-Z series possess the better features than KM series, as follows:
( 1 ) Arc stability
( 2 ) Low spatters
( 3 ) Good wire feedability
( 4 ) Arc re-start
( 5 ) Less fume emission