Adjective
Capable of being welded.
Source: Webster's dictionaryStainless steel is used today in building construction because of its durability and because it is a weldable building metal that can be made into aesthetically pleasing shapes. Source: Internet
GTAW can be used on nearly all weldable metals, though it is most often applied to stainless steel and light metals. Source: Internet
Many different methods have been devised for heating plastic to a weldable temperature without burning it. Source: Internet