Specifies requirements for ferrous and non-ferrous, fluxed and non-fluxed filler metal for welding. The classification system adopted is basically in line with ANSI/AWS classification. One hundred and thirteen types of filler metals are given in seven groups - carbon and intermediate alloy steels, high alloy steels, cast iron, copper and copper alloys, magnesium alloys, aluminium alloys, and nickel and nickel alloys. An appendix giving guides to the classification system, and the use of filler metals is included.