AS 2205.7.2-2003 pdf free.Methods for destructive testing of welds in metal - Method7.2:Dropweight fracture toughness test for nil-ductility transition temperature. This Standard sets out a method for dropweight testing of a welded joint to determine the nil-ductility transition temperature of a selected area of metal in the weld zone. NOTE: For the purposes of this Standard, welding consumables are taken...