UPERIOR FLUX NUMBER No. 601-Powder DESCRIPTION Silver brazing powder flux REC. BASE METALS Ferrous, stainless steels, copper and carbides REC. FILLER METALS BAg, BCuP REC. TEMP RANGES 450-850 C / 900-1600 F SPECS. AMS 3410; AWS A5.31-91, Type FB3F; O-F 499, Type B SDS Link