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ISO 18496:2020

Brazing — Fluxes for brazing — Classification and technical delivery conditions

Publication date:   Sep 3, 2020

General information

90.93   Standard confirmed   Dec 11, 2025

ISO

ISO/TC 44/SC 13 Brazing materials and processes

International Standard

25.160.50   Brazing and soldering

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Scope

This document specifies the classification of fluxes used for brazing metals and characterizes these fluxes on the basis of their properties and use, and gives technical delivery conditions and health and safety precautions.
This document covers two classes of flux, FH and FL. Class FH is used for the brazing of heavy metals (steels, stainless steels, copper and its alloys, nickel and its alloys, precious metals, molybdenum and tungsten). Class FL is used for the brazing of aluminium and its alloys.

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PUBLISHED
ISO 18496:2020
90.93 Standard confirmed
Dec 11, 2025