ISO 9454-2-2020 pdf download.Soft soldering fluxes一Classification and requirements – Part 2: Performance requirements.
This document specifies the performance requirements for fluxes in solid, liquid and paste forms intended for use with soft solders.
NOTE 1 Iso 9454-1 specifies the requirements for labelling and packaging as well as the coding system for the classification of the fluxes.
NOTE 2 Some of the fluxes intended for inert gas and vapour phase soldering may not pass some of the criteria in Tables 1 and 2.
Requirements for these fluxes are agreed between the purchaser and the supplier.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies
ISO 9455-3:2019, Soft soldering fluxes — Test methods — Part 3: Determination of acid value, potentiometric and visual titration methods
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.urgj
3.1flux
chemical substance in a form which assists molten solder to wet metal surfaces to be joined, by removing oxides and related contaminants from the solder and from the surfaces of the parts during soldering
Note ito entry: Flux can be in solid, liquid or paste form.
3.2liquid flux
solution of a flux in a suitable liquid solvent
3.3paste flux
solution or uniform dispersion of flux in a suitable viscous medium.ISO 9454-2 pdf download.