Eighteen fluxes for brazing and braze welding are classified according to the filler metal, form, and activity temperature range. Classification is in accordance with a classification system that employs the designator FB to indicate fluxes for brazing and braze welding applications. In addition to selected tests for each classification, major topics include general requirements, testing procedures, and packaging requirements. An annex listing general application guidelines is included. This specification makes use of both the International System of Units (SI) and U.S. Customary Units. The measurements may not be exact equivalents; therefore, each system shall be used independently.
Personnel Foreword List of Tables List of Figures 1. General Requirements 2. Normative References 3. Classification 4. Acceptance 5. Certification 6. Rounding-Off Procedure 7. Summary of Tests 8. Retests 9. Test Specimen 10. Flux Sample 11. Filler Metal 12. Water Content Test 13. Particle Test 14. Adhesion Test 15. Fluidity Test 16. Fluxing Action Test 17. Flow Test 18. Life Test 19. Viscosity Test 20. Method of Manufacture 21. Forms 22. Packaging 23. Marking of Packages Annex A (Informative) - Informative References Annex B (Informative) - Guide to AWS A5.31M/A5.31:2012, Specification for Fluxes for Brazing and Braze Welding Annex C (Informative) - Guidelines for the Preparation of Technical Inquiries AWS Filler Metal Specifications by Material and Welding Process AWS Filler Metal Specifications and Related Documents List of AWS Documents on Brazing and Soldering