PD ISO/TR 24471 specifies a grouping system for American parent materials for brazing.
PD ISO/TR 24471 mirrors the similar materials grouping system given in ISO/TR 20173 for welding of US materials.
A brazing alloy has suitable melting and flows properties to permit distribution by capillary attraction in properly prepared joints. PD ISO/TR 24471 provides the general classification for American parent materials for brazing procedures that can be utilized throughout the country.
PD ISO/TR 24471 on brazing is relevant to:
When brazing, welding or soldering procedures or performances are qualified, test pieces are prepared using a specific combination of parent material and consumables. The main objective of grouping parent materials is to minimize the number of brazer and brazing procedure qualification tests to be qualified for production applications.
Complying with the grouping system under PD ISO/TR 24471 can help you determine the parent material that can cover a range of other materials that offer similar brazeability, thus improving functionality, cost-effectiveness and efficiency of the end-application.
ISO/TR 24471