ISO 17672-2024 PDF

Full title and description

ISO 17672:2024 — Brazing — Filler metals. This International Standard specifies compositional ranges and classification for a series of brazing filler metals, and gives technical delivery conditions and approximate melting temperatures for those filler metals; it applies to filler metals used alone or as part of composite products (for example flux‑coated rods, pastes or plastic tapes) but covers only the filler‑metal portion of such products.

Abstract

This standard defines the compositional ranges of a set of brazing filler metals grouped into seven classes (classification is composition‑based rather than necessarily based on the major element). It provides approximate melting temperatures for information, technical delivery conditions for filler metals and products containing filler metals with other constituents (fluxes, binders), and notes that some specialist applications (precious‑metal jewellery, aerospace, dental) often use other filler metals covered in different standards.

General information

• Status: Published.
• Publication date: 23 April 2024 (ISO edition published April 2024).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 25.160.50 (Brazing and soldering).
• Edition / version: Edition 3 (ISO 17672:2024).
• Number of pages: 21 pages (ISO electronic publication).

Scope

ISO 17672:2024 specifies the compositional ranges of a series of filler metals intended for brazing and organises them into seven composition‑based classes. The standard covers only the filler‑metal component of composite brazing products (e.g., flux‑coated rods, pastes, tapes). Melting temperatures given are approximate (because they vary across compositional ranges) and are provided for information only. The document also provides technical delivery conditions for brazing filler metals and for products that contain filler metal together with fluxes or binders. It explicitly notes that certain specialist applications may rely on other filler metals covered by other standards.

Key topics and requirements

• Definition of seven classes of brazing filler metals based on compositional ranges rather than solely on a single major element.
• Specified compositional ranges for each class to ensure material consistency and interchangeability in supply and application.
• Provision of approximate melting‑temperature ranges for information (temperatures vary within compositional ranges).
• Technical delivery conditions for filler metals and for composite products containing filler metals plus fluxes or binders.
• Reference to Annex A for information on the major element(s) present in each class and a note directing specialist users (jewellery, aerospace, dental) to other applicable standards where appropriate.

Typical use and users

Primary users include brazing material manufacturers and suppliers, welding and brazing engineers, metallurgists, procurement and quality managers in fabrication and repair shops, test laboratories and standards committees. The standard is used to specify filler‑metal chemistry in procurement, to underpin material certification and to support interchangeability and quality control for brazed assemblies.

Related standards

Relevant related documents include earlier editions of the same standard (ISO 17672:2016 and ISO 17672:2010) and complementary ISO standards that cover brazing procedure specification and qualification (for example ISO 17779:2021 — Specification and qualification of brazing procedures for metallic materials). Regional/adopted versions (EN/BS/UNE adoptions of ISO 17672:2024) exist where the ISO text has been adopted as a national or regional standard.

Keywords

brazing; filler metals; brazing filler metals; compositional ranges; melting temperature; technical delivery conditions; flux‑coated rods; brazing classification; ISO 17672:2024.

FAQ

Q: What is this standard?

A: ISO 17672:2024 is the International Standard that specifies the compositional ranges and classification of brazing filler metals and gives related technical delivery conditions for those materials.

Q: What does it cover?

A: It covers the chemical composition ranges for a series of brazing filler metals grouped into seven classes, approximate melting temperatures (for information), and technical delivery conditions for filler metals and products that contain filler metals with other constituents (for example fluxes or binders). It applies to the filler‑metal portion of composite products such as flux‑coated rods, pastes and tapes.

Q: Who typically uses it?

A: Material suppliers and manufacturers of filler metals, brazing and welding engineers, metallurgists, quality and procurement personnel, test laboratories and standards bodies use this standard to specify, supply and verify brazing filler metals.

Q: Is it current or superseded?

A: ISO 17672:2024 is the current (published) edition (Edition 3, April 2024). It supersedes earlier editions, including ISO 17672:2016 and ISO 17672:2010.

Q: Is it part of a series?

A: It is part of the suite of ISO standards addressing brazing and allied processes developed by ISO technical committees responsible for welding and brazing (ISO/TC 44 and subcommittees). Complementary standards that address brazing procedure specification and qualification (for example ISO 17779) and regional adoptions (EN/BS/UNE versions) are commonly used alongside ISO 17672.

Q: What are the key keywords?

A: Key keywords are brazing, filler metals, brazing filler metals, compositional ranges, melting temperature, technical delivery conditions, flux‑coated rods, classification, ISO 17672:2024.