ISO 5179:2021

Name: ISO 5179:2021 — Investigation of brazeability with spreading and gap-filling test
SKU: ISO 5179:2021
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Investigation of brazeability with spreading and gap-filling test

Название (английский):

ISO 5179:2021

Investigation of brazeability with spreading and gap-filling test

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 12
Дата публикации:: 8 марта 2021 г.
Издание:: ISO IS 5179 edition 2 version 1
ICS:: 25.160.50

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Описание (английский):

This document specifies three test methods for investigating brazeability. A spreading test shows testing method with measurement of the spread area of the filler metals. A T-joint test describes a scheme to construct a T-shape design by the test pieces and a testing method. A varying gap test describes a test piece and a testing method for assessing the influence of the various parameters which can influence brazing during manufacture as a function of clearances.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 5179:2021 - "Investigation of brazeability with spreading and gap-filling test" defines three standardized test methods to evaluate brazeability: a spreading test, a T‑joint test, and a varying gap (capillary) test. The standard describes test-piece designs, specimen preparation, brazing cycles, measurement and inspection procedures (visual imaging, radiography and micrographic examination), and reporting conventions to assess how filler metals wet and fill joints under controlled conditions. ISO 5179:2021 treats brazeability as the combined effect of wettability and fluidity (gap‑filling ability) rather than only surface wetting.

Key topics and requirements

Three test methods

Spreading test: measures spread area of filler metal on a rectangular plate (reported in mm²); repeatability is required (multiple runs).
T‑joint test: assembled perpendicular plates with a defined spacer to evaluate filler flow into a right-angle gap; measurements of penetration/flow path are recorded.
Varying gap test: concentric tubes with engineered, circumferentially varying gaps (0 to 0.5 mm) to map capillary filling as a function of clearance and angle.

Specimen geometry and preparation

Standard gives dimensional tolerances for test pieces and guidance on flux application and filler metal mass/volume.

Brazing cycle control

Requirements to record heating method, temperature measurement (thermocouples), heating rate, hold time, atmosphere and cooling rate.

Inspection and measurement

Spreading area by imaging sensors; T‑joint flow by calipers or similar; varying gap by radiography plus micrographic sectioning to measure filler rise, alloying and grain‑boundary penetration.

Data recording

Results collated on test data sheets; plotting filler rise vs. angle for varying gap tests.

Applications

Evaluate suitability of filler metals, fluxes, surface preparations and heating methods for manufacturing brazed assemblies.

Support material selection, process optimization and quality control in brazing operations.

Diagnose poor joint filling or inconsistent capillary action during process development.

Related standards

ISO 857-2 (vocabulary for soldering and brazing terms) - normative reference in ISO 5179

ISO 17672 (brazing filler-metal classification) - referenced for filler-metal types

Keywords: ISO 5179:2021, brazeability, spreading test, T‑joint test, varying gap test, brazing, filler metal, wettability, capillary gap, micrographic inspection, radiography.

ISO 5179:2021

Abstract

Похожие стандарты

Overview

Key topics and requirements

Applications

Who uses this standard

Related standards

Технические детали

ISO 857-2:2005

Welding and allied processes — Vocabulary — Part 2: Soldering and brazing processes and related terms

ISO 5179:1983

Investigation of brazeability using a varying gap test piece

BS EN ISO 17672:2024

Brazing. Filler metals.