Norm

ISO/DIS 8249:2017 en

Lassen - Bepaling van het ferrietgetal in austenitisch en duplex ferritisch-austenitisch corrosievast Cr-Ni-staal

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Over deze norm

Status Ontwerp
Aantal pagina's 32
Commissie Lassen en verwante processen
Gepubliceerd op 01-05-2017
Taal Engels
This document specifies the method and apparatus for: - the measurement of the delta ferrite content, expressed as Ferrite Number (FN), in largely austenitic and duplex ferritic-austenitic stainless steel1) weld metal through the attractive force between a weld metal sample and a standard permanent magnet; - the preparation and measurement of standard pads for manual metal arc covered electrodes. The general method is also recommended for the ferrite measurement of production welds and for weld metal from other processes, such as gas tungsten arc welding, gas shielded metal arc welding and submerged arc welding (in these cases, the way of producing the pad should be defined); - the calibration of other instruments to measure FN. The method laid down in this document is intended for use on weld metals in the as-welded state and on weld metals after thermal treatments causing complete or partial transformation of ferrite to any non-magnetic phase. Austenitizing thermal treatments which alter the size and shape of the ferrite will change the magnetic response of the ferrite. The method is not intended for measurement of the ferrite content of cast, forged or wrought austenitic or duplex ferritic-austenitic steel samples.

Details

ICS-code 25.160.40
Nederlandse titel Lassen - Bepaling van het ferrietgetal in austenitisch en duplex ferritisch-austenitisch corrosievast Cr-Ni-staal
Engelse titel Welding - Determination of Ferrite Number (FN) in austenitic and duplex ferritic-austenitic Cr-Ni stainless steel weld metals
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