ISO 3690:2011 specifies the sampling and analytical procedure for the determination of diffusible hydrogen in martensitic, bainitic, and ferritic steel weld metal arising from the welding of such steels using arc welding processes with filler metal.The te
DS/EN ISO 3690:2012 history
2012DS/EN ISO 3690:2012 Welding and allied processes - Determination of hydrogen content in arc weld metal