ISO/TR 20491-2019 紧固件--钢紧固件中氢脆的基本原理 Fasteners — Fundamentals of hydrogen embrittlement in steel fasteners

This document presents the latest knowledge related to hydrogen embrittlement, translated into know- how in a manner that is complete yet simple, and directly applicable to steel fasteners.st edition 2019-02 Fasteners — Fundamentals of hydrogen embrittlement in steel fasteners Fixations — Principes de la fragilisation par l'hydrogène pour les fixations en acier Reference number ISO/TR 20491:2019(E) ？ ISO 2019 ISO/TR 20491:2019(E) COPYRIGHT PROTECTED DOCUMENT ？ ISO 2019 All rights reserved. Unless otherwise specified, or required in the