Third, methanol can dissolve certain plastics and embrittle a some metals.    From Wordnik.com.  [Patrick Takahashi: Ethanol Vs. Methanol] Reference

Yet this lightest of the chemical elements can embrittle the metals used in vehicle engineering.    From Wordnik.com.  [PhysOrg.com - latest science and technology news stories] Reference

Because hydrogen can penetrate and embrittle some metals and alloys, developing standards for using existing pipelines, storage tanks, pumps and delivery systems is an essential first step before the elemental gas can be considered as a viable fuel for widespread use.    From Wordnik.com.  [PhysOrg.com - latest science and technology news stories] Reference