Over a Greek survival forum we had 3 cases of firesteel degradation in survival kits.
in 2 cases there was erosion on the rod and a fine grey dust all around.
The other case was scary.
flint dissapeared completely!
All the kits were sealed and left stored. There were no indications of moisture (I am adamant in my case) but all kits had Bic lighters in them, that they were not jammed in anyway to avoid gas leakage.
What is going on?