Question: is anhydrous ammonia corrosive to steel?
Answer: Ammonia–at high temperature has high potential for nitriding metals. ... Condensed ammonia is a corrodent, and in anhydrous state it can cause stress-corrosion cracking of stressed carbon steels or high-strength, low-alloy steels. Hydrogen–in itself not corrosive but can lead to blistering and embrit- tlement of steel.