Gaseous NF3 containing 0.1% or less active fluorides (calculated as HF) was found to be noncorrosive toward several different parent and welded metal specimens.

• 含有0.；1%25或更少的活泼氟化物（认为是HF）的气态NF3被发现对于几种不同的母材和焊接金属试验品是没有腐蚀性的。