 the deformation is greater than 26 mm, with the lead cylinder being completely destroyed.Semtex 1A gives only 21 mm in the same test, i.e melt-cast ETN is at least 20% more brisant than Semtex 1A.Melt-cast ETN or high density/low inert content ETN plastic explosives are one of the materials on "watch-lists" for terrorism.