Only 2 things really matter when we are talking about explosives of any type, VOD and Brisance.
VOD is the Velocity of Detonation. The VOD is quiet simply how fast the material burns or more specifically how fast the detonation/combustion travels thru the source material. If we accept that NT is capable of producing VODs of 8.8 m/s to 40.5 m/s (though i am not sure where we got those numbers but more on that later) then we are not even discussing an explosive at all. High Explosives used in controled demolition start at about 2,000 m/s.
Brisance is the "shattering effect" of an explosive and is rated by the detonation pressure of an explosive. High Det Pressure is correlative of high detonation velocity. And since we are talking about VERY low VOD we are talking about negligible Det Pressure.
If nanothermite produced by sol gel process is 40.5 m/s and nano particles without 8.8 m/s its highly likely therefore that thermite(normal) is much lower.Thermite as already shown if directed in a single direction can pulverise concrete vaporise metals.
You can Not demonstrate the thermal ability of any material against metal by considering its effects on concrete because when of spalling (the tendency of concrete to break and shatter under thermal load)
For NT to to have been used it must have a high enough VOD in high enough quantity to increase the target material to either the failure point (in case of a target material under load) or to the melting point (the point in which the material changes from a solid to a liquid). If you are mearly bringing the target material to the melting point then in order to cut the material you still have to have a Brisance or Pressure Source to move the material from position.
Now lets look at the
Actual VOD of NT:
Attached is the report on the propagation characteristics of Nano Thermite as we can see in the report the VOD (cited in the report as Velocity of Propagation ) is between 400 m/s and 1,000 m/s nd that report finds that the report finds that VOD decreases with density. The report also shows :
External Quote:
"if temperature is more important than propagation in a particular application, a stoichiometric ratio may be preferred"
which precludes the addition of any carrier agent such as paint which would alter that ratio.
even further the report states:
External Quote:
the peak propagation velocity occurred where there are more gas products and no solid Mo in the products
This gives great implication in devices employed in such a fashion as plasma cutters where gas mixtures are utilized independently of solid source materials but lowers the productivity of a source material required to use solids.
It is my opinion that while there is future practical application for NT the very basis thats makes it what it is , is also self limiting in any large scale clandestine use or in any large scale overt use as a practical method of Structural controlled demolition or even the rapid failure of large dense metals.
(edited to include the report cited with apologies )