R. Meyer J. Köhler A. Homburg Explosives

187 Impact Sensitivity
Table 18. Impact sensitivities given as the product of fall weight and fall height
(kp m). In the following Table the kp m values are listed at which at least one of
six tested samples explodes.
Explosive Fall
Fall Fall
Weight
Height Energy
kp N m kp m N m
A. Homogeneous explosives
nitroglycol 0.1 1 0.2 0.02 0.2
nitroglycerine 0.1 1 0.2 002 0.2
Tetrazene 1 10 0.2 0.2 2
mercury fulminate 1 10 0.2 0.2 2
PETN 1 10 0.3 0.3 3
Tetryl 1 10 0.3 0.3 3
nitrocellulose 13.4 % N 1 10 0.3 0.33
nitrocellulose 12.2 % N 1 10 0.4 0.44
lead azide 5 50 0.15 0.75 7.5
Hexogen 5 50 0.15 0.75 7.5
picric acid 5 50 0.15 0.75 7.5
TNT 5 50 0.30 1.5 15
lead styphnate 5 50 0.30 1.5 15
ammonium perchlorate 5 50 0.50 2.525
dinitrobenzene 10 100 0.50 5 50
B. Industrial explosives
Guhr dynamite 1 10 0.10 0.1 1
Gelignite 1 10 0.10 0.1 1
seismic gelatins 1 10 0.10 0.1 1
blasting gelatin 1 10 0.20 0.2 2
ammonium nitrate
nitroglycol gelatin 1 10 0.20 0.2 2
gelatinous permitted
explosives 1 10 0.30 0.3 3
nitroglycerine
sensitized powders
and permitted
explosives 5 50 0.20 1.0 10
powder-form explosives
without
nitroglycerine 5 50 0.40 2.0 20
For explosives of high critical diameter, Eld, D. and Johansson, C. H.
described an impact testing method*) by shooting the explosive sample
(unconfined; filled in bakelite tubes 30 mm P; 30 mm length and
covered with paper or plastic foil) with brass cylinders (15 mm P;
* Eld, D. and Johansson, C. H.: Shooting test with plane surface for determining
the sensitivity of explosives EXPLOSIVSTOFFE 11, 97 (1963) and Johansson-
Persson, Detonics of High Explosives, Academic Press, London and New York
(1970), p. 108 ff.