This specification covers three classes of composition C-4, a military plastic explosive.
Composition C-4 shall be of the following classes (see 6.1):

    Class 1 - with a plasticity of 0.030 units,                 maximum     Class 2 - with a plasticity of 0.080 units,                 maximum     Class 3 - with a plasticity of 0.018 units,                 minimum

Intended Use: Class 1 is intended for use in military demolition explosive. Class 2 is intended for pressing into M5A1 block. Class 3 is intended for use as extrudable explosive.

This specification covers three classes of composition C-4, a military plastic explosive.
Composition C-4 shall be of the following classes (see 6.1):

    Class 1 - with a plasticity of 0.030 units,                 maximum     Class 2 - with a plasticity of 0.080 units,                 maximum     Class 3 - with a plasticity of 0.018 units,                 minimum

Intended Use: Class 1 is intended for use in military demolition explosive. Class 2 is intended for pressing into M5A1 block. Class 3 is intended for use as extrudable explosive.