Type 96 150-mm High-Explosive Mortar32-cm Spigot-Type Mortar
Japanese Explosive Ordnance – Army Ammunition – Navy Ammunition
Chapter 4 – Section 3
ARMY MORTARS
Type 97 - 150-mm High-Explosive Mortar
Weight complete round: 43.5 pounds.
Weight main charge: 8.98 pounds.
Explosive components:

Main charge: TNT.

Booster: RDX and wax.

Propellant:

Nitrocellulose and graphite: 58.0 percent.

Nitroglycerine: 7.1 percent.

Dinitrotoluene: 25.7 percent.

Diphenylamine: 0.5 percent.

Potassium nitrate: 8.7 percent.

Over-all length (without fuze): 23.7 inches.
Length fin assembly: 6.7 inches.
Maximum diameter at bourrelet: 5.9 inches (150 mm).
Maximum diameter tail fins: 5.87 inches.

Color: Black over all with a red nose tip and a yellow band before the bourrelet.

Fuzing: Type 100 instantaneous short-delay mortar fuze.
Weapon in which used: Type 97 150-mm smooth-bore mortar.

Description: Except for its shorter size, this projectile is similar in construction to the type 96 H.E. long round.

Figure 313 – Type 97 150-mm High-Explosive Mortar.

Type 96 150-mm High-Explosive Mortar32-cm Spigot-Type Mortar