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Brand 4 CH

SC1800

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Have anyone a photo of Brand 4 CH (B-4 CH) german ww2 bomb? Was this bombs widely used, or it was only an experimental weapon? What type of container was used for this bombs?
 
The AB 250 cluster could contain 28 B4 and the AB 500 cluster could contain 46 B4. I have not seen mention of other clusters ability of taking these bombs.

Four different versions were developped of the incendiary bomb B 4. They were outwardly identical (punched steel sheet body with cast iron head and tail unit), only with different fillings. The 4 variants were thrown together during a bombing, the different behaviour of each variant being intended to make fire-fighting operations more difficult. The four models were:

B4 CH - a slowly burning down combiantion of Thermit and Naphthalin, burning for approx. 4 to 5 minutes burns, with the burning Naphthalin running around and increasing the surface on fire. The bomb could be put off only by pouring large quantities sand and water upon the fire.
B 4 CHL with a filling made from pitch, Potassium Chlorate and Nitrate of Ammonia. It burned sending flashes of flames from the holes of the incendiary bomb out. This variant could not be extinguised by of sand and water.
B4 D/Np 30A had a filling made from Dinitroacenapthen (Diacen) and PETN with wax and was similarly practicallly impossible to extinguish with water / sand
B 4 was a model explicitly conceived for harming the fire-fighing forces and had a filling of sodium in an hermetic casing made from zinc sheet. The sodium burned with blazing flame and formed - similarly the electron incendiary bombs - a hot mass of melted metal. And attempt to extinguish it with water will result in an explosion and projection of burning sodium all around.
 
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