Nutpool Materials

Boron Carbide (B4C) Powder: Composition should conform to the Type 1 of ASTM C 750-89 according to following.

Constituent   Composition Wt.% (Type-I)

Total Boron   81.0 maximum. 76.5 minimum

HNO₃ Soluble Boron  0.5 max

Water Soluble Boron  0.2 max

Fluoride  25 µg/g max

Chloride  75 µg/g max

Calcium   0.3 max

Iron   1.0 max

Total Boron Plus total Carbon  98.0 minimum

Particle Size Requirements: Median particle size i.e: d₅₀ = 8 µm d₉₀ ~ 20 µm, d₁₀ ~ 5 µm.

Powder particle morphology should be spherical.