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Untitled - Sciencemadness Dot Org

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PBX 9404<br />

8.5 Spark Sensitivity.<br />

Electrode<br />

Lead Foil<br />

Thickness<br />

(mils)<br />

Sample<br />

Size<br />

(mg)<br />

Energy<br />

(J)<br />

&ass 3 28 0.42 0<br />

&ass 10 28 3.13 0<br />

9. MECHANICAL PROPERTIES<br />

96<br />

9.2 Tensile Strength and Modulus.<br />

Temperature<br />

(“(3<br />

Density<br />

khm3)<br />

’<br />

Ultimate<br />

Tensile Strength”<br />

(Psi)<br />

Tensile<br />

Modulus”<br />

(psi X iO-6)<br />

74 1.848 97 1.3<br />

49 1.848 170 1.4<br />

24 1.848 482 2.5<br />

-18 1.848 698 11.75<br />

-54 1.848 533 15.40<br />

Occurrence of<br />

Explosion<br />

W)<br />

aThese properties vary with the HMX particle-size distribution. They are time dependent; if<br />

PBX 9404 is exposed to temperatures >4O”C for long periods, its strength and modulus<br />

decrease.

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