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IMPACT SENSITIVITY OF METALS (TITANIUM) EXPOSED TO LIQUID NITROGEN TETROXIDE
ALLIED CHEMICAL CORP HOPEWELL VA
The purpose of this investigation was to determine the impact sensitivity of commercially pure Ti, Ti alloy 6Al-4V, and precipitation hardened 15-7 Mo stainless steel when exposed to liquid N2O4. An explanation is given of the probable mechanism of the limited ignition resulting from impact. Commercially pure Ti and Ti alloy 6Al-4V ignite about 50 of the time when impacted with a 0.5-in.-diam flat striker having an energy of 200 ft-lbs. Storage of the commercially pure Ti in N2O4 decreases the energy needed for 50 ignition to 60 to 70 ft-lbs. The sensitivity of the alloy is unaffected by storage in N2O4. Precipitation hardened 15-7 Mo stainless steel was not impact sensitive in liquid N2O4. Author
AF33 616 7114