Impact Sensitivity Of Metals (Titanium) Exposed To Liquid Nitrogen Tetroxide
Report Number: WADD TR 61-175
Author(s): Scott, Jr, H. F., Gerry, H. T., Hayford, A. W., Alley, C. W.
Corporate Author(s): Nitrogen Division, Allied Chemical Corporation
Laboratory: Directorate of Materials and Processes
Date of Publication: 1961-05
Pages: 36
Contract: AF 33(616)-7114
DoD Project: 7312
DoD Task: 73122
Identifier: AD0265619
Abstract:
The purpose of this investigation was to determine the impact sensitivity of commercially pure titanium, titanium alloy 6Al-4V, and precipitation hardened 15-7 Mo stainless steel when exposed to liquid nitrogen tetroxide. An explanation is given of the probable mechanism of the limited ignition resulting from impact.Commercially pure titanium and titanium alloy 6Al-4V ignite about 50% of the time when impacted with a 0.5 inch diameter flat striker having an energy of 200 ft-lbs. Storage of the commercially pure titanium in N2O4 decreases the energy needed for 50% ignition to 60-70 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.
Provenance: IIT
Author(s): Scott, Jr, H. F., Gerry, H. T., Hayford, A. W., Alley, C. W.
Corporate Author(s): Nitrogen Division, Allied Chemical Corporation
Laboratory: Directorate of Materials and Processes
Date of Publication: 1961-05
Pages: 36
Contract: AF 33(616)-7114
DoD Project: 7312
DoD Task: 73122
Identifier: AD0265619
Abstract:
The purpose of this investigation was to determine the impact sensitivity of commercially pure titanium, titanium alloy 6Al-4V, and precipitation hardened 15-7 Mo stainless steel when exposed to liquid nitrogen tetroxide. An explanation is given of the probable mechanism of the limited ignition resulting from impact.Commercially pure titanium and titanium alloy 6Al-4V ignite about 50% of the time when impacted with a 0.5 inch diameter flat striker having an energy of 200 ft-lbs. Storage of the commercially pure titanium in N2O4 decreases the energy needed for 50% ignition to 60-70 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.
Provenance: IIT