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Improved Heat Treatment Of Steel Alloy 4340New process takes significantly less time than prior heat-treatment processes. Involves placing steel plate directly in furnace and heat-treating. Plate then quenched in slowly moving oil to reduce stresses. Any deflection then pressed out. Possible uses of 4340 steel include new and improved bulletproof vests for military and police personnel and armor for bulletproof automobiles for military, police, diplomatic, and private users. Also used in other military land vehicles as tanks and in both military and civilian aircraft. Lighter armorplate enables land vehicles and aircraft to attain greater speed and maneuverability, consume less fuel, and afford better protection from snipers or terrorists.
Document ID
19930000301
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Cooper, Lawrence B.
(NASA Langley Research Center, Hampton, VA.)
Date Acquired
August 16, 2013
Publication Date
May 1, 1993
Publication Information
Publication: NASA Tech Briefs
Volume: 17
Issue: 5
ISSN: 0145-319X
Subject Category
Fabrication Technology
Report/Patent Number
LAR-14291
Accession Number
93B10301
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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