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The cause of welding cracks in aircraft steelsThe discussion in this article refers to gas welding of thin-walled parts of up to about 3 mm thickness. It was proven that by restricting the sulphur, carbon, and phosphorous content, and by electric-furnace production of the steel, it was possible in a short time to remove this defect. Weld hardness - i.e., martensite formation and hardness of the overheated zone - has no connection with the tendency to weld-crack development. Si, Cr, Mo, or V content has no appreciable effect, while increased manganese content tends to reduce the crack susceptibility.
Document ID
19930094461
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Muller, J
Date Acquired
September 6, 2013
Publication Date
October 1, 1940
Report/Patent Number
NACA-TM-955
Report Number: NACA-TM-955
Accession Number
93R23381
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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