SEDL / STP / STP543-EB / STP38930S

Notched Bar-Bending Test

Movich, RC
Manufacturing research specialist, Lockheed-California Co., Burbank, Calif.

Pages: 10    Published: Jan 1974

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Abstract

A new method of testing for hydrogen embrittlement of high-strength steels is described. Results of tests conducted to compare the ability of the new method and the stress-rupture machine to detect detrimental absorbed hydrogen are given. The new method was found to provide reliability, simplicity, and low cost for hydrogen embrittlement testing and compared directly with the stress-rupture machine in both sensitivity and variability. Results of tests conducted to determine the ability of the new method to detect varying amounts of hydrogen obtained by cadmium plating using three different processes with and without baking are given. The new method is well suited for periodic quality control tests of cadmium plating processes, selective plating tests, testing of cleaners and paint strippers, and stress corrosion testing.