Season-cracking in brass is classically stated to be the first practical occurrence of stress corrosion cracking.1  Further-more, the degree of stress corrosion susceptibility of copper-base alloys varies widely from, for example, the highly susceptible 70-30 brass to the very resistant copper-nickels. In spite of these facts, there is still no generally accepted mechanism of stress corrosion cracking in copper-base alloys or even agreement as to whether one or more mechanisms are involved depending on the alloy/environment couple.

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