"Stress Corrosion Cracking"

Question:

"Could washing High Strength Steel Landing gear parts with a commercial water based detergent below 170F contribute to Hydrogen Embrittlement of the steel parts?"

Answer:

Your washing procedure would not, on the surface, appear to be aggressive with respect to hydrogen embrittlement (HE). However, we can not definitively answer your question as specifically posed, based on the information you provided, as the potential for HE depends on the strength level, which you did not specify, the specific detergent and its corrosiveness, which you did not specify, the alloy, which you did not specify, plus other unnamed factors which could affect corrosion of the component, promoting HE.

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