October 10, 2025

A Comparison of Hydrogen Embrittlement Evaluation Methods for 1100 MPa Steels for Fastener Applications

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Notched specimens show increased sensitivity to hydrogen embrittlement compared to smooth specimens, indicating a risk in fastener applications.
Results showed that hydrogen charging levels significantly affect failure rates, suggesting careful monitoring of pre-charging time.
Evaluation methods included slow strain rate tests and constant load tests on different steel compositions with varying hydrogen concentrations.
The study highlights the complex relationship between hydrogen diffusion and mechanical loading, affecting failure dynamics under various conditions.

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This analysis compares hydrogen embrittlement methods in 1100 MPa steels, highlighting notched specimens' sensitivity to hydrogen during testing.

Kent et al. (2025) studied this question.

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This analysis compares hydrogen embrittlement methods in 1100 MPa steels, highlighting notched specimens' sensitivity to hydrogen during testing.