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Education Your Way: Material Compatibility

Center for Hydrogen Safety

Connecting a global community to enable the safe and timely transition to hydrogen and fuel cell technologies.

发布日期: 2024年6月28日

Welcome to The Center for Hydrogen Safety's "Education Your Way" series. A series dedicated to enhancing your knowledge on hydrogen safety topics. We will feature a different topic each week and share ways you and your team can elevate your hydrogen safety knowledge.

Ensuring a safe and secure environment is a top priority for the CHS community. In our ongoing efforts to promote safety, we are dedicating this week's focus to the critical topic of Material Compatibility. This essential safety consideration helps prevent accidents by ensuring that materials used in hydrogen projects are resistant too processes that could lead to component breakdown, thereby safeguarding both people and property.

Questions we often hear –

Are there specific heat treatment processes that can improve the resistance to H2 embrittlement of steels? There are two effects from heat treatment of steels that may impact hydrogen embrittlement: 1) heat treatment can modify the steel strength level, and 2) heat treatment can alter the steel microstructure. Heat treatment that lowers the steel strength level will improve resistance to hydrogen embrittlement, while heat treatment that may create a more hydrogen embrittlement-resistant microstructure is an active area of research.

What are the cost to quality ratios of the materials? There is certainly a trade-off between cost and performance in hydrogen gas for the austenitic stainless steels (higher cost, higher performance) and ferritic steels (lower cost, lower performance). Aluminum alloys have an attractive balance between cost and performance in hydrogen gas.