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topic 8314

Hydrogen Bakeout Temp


What temperature is required for hydrogen bakeout of hard chrome over steel and is it necessary to do this in an inert atmosphere?

Don Adams
- Buffalo, New York


Hello Don!

A lot of this information is compiled in AMS 2759/9, on "Hydrogen Embrittlement Relief (Baking) of Steel Parts". The temperatures listed there are
for carburized steel substrates, 275 °F
for 52100 and 440C substrates, 300 °F
for music wire, 325 °F
for all others, if necessary, 375 °F.

Air atmosphere is standard.

Good luck!

lee gearhart
Lee Gearhart

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