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topic 8314

Hydrogen Bakeout Temp


(2001)

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


(2001)

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
metallurgist




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