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Is hydrogen de-embrittlement required after chrome plating?

Is hydrogen de-embrittlement (degassing) required after chrome plating? If so what should be the temperature?

Narasimman VS
employee - Chennai, India
December 5, 2009

Hi, VS. High strength steel requires hydrogen de-embrittlement after a pickling or electroplating process. Mild steel does not. It must be done almost immediately at a temperature of about 375 deg. F., but there may be a spec for the parts in question. Please search the site for dozens of threads about hydrogen embrittlement. Good luck.

Regards,

Ted Mooney, P.E.
Striving to live Aloha
(Ted can offer longterm or instant help)
finishing.com - Pine Beach, New Jersey
December 6, 2009

Hi Narasimman,

Degassing treatment process depends on the base material strength and hardness before plating.

refer to the below standards:

ISO 9587: Metallic and other inorganic coatings � Pretreatment of iron or steel to reduce the risk of hydrogen embrittlement.
ISO 9588: Metallic and other inorganic coatings � Post-coating treatments of iron or steel to reduce the risk of hydrogen embrittlement

You will get more information.

Kannan Boopathi
- Salem,Tamil Nadu, India
January 8, 2010

Does pickling of steel in HCl acid cause any hydrogen embrittlement the weld in a tube or pipe?

Tom Lamping
sales - Davenport, Iowa
January 15, 2010

Hi, Tom. Yes, HCl pickling is a hydrogen generating process and can cause hydrogen embrittlement in hardened steel.

Regards,

Ted Mooney, P.E.
Striving to live Aloha
(Ted can offer longterm or instant help)
finishing.com - Pine Beach, New Jersey
January 18, 2010

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