Low Temp Shaft Material 1

[kverspoor]

Does anyone have a suggestion for pump/motor shafting that will be exposed to "low temperature" (-130°C) fluid? Is there any reason to be concerned with using AISI 1045 or 4150?

Any opinion appreciated. Thanks.

Regards.. kv

 

[Rich2001]

These steels become brittle at low temperature.

DO NOT USE!

I would use and Austenitic Stainless Steel much greater toughness at low temperature conditions.

 

[MJCronin]

kverspoor,

Go to any pump website and inquire about cryogenic pumps.

They are always constructed from austenitic stainless material (or better)

Carbon steel(s) all exhibit a "nil ductility transition temperature" where material toughness drops away quickly with lower temperatures. (Do a web search on any of these terms, or pick up an elementary materials text book)

I agree with RICH2001, if you uses these materials, you may be heading for a disaster.

MJC