Technical choice
Technical choice
(OP)
I have the choice between grey cast iron as A48cl35 and a carbon steel as A216 WCB for a use @ 40°C max in gasoline, petrole.( casing for centrifugal pump)
I would like to know what is the best choice in regard of properties of this kind of steels.
Thank for your help.
JLuc
I would like to know what is the best choice in regard of properties of this kind of steels.
Thank for your help.
JLuc





RE: Technical choice
nick
RE: Technical choice
RE: Technical choice
RE: Technical choice
Our internal specifications would not permit CI in flammable service. DI was permitted in some flammable services after a thorough review.
I think some local codes prohibit CI in flammable service.
RE: Technical choice
RE: Technical choice
That is my main cosideration. Internally I've seen 3 catastrophic failures of CI pump housings, none in flamable service. 2 were due to external loading from piping and the other was from what we suspect was water hammer event.
I have seen 2 failures of CI pumps that caused major damage due to the resulting fires. The failed housings were sent to a metallurgical lab for failure analysis, but were suddenly withdrawn with no explanation. These pumps were pumping tolune and tolune and water. The most amazing thing about this was after the these fires the company continued to use CI pumps in this service.
RE: Technical choice
I'd use it for water services happily, but not for flammables.
What about ductile/malleable iron as an alternative to grey cast iron or cast steel?
RE: Technical choice