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Material with Good Low-Temperature Properties for Pressure Vessel

08/20/2007 9:21 AM

sir;

like inconel ,invar material is used for high temperature; in the similar fashion i will want material which exhibits good property at low temperature for design of pressure vessel

thanks.

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#1

Re: material which exhibits good property at low temperature for design of pressure

08/20/2007 9:27 AM

You could design the pressure vessel with the materials of construction used in the surrounding pipework, with the sizing taking into account the temperatures involved.

Don't use cardboard.

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#2

Re: Material with Good Low-Temperature Properties for Pressure Vessel

08/20/2007 10:31 AM

<rant>

So many threads this month are missing the basic information needed to be able to help.

  • What is the fluid?
  • What is the temperature?
  • What is the pressure?

Without this information there is a snowball's chance of getting it right!

</rant>

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#3

Re: Material with Good Low-Temperature Properties for Pressure Vessel

08/21/2007 12:54 AM

A pressurized snowball in hell one could extrapolate, this post is short far to many data points.

Things like: PH; are there Thermal variations; What is the material pressurized; size of pressure vessel which is a factor of expansion and contraction causing stress.

so the answer to your question is 4.

no anger just frustration because we can't help.

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#4

Re: Material with Good Low-Temperature Properties for Pressure Vessel

08/21/2007 2:57 AM

Hi,

Invar was used by the first LNG (-180°C) carrier ships 30 years ago but high prize soon diverged this to aluminum.

The 2017 is suited down to liquid Helium. (Was used in the SATURN rocket liquid Helium tank inside the liquid hydrogen tank)

There is a compilation about "cryogenic materials".

RHABE

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#5

Re: Material with Good Low-Temperature Properties for Pressure Vessel

08/21/2007 11:50 AM

1. Be much more specific in stating your critical variables, such as ranges of temperature, pressure, number of applications of internal pressure and external forces.

2. There are no recent compendia of cryogenic materials properties, Two useful older ones are:

A. "Materials for superconducting magnets", by several authors at the cryogenics division of N.I.S.T. Thr publication date is around 1979
B. "Handbook of materias for superconducting machinery" compiled by the same group of peopole that did item 1. Publication date is around 1980.

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#6

Re: Material with Good Low-Temperature Properties for Pressure Vessel

08/21/2007 11:56 AM

If the following applies to this thread:

  • fluid temperature=250-300 deg. celsius.
  • fluid used=water.
  • fluid pressure=(approx. consider related to temperature)

as suggested by an e-mail message, then any number of materials could be used, for the above conditions could be said to apply to a steam boiler or drum operating at around 85Barg. One could start by looking at the properties of various carbon steels, as might be applicable to boiler plate, then use the standards for unfired and fired pressure vessels as appropriate to effect sizing of the various components. In the case of a fired pressure vessel, something more exotic might be appropriate for the heat exchange surfaces.

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