ASTM A694 Flange material

[AnEngineer]

How do I find out to which material group (or Pressure Temperature rating table) of ASME B16.5 does ASTM A694 F65 belongs? I can not find it in B16.5.

A reply will be appreciated.

 

[NozzleTwister]

AnEngineer,

Refer to MSS-SP-44, Steel Pipeline Flanges. You'll find your material as well as the Pressure-Temperature rating table in this standard.

Good luck,

NozzleTwister
Houston, Texas

 

[AnEngineer]

NozzleTwister,

Thank you. But I think MSS-44 is for large flanges. Does it apply to small bore flanges (2" to 8") as well?

 

[NozzleTwister]

AnEngineer,

The minimum size list in MSS-SP-44 is 12" NPS. This material is basically for High-Pressure Transmission Piping. I think the dimensions for the flange sizes that overlap B16.5 match and the pressure ratings are the close if not the same.

I'm stepping out of my area of expertise, but I have to think that you want to match your flange tensil strength to that of your pipe so you don't have a problem requiring a significantly heavier wall at your flange hub end than that of the wall thickness of your pipe.

Regards,

NozzleTwister
Houston, Texas

 

[AnEngineer]

NozzleTwister,
Thanks again. All I need to know is the psi @ 150F for 600# class for ASTM 694 F65. Is it listed in MSS-44 ?

 

[NozzleTwister]

AnEngineer,

Your temperature is covered, flange class covered, material covered but not the sizes that you are using. I think you need to do some comparsions of materials, ratings and flange dimensions between MSS-SP-44 and B16.5 and make some sound engineering decisions or calculations.

Good luck,

NozzleTwister
Houston, Texas