Malleable Iron Rupture Pressure?
Malleable Iron Rupture Pressure?
(OP)
I'm looking for empirical data on rupture pressure for malleable iron fittings manufactured to ASME B16.3 to provide a basis for a Safety Margin argument.
The only other data I have is five 1"nps threaded elbows that were all exposed to 2500 psig air and did not leak!
The only other data I have is five 1"nps threaded elbows that were all exposed to 2500 psig air and did not leak!





RE: Malleable Iron Rupture Pressure?
Look at the technical and cad data tab.
http://www
RE: Malleable Iron Rupture Pressure?
Did you do any destructive tests? I am looking for empirical data on rupture pressure, thanks.
RE: Malleable Iron Rupture Pressure?
RE: Malleable Iron Rupture Pressure?
One way you can verify that the fittings are OK is test one to 1.5 times your working pressure or to the max allowable by standards. This not 100% but will point out any damage caused by the pressure excursion. You also might check the dimensions normal to the pipe axis as these fittings will yield.
Depending on your size and Class you can use the tables in the catalogue as you can rest assure that fittings are being tested to at least 1.5 times the max allowable.
In the last several years I've sen some pretty bad fitting from offshore. They were shot on Galvanizing and would bend on itself without breaking. along with extremely poor threads.
RE: Malleable Iron Rupture Pressure?
RE: Malleable Iron Rupture Pressure?