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A-723 Alternative

A-723 Alternative

A-723 Alternative

(OP)
I recently took receipt of a steel forging made of, what I thought was going to be A-723 Grade 3 Class 4.

This is for an ASME pressure vessel.

The material certs from the forge refer to the material as B50AF480.  I have a call into the forge to find out what this stuff is, but in the meantime can anyone shed any light on this.

I have searched a number of material websites but have been unable to find any reference to this material.  

Any help in figuring out what this stuff is would be greatly appreciated.

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