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I am just curiious what was expected. In reallity the PQR test results for Tensile and Yield points and defines the limits of the procedure.
The Bends would define the quality of the weld (or Welder).
A36 has very low Tensile compared to something like 309. Also A36 is not the best choice for testing because it generally will have Laminations that make for problems in testing.
Oh and by the way, you are correct about the Preheat of 309, very little required, just enough to get the moisture out---uh what was that???? Did I hear some one scream???? Okay,,, Okay minimum preheat 100 F and just forget about the moisture. I sure didn't mean to open the can of worms :-)