Annealing Temp. lower than the required according ASTM Std. (B 409-01)
Annealing Temp. lower than the required according ASTM Std. (B 409-01)
(OP)
Dear all,
I have a material certificate of a Nickel-Iron-Chromium Alloy Plate (ASTM B 409-01, UNS N08811, incoloy 800HT) of thickness = 1 1/4 " (31,75 mm).
The problem is they are indicating annealing Temperature between 2012ºF and 2138 ºF (they do not specificate an unique temp.), but ASTM Standard Specification it requires minium 2100ºF.(point 5)
If the real Heat Treatment for this plate would be 2050ºF (an example), could I accept an annealing temperature lower in 50 ºF?. It is valid this material?
Many thanks
I have a material certificate of a Nickel-Iron-Chromium Alloy Plate (ASTM B 409-01, UNS N08811, incoloy 800HT) of thickness = 1 1/4 " (31,75 mm).
The problem is they are indicating annealing Temperature between 2012ºF and 2138 ºF (they do not specificate an unique temp.), but ASTM Standard Specification it requires minium 2100ºF.(point 5)
If the real Heat Treatment for this plate would be 2050ºF (an example), could I accept an annealing temperature lower in 50 ºF?. It is valid this material?
Many thanks
Talk To Other Members
RE: Annealing Temp. lower than the required according ASTM Std. (B 409-01)
the temperature is indicated in forging certificate (the accesory is a BW CAP, 14" sch. 140),
not in base material certificate (the ussual I think)
Many tanks again
RE: Annealing Temp. lower than the required according ASTM Std. (B 409-01)
Does it have the right grain size? Are the grain boundaries clean in a micro? If these are not known then I would not take the material until the thermomechanical history is clear.
And you must know the grain size.
= = = = = = = = = = = = = = = = = = = =
Still trying to help you stop corrosion.
formerly Trent Tube, now Plymouth Tube
eblessman@plymouth.com
or edstainless@earthlink.net
RE: Annealing Temp. lower than the required according ASTM Std. (B 409-01)
http://www.specialmetals.com/index.php