A 516 Gr 70 for 450°C
A 516 Gr 70 for 450°C
(OP)
A 516 Gr 70 can be used for exhaust system having temperature 450°C at atmospheric pressure. How the note G10 from ASME BPVC
Sec-II D will affect if I select the above material.
Sec-II D will affect if I select the above material.





RE: A 516 Gr 70 for 450°C
RE: A 516 Gr 70 for 450°C
RE: A 516 Gr 70 for 450°C
Disagree. The cost of using SA 387 plate, Gr 2 or Gr 11 is not that much more than SA 516 Gr 70 plate, and the welding being stringent means you use preheat. I doubt the plate thickness will require PWHT for an exhaust system. Why bother to evaluate CS when you have a better option????
RE: A 516 Gr 70 for 450°C
They have shown a very long life and are the preferred materials for OEMS.
"Thumb rules" for the corrosion rate in this kind of service are a joke
Can your welding division work with these materials, or is carbon steel the only material that they are familiar with ?
MJCronin
Sr. Process Engineer