JonGD
Mechanical
- Mar 3, 2004
- 51
Hi guys,
I'm looking for any help that you are able to offer with respect to obtaining tensile test data for A182 F44 down to a cryogenic temperature of -101°C (or -150°F for our cousins who (for now ;-)) still cling to the old ways!).
I need this data to be able to run some design calculations for an API rated valve as it falls well outside of the API 6A temperature standards, which go no further than a frankly tropical -60°C (-76°F)!
Whilst Appendix G of API 6A discusses the process for designing a valve for use at elevated temperatures (which this valve also needs to do up to 180°C (356°F)!!), there is no mention of the process for use at lower temperatures.
So now that I have bored you with all of this background information, if any of you happen to have examples of this kind of testing data (UTS, 0.2% Proof Stress, Elongation and RIA) at these kind of temperatures (say -90°C (-130°F) and colder) - or can at least guide me in the right direction to go, I would be very much obliged!!
A Charpy Impact test will be performed at -101°C to ensure that the minimum value of 20J is reached, and naturally tensile testing will be performed at room temperature as part of material certification for A182 F44.
Thanks in advance
Jon
I'm looking for any help that you are able to offer with respect to obtaining tensile test data for A182 F44 down to a cryogenic temperature of -101°C (or -150°F for our cousins who (for now ;-)) still cling to the old ways!).
I need this data to be able to run some design calculations for an API rated valve as it falls well outside of the API 6A temperature standards, which go no further than a frankly tropical -60°C (-76°F)!
Whilst Appendix G of API 6A discusses the process for designing a valve for use at elevated temperatures (which this valve also needs to do up to 180°C (356°F)!!), there is no mention of the process for use at lower temperatures.
So now that I have bored you with all of this background information, if any of you happen to have examples of this kind of testing data (UTS, 0.2% Proof Stress, Elongation and RIA) at these kind of temperatures (say -90°C (-130°F) and colder) - or can at least guide me in the right direction to go, I would be very much obliged!!
A Charpy Impact test will be performed at -101°C to ensure that the minimum value of 20J is reached, and naturally tensile testing will be performed at room temperature as part of material certification for A182 F44.
Thanks in advance
Jon
