F51 - Duplex SS HT and properties
F51 - Duplex SS HT and properties
(OP)
Hello Friends!
I have a question regarding SA182-F51 duplex SS.
We have a customer asking for charpy values of 25/33Ft-lb at -50 deg F. We have no exposure to this steel and we are not sure if this is achievable. In fact we need to carry out heat treatment trials to achieve a 35 -50% Ferrite structure, which is another requirement. My question is; Will it be possible to achieve the specified Charpy value at the specified -50 deg F?? By what heat treatment can we achieve both Charpy values and microstructure? Any thoughts to share??
Thanks in anticipation,
I have a question regarding SA182-F51 duplex SS.
We have a customer asking for charpy values of 25/33Ft-lb at -50 deg F. We have no exposure to this steel and we are not sure if this is achievable. In fact we need to carry out heat treatment trials to achieve a 35 -50% Ferrite structure, which is another requirement. My question is; Will it be possible to achieve the specified Charpy value at the specified -50 deg F?? By what heat treatment can we achieve both Charpy values and microstructure? Any thoughts to share??
Thanks in anticipation,





RE: F51 - Duplex SS HT and properties
You don't have much latitude, if you follow ASME SA 182
for F51 duplex steel, per Table 1
solution treatment at 1870 deg F min, followed by liquid quenching.
Run a test coupon per the above, and see what happens.
RE: F51 - Duplex SS HT and properties
You will need to be about 40-45% ferrite, any lower and you will get some strange results. A fine structure will help you.
I don't know if you will make the impacts. Only testing will tell.
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