17-4PH compressor impellers
17-4PH compressor impellers
(OP)
Does anyone here have any operating experience with 17-4PH compressor impellers in H2S service?
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17-4PH compressor impellers
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RE: 17-4PH compressor impellers
What exactly are you looking for?
-The future's so bright I gotta wear shades!
RE: 17-4PH compressor impellers
Classic end-user vs OEM clash of priorities.
RE: 17-4PH compressor impellers
It was our practice to use 13%Cr steel AISI 410 grade for the FCC wet gas compressors in refineries. The impellers used to have limited life and effect of erosion was predominant and the impeller blade wall thickness was frequently reduced due to lower yield strength 63 kg/mm2 For AISI 410 for H2S environment as per NACE
NACE MR 0175 allows use of precipitation hardenable steels (like 17-4 PH) with yield strength max 68 Kg/mm2. This has provided longer life and better erosion resistance. we henceforth started using 17-4 PH for all our FCC wet gas compressors impellers with H2S upto 8 % I can remember.
hope this provides a supporting answer
bvsrtt
RE: 17-4PH compressor impellers
Many thanks for the helpful info. We have some erosion issues on a couple of other machines. Perhaps we should look take a closer look at 17-4PH for the high erosion areas.
RE: 17-4PH compressor impellers