17-4 H900 Concerns
17-4 H900 Concerns
(OP)
We currently use 17-4 PH H900 in many of our products. These are tensile load bearing items in all possible environments (-40°F to +160°F). Looking thru some of the existing threads on Eng-Tips, many of you recommend against using 17-4 in the H900 condition. Can you please explain why? As well, are there any available specs that can document these reasons?





RE: 17-4 H900 Concerns
should be avoided. For non-impact applications, such as valve seats, parts in the H925 condition have
performed satisfactorily down to -320EF.
RE: 17-4 H900 Concerns
We also make a lot of shafts, both large and small, from 17/4 and based on recommendation for ARMCO (AK Steel) we always H1125 or H1150. We buy a lot our shafts in this condition.
We also make a lot parts the we liquid nitride for wear properties. I have some liquid nitrided 17/4 drums/sleeves that have been operating for over 25 years in high pressure water pumps.
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RE: 17-4 H900 Concerns