That's my understanding per Powertech Props. They have duplicated the geometry of the OEM Black Max for their MQF Stainless Series.
http://www.ptprop.com/images/stories/docs/dclass.pdf
I just bought a Black Max to give it a go. If its the right prop I'll ante up for the stainless version from PT.
I just read some interesting tests re value of Stainless vs Aluminum and it was eye-opening for offshore use. They showed increases in fuel efficiency, speed and thus range.