Measure it to the cut chart. Easy peasy.

Or this

How do u determine if it is aluminum or SS

it was a serious question we are not all gifts of gods. No need for insults thought this was a forum to help each other not bring one down.

it was a serious question we are not all gifts of gods. No need for insults thought this was a forum to help each other not bring one down.

Sorry if you took is as an insult. Not intentional.

GT

You're in the right place bud.

A thick skin and not reading too much into a single post is probably the best advice I could give.

I am actually writing a building condition report right now (not by choice) and probably didn't have a good game face on.

My apologies.

GT

That is definitely NOT a AA impeller.  The vanes on a AA impeller stick out past the the shroud and hub (picture 1).  You can't simply measure the outside diameter of the shroud.  You want to measure the actual vane length by measuring the diameter where the vane ends (picture 2 & 3).

That impeller looks like it was cut at an angle only, as opposed to cutting the outside first and intersecting the ends of the vanes at this point.  This is sometimes done in an attempt to preserve any balancing that has been done (picture 4).  Picture 3 clearly shows the angle cut only without turning of the OD.

Lastly, you can see the witness marks left when the vanes were shortened on your impeller.  Picture 5 illustrates an example of just such a witness mark.

Good luck,

Joe

I am confident that you can handle it