Identifying a Green Wheel

[plongson]

I'm sorry for sounding SO retarded, but...I have a pedestal tool grinder with two plate mounted grinding wheels. One is obviously green and I use it for carbide...(DUH...)
The other is NOT obviously green and about the same grit. It looks more grey but I can talk myself into seeing...maybe some green but I'm just not sure.
Is there a definitive way to identify a wheel as being a wheel for carbide (silicon carbide abrasive??)
As a side note, the backing plate is green...

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[extropic]

I don't know the answer (except to experiment), so I'm hoping to learn too.

 

[benmychree]

Likely it is intended to be used on HSS.

 

[whitmore]

Database may be the answer.

If you were to always log the wheels when you mount them, on a computer, you
could retrieve such info in future years. That's more likely to work than scotch-taping
the wheel label on the grinder, and can hold cost/supplier/date
info that might be useful later.

Alas, my filing systems span several computer generations, I need to keep
three generations of computer running to read the old entries... paper files
would work, too.

 

[GeneT45]

If it's gray, and particularly because it seems like a similar grit, I'd assume that it's aluminum oxide (for HSS). My grinder is set up that way.

GsT

 

[verbotenwhisky]

Not an answer to your question; but, I bought a set of CBN wheels to sharpen wood lathe tools and have been using them for HSS and Carbide, they work well...

 

[Ulma Doctor]

Put some carbide against the wheel in question, if the carbide wears down relatively quickly, then you most likely have another green wheel, conversely if the carbide doesn’t seem to wear you most likely have an aluminum oxide wheel.
Green wheels are relatively easy to get grit to rub off with a pick, Aluminum oxide- not so much

 

[plongson]

Put some carbide against the wheel in question, if the carbide wears down relatively quickly, then you most likely have another green wheel, conversely if the carbide doesn’t seem to wear you most likely have an aluminum oxide wheel.
Green wheels are relatively easy to get grit to rub off with a pick, Aluminum oxide- not so much

This was good...Ya, it appears to be green by all accounts. THANKS!!

 

[RaisedByWolves]

Put some carbide against the wheel in question, if the carbide wears down relatively quickly, then you most likely have another green wheel, conversely if the carbide doesn’t seem to wear you most likely have an aluminum oxide wheel.
Green wheels are relatively easy to get grit to rub off with a pick, Aluminum oxide- not so much

We had a carbide grinder with coarse green wheel and a fine “green” wheel that was grey looking.

It’s likely a fine carbide wheel.