Then there are the available coatings to think about.
Add in that everyone is confused about the nomenclature - which is itself confusing and nonsensical - and use definitions interchangeably when they shouldn't be makes everything more confusing still.
And the icing on the cake is the previous owners of the company put their mentally ill son in charge of that product line for several years and all the documentation and marketing material is now word salad and the maths side worse.
So anyway, I've finished my magnum derpus. No-one actually asked me to do it but then no-one has actually asked me to do anything for the last six months. This is what happens if you let Dilbert frolic free.