This is kind of interesting. I was checking into Hypalon fabric weights for a SIB I am in the process of ordering and went to the data sheet on Orca Pennel's website.
With 1670 decitex hypalon (from Orca), there simply is one fabric, with a single tensile strength rating and tear resistance rating (see link).
With '1100 decitex' hypalon (from Orca), there are several fabric subtypes that have tensile strength and tear resistance ratings that vary considerably from one to another.
If you are ordering a boat that uses '1100 decitex' hypalon, it would be best to find out from the manufacturer specifically which subtype it is. Here's the link:
http://www.pennel.fr/Pages/orca_fab_prod_spec.htm
