... Several writers there insist that Sterling Silver is 92.5 Fine
Silver and the rest can be any other metal.
They are correct. At least, in the U.S. Not sure of some other
countries define it differently.
So, my question is: Does the above definition apply to Hollow Ware
rather than Jewelry grade Sterling Silver?
The definition applies to the type of metal. Whether you make hollow
ware, jewelry, or automobile bumpers out of it has no bearing on the
I know that in Europe the use of Nickel is not allowed in
Sterling. But what about in the USA? Some manufacturers insist that
their product is "nickel compliant." What about sheet and wire
products; are they also "nickel compliant?"
See above. The form of the metal is not an issue. With Nickel, the
issue is that no jewelry metal is allowed nickel content if the item
made from it will contact skin and can leach nickel. In practice,
this means that jewelry simply is not made with metals containing
nickel, even though this total avoidance is a bit of an over reaction
in many cases. But, you could still, if you wish to mix 92.5 percent
silver with 7.5 percent nickel, and call the result sterling silver.
You might not like the alloy much, but it would meet the definition
of sterling in the U.S.