I don't believe you mentioned the size of the chain there is a US manufacture that makes all sizes from .072" 1.8 mm through 5/8" 16 mm they number their size from #1 to #50 if for instance your chain is 1/8" 3.2 mm or #6 made out of stainless it would have a maximum tensile of 45 lb, 30 lb for carbon steel
#13 or 1/4" is the smallest industrial rated ball chain at 115 lbs
https://ballchain.com/chain_sizes.html