Was browsing zero friction cycling. He does lube testing and chain wear testing. He is doing some chain strength testing and tested some Izumi chains. Surprisingly they were not any stronger than road chains in his tests. I was under the assumption that 1/8" chains were stronger than 3/32" and 11/128".
anecdotally I broke a 710sl at the master link doing a standing start a couple a months ago, switched to Izumi after that.
Link:
https://zerofrictioncycling.com.au/chain_tensile/