We were discussing your claim:
And I was making the point that if air could get that hot (as it does in in a fire), then steam, which is simply mixed with the air, can also get that hot.
So now you want to argue water vapor VS steam ? The example Jazzy gave involved steam used to produce hydrogen. If you have a working model of air ( nitrogen, oxygen, water vapor, argon and carbon dioxide ) being used to produce a similar reaction Jazzy claimed feel free to bring it on but until then I'm going to be discussing the steam Jazzy claimed responsible for the damaged steel shown. water vapor is typically in the 1`3% range of total atmospheric gasses. Steam is at or nearly at 100% H2O.
Your comparing apples to oranges again.