Haven't seen any documentation to prove otherwise.
<< You do realize there are stoves which give you overfire temps right?
Great! Please give me a few makes and model numbers. I'll look up the product information. Doesn't help with those that don't provide such information though.
In the absence of being able to see the documentation on such things, it doesn't exist.
<< The temperature at which plate steel starts to deform is known. The temp at which the temper of different alloys starts to change is known. It isnt to hard to apply that to stoves to determine what an over fire is.
Not to mention all modern stoves go through very extensive testing to determine the safe parameters they can be operated under. How do you think they come up with clearance requirements? That testing isnt done at normal operating temps. It is done for worst case scenario.
Oh, I believe then testing is thorough and comes up with good numbers.
The problem is, they don;t show them to the public. If they don;t show us the numbers, the numbers don't exist. Not for consumers who need guidance on how to operate their stoves.
You can;t refer me to testing that's not public and that I can't look up. You seem like an honest guy, but you apparently are inclined to believe stuff just because someone tells you. I'm not. (actually, I do but I don't like it.)
Don't you think it's unhelpful if not deceitful to sell someone a stove for $5,000, hand them an operating manual that tells them not to "overfire" the stove and disclaims any warranty if the stove is overfired, but no where tell someone the objective limits that define overfiring?
One stove I looked up that someone was talking about said not to add fuel "above the line of the firebricks." Now, they didn't SAY that adding fuel beyond that limit might cause an overfiring condition, but it was objective guidance people were given by the manufacturer. That's a LOT better than NOTHING in my view.
Now I'm inclined to stop in at a stove shop or two and torture the sales reps with these questions and see what they say!