Already answered. While melted steel can be an indicator for a high incendiary, molten steel in and of itself is only proof of sustained high temperature.
Therefore molten steel does not provide proof of thermite. However, one should look at the context of the molten steel and provide a hypothesis for its origin, not just look to confirm or deny one theory. If thermite did not melt the steel, what did? We would certainly need to look at the surrounding environment. Did the steel melt where it was found, or did it flow? Is there anything else in the steel? How long was it molten?
One thing I haven't seen mentioned, is where 3 of the engines went. I know one was in the street, and one may have gone down an elevator shaft, leaving two others somewhere. Absent their normal operating conditions, is it not possible that the engine could then reach temperatures beyond 1600C?
Where is your evidence in the real world for melted steel? The OP is about if there was melted steel, and you said it would not be proof of anything of value to 911 truth.
911 truth made up lies, from thermite to DEW, nukes and assorted BS.
Jet engine fuel supply ended at impact, the fuel pump failed, the engine driven fuel pump had no fuel, the engine fire stopped; jet engine cools... but it is no good to stop your engine from sustained cruise throttle, or full throttle; not good for the engine to cool that quick, the residual heat will can damage the engine... but in this case, the engine would start to cool instantly, even as the jet fuel fireball surrounds the area... no melted steel from the engine.
It is nearly instantly; when I shut off the fuel t-handle, or move the throttle to cut-off, the engine fire stops... the fuel in the system is dumped or recycled to a sump... end of fire
On 911 the turbine blades and fire present at impact, and all hot section of the jet engine parts ejected at impact, over 400 to 500 C, instantly set the jet fuel spray on fire inside the WTC.
The hot section of the turbine is hot because the engine is running and compressing air to run the fire with fuel... the hot section cools when the air and fuel are cut off at impact, end of jet engine fire, beginning of jet fuel fire ball when fuel fumes and mist are ignited by hot parts above the auto ignition temperature of the fuel.
You might not believe how fast the jet engine cools when the fuel is stopped; we were prohibited from shutting down engines in flight for practice unless we cooled the engine from cruise throttle settings; when restarted the EGT was extremely cool compared to the engines sitting at cruise; lower than when we cooled the engine at idle. (actually we were not allowed to practice engine shutdown... but... [suppose to the keep the engine at idle for engine out practice])
There was no melted steel found at the WTC - the jet engines were crushed by the WTC collapse if in the WTC.
But you did answer the OP, and implied making up BS about melted steel does not support the many varied idiotic claims made by 911 truth pertaining to melted steel.