Radiator Heat tolerance

[XXXXXXXXX9]

What temperature of fluid can a radiator withstand within it without causing damage to the radiator?
I'm currently cleaning a radiator and this involves boiling the water, letting it rest for 5 min, and then filling the radiator with it then shaking etc..
I hope this doesn't cause damage to the radiator?

 

[misteriosly]

radiators are made from copper/brass/aluminium
http://www.engineeringtoolbox.com/melting-temperature-metals-d_860.html
As long as you are under 300 degrees i guess you will be fine.

 

[greens]

The melting point of the metal is a non concern.

When a car cooling system fails and you see a pillar of steam on the side of the road, do you think they reached 300C and melted their parts?

Of course not! The real problem is PRESSURE. If you're putting boiling water into a radiator and letting it cool you should be fine - pressure is going down.

If you have a closed loop and you heat water to boiling and have it go through a radiator, the pressure of the steam is going to blow a fitting first pass.

 

[misteriosly]

The melting point of the metal is a non concern.

When a car cooling system fails and you see a pillar of steam on the side of the road, do you think they reached 300C and melted their parts?

Of course not! The real problem is PRESSURE. If you're putting boiling water into a radiator and letting it cool you should be fine - pressure is going down.

If you have a closed loop and you heat water to boiling and have it go through a radiator, the pressure of the steam is going to blow a fitting first pass.

If he has a closed loop, 70% of his parts will fail probably.
90% of the pumps work with temps up to 60 degrees C, and fail beyond.
Tubes, plexi, acrylic also degrade @ 60 degrees, almost all plastic parts involved in water loop(including pump) have 55-80 degrees deflection temperature.
Also, i said 300 degrees implying a joke.
Except if you can show me, how you can boil the water up to 300 degrees and pour it in the rad safely ?
But i doubt any sane person would try cleaning their parts(rad) with anything above/other than 85-90 degrees C heated water.