Metal trellis cooking or freezing plants?

[Draak]

I'm considering using a metal cattle panel trellis for my dragon fruit, passion fruit, kadsura, and zabala. They seem super robust and pretty cheap! However, I'm concerned that the heat conductive properties of metal may scorch my plants in the summer sun or freeze my plants in the winter at the points where they contact the metal trellis. I've seen others blog about these concerns, though I haven't yet read anything conclusive:

https://homeguides.sfgate.com/pros-cons-metal-wrought-iron-trellis-48861.html
https://www.doityourself.com/stry/things-to-avoid-with-a-metal-trellis

Has anyone here who uses metal trellises noticed any problems with freezing or cooking their vines where it touches the trellis?

[nullzero]

Should be fine you can just wrap it in burlap.

[mbmango]

We have those cheap steel pergolas from HD, in dark brown too.  Passion fruit & chayote grow on it fine.  The vines end up shading the metal anyways.  Some small DF in pots also try to climb it.  Of course we don't get the temp extremes to really test either end of the range.