PowerBox Pro DIN bracket

Does anyone know what the DIN rail bracket supplied with the PowerBox Pro is made from? Will it survive outdoors?

Bottom of the product page has pictures of all the stuff that’s in the box:
https://mikrotik.com/product/RB960PGS-PB

You mean this one?
https://img.routerboard.com/mimg/part61391160745m.jpg

Yes, that’s the one. It comes in a bag labelled “K-27 Din Rail Bracket”.