Yahweh is supposed to be all-knowing and all-powerful, but there's a theme you can find within the Bible that suggests a weakness in his attributes.
https://biblehub.com/judges/1-19.htm
The LORD was with the men of Judah. They took possession of the hill country, but they were unable to drive the people from the plains, because they had chariots fitted with iron.
https://biblehub.com/1_kings/6-7.htm
In building the temple, only blocks dressed at the quarry were used, and no hammer, chisel or any other iron tool was heard at the temple site while it was being built.
While the Bible never says what was used to fix Jesus to the cross, tradition says it was three iron nails. There are two reasons why the account of the crucifixion is atypical of normal Roman executions: first of all, they didn't usually waste good iron nailing victims to their crosses. They tied them to the posts. Secondly, crucifixion victims normally took days to die of dehydration and suffocation, which is why the Romans did it that way. But Jesus allegedly died in hours, not days.
So clearly, Yahweh has a weakness to iron, and I fear no gods I know how to kill.
Probably bronze.