Bottling bucket as Liqour tank?

My brew kettle as a single weld and I've been using it as a bottling bucket, but I finally ordered one and it comes in one Tuesday along with a batch of all-grain ingredients. I used to batch sparge with every pot I could find in the kitchen. I'm thinking about heating my sparge water in my brew kettle, pouring it in my bottling bucket, then fly-sparging into my kettle. Can a bottling bucket handle 180 degree water for 15-20 minutes?