How thick should steel be for a fire pit?

We weld the fire pit on block legs and the fire pit with grill grate from 10 mm hot-rolled steel plate. Plate that thick holds heat for a long time, keeps its shape and stands up to years of fires and any weather. The lighter bowl on a tubular stand is easier to move and store for winter, and for heavy use we can make it from thicker plate too. Read the full thickness comparison.