11/04/2026
16 gauge is 0.0598" in steel, 0.0625" in stainless and 0.0508" in aluminum.
Same number, three thicknesses. Gauge is a legacy numbering system, not a unit, and each material uses its own scale. A drawing that says "16 GA" without the material leaves someone downstream to guess.
The fix is one line: give the decimal thickness and the material next to the gauge. Our new gauge chart covers steel, stainless and aluminum from 10 to 24 gauge, and what thickness changes about forming, tooling wear and cost.
https://perrytoolanddie.com/blog/sheet-metal-gauge-chart/
Not sure which gauge your part needs? Call us on (720) 740-3350.