{
 "meta": {
  "dataset": "sheet-gauges",
  "description": "Sheet-metal gauge thickness by material (inches).",
  "schema_version": "1",
  "generated": "2026-08-12",
  "records": 28,
  "license": "CC BY 4.0 — attribution: BenchReference (benchreference.com)",
  "sources": [
   "msg-gauge-chart",
   "astm-b258"
  ],
  "provenance": "https://benchreference.com/sources/"
 },
 "entries": [
  {
   "gauge": 3,
   "steel_inches": 0.2391,
   "galvanized_inches": null,
   "stainless_inches": 0.25,
   "aluminum_inches": 0.2294
  },
  {
   "gauge": 4,
   "steel_inches": 0.2242,
   "galvanized_inches": null,
   "stainless_inches": 0.2344,
   "aluminum_inches": 0.2043
  },
  {
   "gauge": 5,
   "steel_inches": 0.2092,
   "galvanized_inches": null,
   "stainless_inches": 0.2187,
   "aluminum_inches": 0.1819
  },
  {
   "gauge": 6,
   "steel_inches": 0.1943,
   "galvanized_inches": null,
   "stainless_inches": 0.2031,
   "aluminum_inches": 0.162
  },
  {
   "gauge": 7,
   "steel_inches": 0.1793,
   "galvanized_inches": null,
   "stainless_inches": 0.1875,
   "aluminum_inches": 0.1443
  },
  {
   "gauge": 8,
   "steel_inches": 0.1644,
   "galvanized_inches": 0.1681,
   "stainless_inches": 0.1719,
   "aluminum_inches": 0.1285
  },
  {
   "gauge": 9,
   "steel_inches": 0.1495,
   "galvanized_inches": 0.1532,
   "stainless_inches": 0.1562,
   "aluminum_inches": 0.1144
  },
  {
   "gauge": 10,
   "steel_inches": 0.1345,
   "galvanized_inches": 0.1382,
   "stainless_inches": 0.1406,
   "aluminum_inches": 0.1019
  },
  {
   "gauge": 11,
   "steel_inches": 0.1196,
   "galvanized_inches": 0.1233,
   "stainless_inches": 0.125,
   "aluminum_inches": 0.0907
  },
  {
   "gauge": 12,
   "steel_inches": 0.1046,
   "galvanized_inches": 0.1084,
   "stainless_inches": 0.1094,
   "aluminum_inches": 0.0808
  },
  {
   "gauge": 13,
   "steel_inches": 0.0897,
   "galvanized_inches": 0.0934,
   "stainless_inches": 0.0937,
   "aluminum_inches": 0.072
  },
  {
   "gauge": 14,
   "steel_inches": 0.0747,
   "galvanized_inches": 0.0785,
   "stainless_inches": 0.0781,
   "aluminum_inches": 0.0641
  },
  {
   "gauge": 15,
   "steel_inches": 0.0673,
   "galvanized_inches": 0.071,
   "stainless_inches": 0.0703,
   "aluminum_inches": 0.0571
  },
  {
   "gauge": 16,
   "steel_inches": 0.0598,
   "galvanized_inches": 0.0635,
   "stainless_inches": 0.0625,
   "aluminum_inches": 0.0508
  },
  {
   "gauge": 17,
   "steel_inches": 0.0538,
   "galvanized_inches": 0.0575,
   "stainless_inches": 0.0562,
   "aluminum_inches": 0.0453
  },
  {
   "gauge": 18,
   "steel_inches": 0.0478,
   "galvanized_inches": 0.0516,
   "stainless_inches": 0.05,
   "aluminum_inches": 0.0403
  },
  {
   "gauge": 19,
   "steel_inches": 0.0418,
   "galvanized_inches": 0.0456,
   "stainless_inches": 0.0437,
   "aluminum_inches": 0.0359
  },
  {
   "gauge": 20,
   "steel_inches": 0.0359,
   "galvanized_inches": 0.0396,
   "stainless_inches": 0.0375,
   "aluminum_inches": 0.032
  },
  {
   "gauge": 21,
   "steel_inches": 0.0329,
   "galvanized_inches": 0.0366,
   "stainless_inches": 0.0344,
   "aluminum_inches": 0.0285
  },
  {
   "gauge": 22,
   "steel_inches": 0.0299,
   "galvanized_inches": 0.0336,
   "stainless_inches": 0.0312,
   "aluminum_inches": 0.0253
  },
  {
   "gauge": 23,
   "steel_inches": 0.0269,
   "galvanized_inches": 0.0306,
   "stainless_inches": 0.0281,
   "aluminum_inches": 0.0226
  },
  {
   "gauge": 24,
   "steel_inches": 0.0239,
   "galvanized_inches": 0.0276,
   "stainless_inches": 0.025,
   "aluminum_inches": 0.0201
  },
  {
   "gauge": 25,
   "steel_inches": 0.0209,
   "galvanized_inches": 0.0247,
   "stainless_inches": 0.0219,
   "aluminum_inches": 0.0179
  },
  {
   "gauge": 26,
   "steel_inches": 0.0179,
   "galvanized_inches": 0.0217,
   "stainless_inches": 0.0187,
   "aluminum_inches": 0.0159
  },
  {
   "gauge": 27,
   "steel_inches": 0.0164,
   "galvanized_inches": 0.0202,
   "stainless_inches": 0.0172,
   "aluminum_inches": 0.0142
  },
  {
   "gauge": 28,
   "steel_inches": 0.0149,
   "galvanized_inches": 0.0187,
   "stainless_inches": 0.0156,
   "aluminum_inches": 0.0126
  },
  {
   "gauge": 29,
   "steel_inches": 0.0135,
   "galvanized_inches": 0.0172,
   "stainless_inches": 0.0141,
   "aluminum_inches": 0.0113
  },
  {
   "gauge": 30,
   "steel_inches": 0.012,
   "galvanized_inches": 0.0157,
   "stainless_inches": 0.0125,
   "aluminum_inches": 0.01
  }
 ]
}