12ga · Mild steel
- Nominal thickness
- 2.657 mm
- Material
- Mild steel
- Gauge system
- Supplier commercial material chart
More dimensions
- Gauge number
- 12
VALICALC · TECHNICAL REFERENCE
Sheet Metal Gauge Chart
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SELECTED REFERENCE
18ga · Mild steel
- Nominal thickness
- 1.214 mm
- Material
- Mild steel
- Gauge system
- Supplier commercial material chart
All fields & cell provenance
- Gauge number
- 18
- Gauge / material: Metal Supermarkets sheet-metal gauge stock reference — Material-specific chart / Mild steel gauge18 · verified 2026-10-06 · source value 18ga · Mild steel.
- Nominal thickness: Metal Supermarkets sheet-metal gauge stock reference — Published inch thickness, converted exactly · verified 2026-10-06 · source value 0.0478 in.
- Material: Metal Supermarkets sheet-metal gauge stock reference — Material-specific chart / Mild steel gauge18 · verified 2026-10-06 · source value Mild steel.
- Gauge system: Metal Supermarkets sheet-metal gauge stock reference — Material-specific chart / Mild steel gauge18 · verified 2026-10-06 · source value Supplier commercial material chart.
- Gauge number: Metal Supermarkets sheet-metal gauge stock reference — Material-specific chart / Mild steel gauge18 · verified 2026-10-06 · source value 18.
v1.1.0 · verified 2026-10-06
18ga · Mild steel1.214 mmBack to answer ↑
Explore the verified data
30 matching rows · 30 in this subset
| Gauge / material | Nominal thickness | Material | Gauge system | Actions |
|---|---|---|---|---|
| 12ga · Mild steel | 2.657 mm | Mild steel | Supplier commercial material chart | |
| 12ga · Aluminum | 2.053 mm | Aluminum | Supplier commercial material chart | |
| 12ga · Stainless steel | 2.778 mm | Stainless steel | Supplier commercial material chart | |
| 12ga · Galvanized steel | 2.753 mm | Galvanized steel | Supplier commercial material chart | |
| 12ga · historical US iron/steel | 2.778 mm | Historical iron/steel | US statutory gauge (1911 source) | |
| 14ga · Mild steel | 1.897 mm | Mild steel | Supplier commercial material chart | |
| 14ga · Aluminum | 1.628 mm | Aluminum | Supplier commercial material chart | |
| 14ga · Stainless steel | 1.984 mm | Stainless steel | Supplier commercial material chart | |
| 14ga · Galvanized steel | 1.994 mm | Galvanized steel | Supplier commercial material chart | |
| 14ga · historical US iron/steel | 1.984 mm | Historical iron/steel | US statutory gauge (1911 source) | |
| 16ga · Mild steel | 1.519 mm | Mild steel | Supplier commercial material chart | |
| 16ga · Aluminum | 1.291 mm | Aluminum | Supplier commercial material chart | |
| 16ga · Stainless steel | 1.588 mm | Stainless steel | Supplier commercial material chart | |
| 16ga · Galvanized steel | 1.613 mm | Galvanized steel | Supplier commercial material chart | |
| 16ga · historical US iron/steel | 1.588 mm | Historical iron/steel | US statutory gauge (1911 source) | |
| 18ga · Mild steel | 1.214 mm | Mild steel | Supplier commercial material chart | |
| 18ga · Aluminum | 1.024 mm | Aluminum | Supplier commercial material chart | |
| 18ga · Stainless steel | 1.27 mm | Stainless steel | Supplier commercial material chart | |
| 18ga · Galvanized steel | 1.311 mm | Galvanized steel | Supplier commercial material chart | |
| 18ga · historical US iron/steel | 1.27 mm | Historical iron/steel | US statutory gauge (1911 source) |
12ga · Aluminum
- Nominal thickness
- 2.053 mm
- Material
- Aluminum
- Gauge system
- Supplier commercial material chart
More dimensions
- Gauge number
- 12
12ga · Stainless steel
- Nominal thickness
- 2.778 mm
- Material
- Stainless steel
- Gauge system
- Supplier commercial material chart
More dimensions
- Gauge number
- 12
12ga · Galvanized steel
- Nominal thickness
- 2.753 mm
- Material
- Galvanized steel
- Gauge system
- Supplier commercial material chart
More dimensions
- Gauge number
- 12
12ga · historical US iron/steel
- Nominal thickness
- 2.778 mm
- Material
- Historical iron/steel
- Gauge system
- US statutory gauge (1911 source)
More dimensions
- Gauge number
- 12
14ga · Mild steel
- Nominal thickness
- 1.897 mm
- Material
- Mild steel
- Gauge system
- Supplier commercial material chart
More dimensions
- Gauge number
- 14
14ga · Aluminum
- Nominal thickness
- 1.628 mm
- Material
- Aluminum
- Gauge system
- Supplier commercial material chart
More dimensions
- Gauge number
- 14
14ga · Stainless steel
- Nominal thickness
- 1.984 mm
- Material
- Stainless steel
- Gauge system
- Supplier commercial material chart
More dimensions
- Gauge number
- 14
14ga · Galvanized steel
- Nominal thickness
- 1.994 mm
- Material
- Galvanized steel
- Gauge system
- Supplier commercial material chart
More dimensions
- Gauge number
- 14
14ga · historical US iron/steel
- Nominal thickness
- 1.984 mm
- Material
- Historical iron/steel
- Gauge system
- US statutory gauge (1911 source)
More dimensions
- Gauge number
- 14
16ga · Mild steel
- Nominal thickness
- 1.519 mm
- Material
- Mild steel
- Gauge system
- Supplier commercial material chart
More dimensions
- Gauge number
- 16
16ga · Aluminum
- Nominal thickness
- 1.291 mm
- Material
- Aluminum
- Gauge system
- Supplier commercial material chart
More dimensions
- Gauge number
- 16
16ga · Stainless steel
- Nominal thickness
- 1.588 mm
- Material
- Stainless steel
- Gauge system
- Supplier commercial material chart
More dimensions
- Gauge number
- 16
16ga · Galvanized steel
- Nominal thickness
- 1.613 mm
- Material
- Galvanized steel
- Gauge system
- Supplier commercial material chart
More dimensions
- Gauge number
- 16
16ga · historical US iron/steel
- Nominal thickness
- 1.588 mm
- Material
- Historical iron/steel
- Gauge system
- US statutory gauge (1911 source)
More dimensions
- Gauge number
- 16
18ga · Mild steel
- Nominal thickness
- 1.214 mm
- Material
- Mild steel
- Gauge system
- Supplier commercial material chart
More dimensions
- Gauge number
- 18
18ga · Aluminum
- Nominal thickness
- 1.024 mm
- Material
- Aluminum
- Gauge system
- Supplier commercial material chart
More dimensions
- Gauge number
- 18
18ga · Stainless steel
- Nominal thickness
- 1.27 mm
- Material
- Stainless steel
- Gauge system
- Supplier commercial material chart
More dimensions
- Gauge number
- 18
18ga · Galvanized steel
- Nominal thickness
- 1.311 mm
- Material
- Galvanized steel
- Gauge system
- Supplier commercial material chart
More dimensions
- Gauge number
- 18
18ga · historical US iron/steel
- Nominal thickness
- 1.27 mm
- Material
- Historical iron/steel
- Gauge system
- US statutory gauge (1911 source)
More dimensions
- Gauge number
- 18
How to use this data
Look up a source-qualified nominal thickness by material and gauge system; multiply inches by 25.4 for metric display. No AWG-style exponential formula is applied.
- Actual product thickness has tolerances. Gauge is a designation, not a linear geometric series.
CHECK THE METHOD
Worked example
Commercial 18 ga examples: mild steel.0478 in, aluminum.0403 in, stainless.0500 in; historical iron/steel 18 ga is a separately labeled.0500 in system.
Continue the reference workflow
Common lookup questions
Why does 18 ga show different thicknesses?
The material and gauge convention matter. Choose those before ordering or matching a sheet.
TRACEABLE DATA
Sources, scope & verification
Dataset v1.1.0
Last verified:
Six common gauges 12–22 in four selected commercial material charts, plus a separately labeled historical government iron/steel system.
Values are curated product facts or generated scenarios. Paid standards, complete catalogs and source diagrams are not reproduced. A verification date applies to this documented subset.
Metal Supermarkets sheet-metal gauge stock reference ↗
Type C · METAL · page published 2018-02-01; current revision not stated
Selected dimensional product facts only; no catalog text, diagrams, standard tolerances or full paid-standard tables.
Full provenance & artifact record
- Source checked
- 2026-10-06
- Use basis
- bounded-product-facts
- Artifact SHA-256
- 5a98810cee84dbd12915ab290daa9dc2db754f4b566cd43af286b80d2f83f98d
NBS Circular 18: standard gage for sheet/plate iron and steel ↗
Type B · NIST · 2nd edition / 1911-07-01
Government-authored gauge/fastener facts; version and scope retained.
Full provenance & artifact record
- Source checked
- 2026-10-06
- Use basis
- public-domain
- Artifact SHA-256
- a1838535ac29143ce2eb8c9af2df0daf87ba225496438ab78b536236187c9114
Xometry manufacturing sheet-stock sizes ↗
Type C · XOMETRY · Public sheet-stock lookup; revision not stated
Selected dimensional product facts only; no catalog text, diagrams, standard tolerances or full paid-standard tables.
Full provenance & artifact record
- Source checked
- 2026-10-06
- Use basis
- bounded-product-facts
- Artifact SHA-256
- Public web page inspected; no retained source artifact hash.