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How Thick Is 16 Gauge Stainless Steel? Thickness in Inches & mm
16 gauge stainless steel is 0.0625 inch thick, equal to 1.5875 mm and commonly rounded to 1.59 mm. This value refers to a commonly used U.S. stainless steel sheet gauge system. Because the same gauge number can represent a different thickness for another metal, industrial buyers should state the actual thickness in inches or millimetres when requesting material.
For fabrication and purchasing, gauge is best treated as a convenient thickness reference rather than a complete specification. Grade, dimensions, thickness tolerance, surface finish, quantity, product form, applicable standard, and inspection requirements may also need to be confirmed.
The metric value is commonly rounded to 1.59 mm. If an engineering drawing specifies 1.5 mm, 1.6 mm, or another exact thickness, the drawing dimension should control the order.
16 Gauge Stainless Steel Thickness in mm and Inches
In a commonly used stainless steel sheet gauge reference, 16 gauge corresponds to a nominal thickness of 0.0625 inch or approximately 1.59 mm.
The word nominal matters. A gauge chart provides a reference thickness, but it does not automatically define the permitted manufacturing tolerance for every stainless steel product.
Stainless steel sheet, nominal thickness 1.59 mm (0.0625 in, 16 gauge reference).
Buyers comparing different dimensions, finishes, and grades can also review the stainless steel sheet sizes, grades, and finishes guide.
Stainless Steel Gauge Thickness Chart
The following stainless steel gauge chart provides commonly referenced sheet thicknesses in inches and millimetres. The drawing or purchase specification should still define the actual required dimension.
| Stainless Gauge | Thickness in Inches | Thickness in mm |
|---|---|---|
| 10 Gauge | 0.1406 in | 3.57 mm |
| 12 Gauge | 0.1094 in | 2.78 mm |
| 14 Gauge | 0.0781 in | 1.98 mm |
| 16 Gauge | 0.0625 in | 1.59 mm |
| 18 Gauge | 0.0500 in | 1.27 mm |
| 20 Gauge | 0.0375 in | 0.95 mm |
| 22 Gauge | 0.0313 in | 0.79 mm |
| 24 Gauge | 0.0250 in | 0.64 mm |
Why 16 Gauge Stainless Steel Is Not the Same as Every 16 Gauge Metal
Gauge is not a universal dimensional unit. Different metal families use different gauge-to-thickness relationships. A material described only as 16 gauge can therefore be ambiguous if the metal type is not stated.
This is especially important when buyers compare stainless steel with carbon steel, galvanized steel, or aluminum. A gauge conversion table created for one material should not automatically be used for another.
A clearer material specification identifies the following information:
- Material: Stainless steel
- Grade: 304, 304L, 316, 316L, or another required grade
- Nominal thickness: 0.0625 in or approximately 1.59 mm
- Gauge reference: 16 gauge when useful for communication
If the project is still selecting the stainless grade, review the guide to austenitic stainless steel grades such as 304 and 316.
16 Gauge vs 18 Gauge Stainless Steel
16 gauge stainless steel is thicker than 18 gauge stainless steel. Using the same stainless steel gauge reference, 16 gauge measures approximately 1.59 mm, while 18 gauge measures approximately 1.27 mm.
0.0625 inch nominal thickness. Approximately 25% thicker than 18 gauge based on nominal thickness.
0.0500 inch nominal thickness. Lower thickness can reduce weight and may make forming easier in some applications.
Thickness alone does not determine which option is correct. Component geometry, loading, required stiffness, forming, weld design, surface finish, service conditions, weight targets, and the engineering drawing should also be considered.
For fabricated components, this stainless steel sheet metal fabrication and thickness guide explains how thickness interacts with bending, welding, forming, and finish selection.
How Much Does 16 Gauge Stainless Steel Weigh?
Using a nominal thickness of 1.5875 mm and a representative stainless steel density of approximately 8.0 g/cm³, 16 gauge stainless steel sheet weighs roughly 12.7 kg/m², or about 2.60 lb/ft².
Actual weight varies slightly with alloy density, delivered thickness, sheet dimensions, and manufacturing tolerance.
| Sheet Area or Size | Approximate Weight |
|---|---|
| 1 m² | 12.7 kg |
| 1 ft² | 2.60 lb |
| 1,000 mm × 2,000 mm | 25.4 kg |
| 1,219 mm × 2,438 mm | 37.7 kg |
Common Uses of 16 Gauge Stainless Steel
A thickness around 1.59 mm provides a useful balance between rigidity, durability, weight, and fabrication capability for many stainless sheet applications.
Depending on grade, design, finish, and service conditions, common applications can include:
- Commercial kitchen work surfaces and equipment panels
- Food-processing equipment components
- Machine covers and industrial enclosures
- Cabinets and equipment housings
- Fabricated brackets and supports
- Countertops and worktables
- Architectural sheet-metal components
- Protective panels and machine guards
These are common examples rather than universal thickness requirements. Final thickness should be determined from the drawing, mechanical requirements, fabrication method, corrosion environment, applicable code, and customer specification.
Nominal Thickness vs Thickness Tolerance
Nominal thickness describes the target dimension used to identify the sheet. Thickness tolerance defines the permitted variation from that nominal dimension.
A stainless steel gauge chart can identify 16 gauge as approximately 1.59 mm, but it does not establish the allowable delivered thickness range for every grade, width, finish, product form, or specification.
Thickness tolerance becomes more important when delivered thickness affects:
- Part fit and dimensional clearance
- Bending and forming behaviour
- Component stiffness
- Finished component weight
- Welding and fabrication procedures
- Inspection and acceptance requirements
If a project specifies a critical minimum or maximum thickness, state the requirement in the drawing or RFQ instead of relying only on a gauge chart.
For thicker flat products and project-specific requirements, buyers can also review the stainless steel plate thickness and ASTM standards guide.
How to Specify 16 Gauge Stainless Steel in an RFQ
The phrase 16 gauge stainless steel may be enough for an initial discussion, but an industrial quotation should normally contain additional material and purchasing details.
State 304, 304L, 316, 316L, 430, or another project-specified stainless grade.
Use the actual nominal thickness in mm or inches. Add 16 gauge only as a reference when useful.
Specify sheet, coil, strip, cut blank, or another required supply form.
Include dimensions, tolerance, finish, quantity, documentation, packing, and destination.
Specify the Stainless Steel Grade
State the required grade, such as 304, 304L, 316, 316L, 430, or another project grade. If the grade has not been selected, provide the service environment and applicable specification instead of assuming different grades are interchangeable.
State the Actual Nominal Thickness
Nominal thickness: 1.59 mm / 0.0625 in (16 gauge stainless reference)
Confirm the Product Form
Specify whether the material is required as sheet, cut sheet, blank, strip, or stainless steel coil. Product form can affect processing, dimensions, packing, and quotation.
State Dimensions and Finish
Provide width, length, coil dimensions, or finished blank dimensions as required. Also identify the required surface finish, such as 2B, BA, No.4, hairline, No.1, or another project-specific finish.
Confirm Tolerance and Documentation
If thickness tolerance is important, identify the project drawing, material standard, customer specification, or acceptance range. Include any required inspection documentation, material certificates, marking requirements, packing requirements, and delivery information.
16 Gauge Stainless Steel Buyer Checklist
| RFQ Item | What to Confirm |
|---|---|
| Material | Stainless steel |
| Grade | 304, 304L, 316, 316L, 430, or project-specified grade |
| Thickness | 1.59 mm / 0.0625 in when using the common 16 gauge stainless reference |
| Tolerance | Applicable material standard, drawing, or project requirement |
| Product Form | Sheet, cut sheet, coil, strip, or fabricated blank |
| Dimensions | Width, length, coil width, or required blank dimensions |
| Finish | 2B, BA, No.4, HL, No.1, or project-specific finish |
| Processing | Cutting, bending, welding, polishing, forming, or other fabrication |
| Quantity | Required sheets, pieces, kilograms, or tonnes |
| Documentation | Applicable standard, inspection document, test certificate, or customer requirement |
| Logistics | Packing, destination, marking, and delivery requirement |
For a broader purchasing checklist covering dimensions, grades, finishes, and inspection requirements, see the stainless steel sheet buyer guide.
FAQ About 16 Gauge Stainless Steel
How thick is 16 gauge stainless steel in mm?
16 gauge stainless steel is approximately 1.59 mm thick in a commonly used U.S. stainless steel sheet gauge reference. The exact conversion from 0.0625 inch is 1.5875 mm.
How thick is 16 gauge stainless steel in inches?
16 gauge stainless steel is 0.0625 inch thick in the commonly used stainless steel sheet gauge reference.
Which is thicker, 16 gauge or 18 gauge stainless steel?
16 gauge is thicker. A common stainless gauge reference lists 16 gauge at approximately 1.59 mm and 18 gauge at approximately 1.27 mm. Based on nominal thickness, 16 gauge is about 25% thicker.
Is 16 gauge stainless steel always exactly 1.59 mm?
No. The 1.59 mm figure is a nominal gauge reference. Actual delivered thickness can vary within the applicable manufacturing or contractual tolerance.
Is 16 gauge stainless steel the same thickness as 16 gauge carbon steel?
Not necessarily. Gauge values depend on the material-specific gauge system, so the same gauge number can represent different thicknesses for stainless steel and carbon steel.
How much does 16 gauge stainless steel weigh?
At a nominal thickness of 1.5875 mm and a representative density of approximately 8.0 g/cm³, 16 gauge stainless sheet weighs about 12.7 kg/m² or approximately 2.60 lb/ft².
Can stainless steel be ordered using only a gauge number?
Gauge is useful for communication, but an industrial RFQ should normally also state nominal thickness, grade, dimensions, tolerance, product form, finish, quantity, applicable standard, and documentation requirements.
Final Buying Note
For the commonly used U.S. stainless sheet gauge reference, the key conversion is 16 gauge stainless steel = 0.0625 inch = 1.5875 mm, commonly rounded to 1.59 mm.
For an industrial order, the gauge number should be supported by the required grade, nominal thickness, tolerance, dimensions, finish, quantity, product form, applicable standard, and inspection requirements.
Send the required grade, thickness, dimensions, tolerance, finish, quantity, application, documentation requirements, packing, and destination through Voyage Metal's contact page so the requirement can be reviewed against the project specification.