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spit happens
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What are the thicknesses of sheet metal?
How thick is 16gage? in inches> .000?
How thick is 18gage? in inches> .000?
Is exhaust tubing the same?
 

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Sheet Metal Thickness
--------------------------------------------------------------------------------

Gauge inch mm

30 0.0157 0.3988
28 0.0187 0.4750
26 0.0217 0.5512
24 0.0276 0.7010
22 0.0336 0.8534
20 0.0396 1.0058
18 0.0516 1.3106
16 0.0635 1.6129
14 0.0785 1.9939
12 0.1084 2.7534
10 0.1382 3.5103
8 0.1681 4.2697
 

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spit happens
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Discussion Starter #3
thanks,:thumb
 

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Don't know about the exhaust tubing for sure but from what I’ve seen it appears to be 16 to 18 gauge. Maybe somebody knows for sure.
 

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Geezer
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I thought they were called 16ga 'cause they looked like a double barrelled shotgun.
 

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Simple rule of thumb on gauge. 16 gauge measures the number of sheets of metal needed to be one inch thick, thus 16 ga. metal is 1/16th of an inch thick approximately.
 

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Geezer
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Ok guys, we're all wrong. It depends on which standard you use. I measured it. It is 0.071" using a flat 1/4" caliper. Accounting for the curvature it will be a little less. 16 ga is 0.0635 (galvanized metal), .0598 (for Manufacturers standard gauge for steel), or 0.0625 (for Birmingham gauge for sheets and hoops). Pick one! This is from the machinery handbook. It says that the thickness of steel sheets is based on weight = 41.82 lbs psf. for Mfgrs std gauge.
or go here:
http://www.efunda.com/designstandards/gages/sheet_forward.cfm

Looks like they are "about" 16 ga in thickness, but measure closer to 15 ga.
 
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