Thickness Gauge Conversions

[Josey]

Hi. Wondering if anyone knows where I could down load a chart for conversions
Thickness Gauge to fractions. decimal. and mm. I'm sure I have seen them on WW at one time
Thanks.

[wb4rt]

I googled steel gauge to inch chart. Many to choose from. Pick your favorite.

[Oscar]

Metal Thickness Chart PDF

[Josey]

Thanks Burt. and Oscar.

[jrporter]

I compared the one I have been using to Oscar's and noticed mine is B&S gauge, which is quite a bit different. I looked up what the B&S stood for and got this:

"The Brown & Sharpe (B&S) Sheet Metal Gauge (also known as the American Wire gauge, or AWG) is the American standard for ordering wire and sheet sizes. One side of this sheet metal gauge from General Tools is marked 0 to 36 in AWG sizes, while the decimal inch equivalents are marked on back. An essential tool for both jewelers and metalsmiths needing to quickly determine the thickness of sheet metal or metal wire."
I didn't realize that there were multiple standards for specifying sheet thickness - can someone explain why there are 2 and which one is most correct for sheet metal?

[jrporter]

Now I'm really confused. Looked at metalsupermarkets.com and they show gage charts for different alloys that have different dimensions.

https://www.metalsupermarkets.com/wp...auge-Chart.pdf

[ronsii]

Now I'm really confused. Looked at metalsupermarkets.com and they show gage charts for different alloys that have different dimensions.

https://www.metalsupermarkets.com/wp...auge-Chart.pdf

Yep.... thermal expansion coefficients can really play havoc on numbers!!!!






Remember those are by Gauge.... and if you look how 'Gauge' is determined you'll see why it varies.

[Oscar]

I downloaded mine from here years ago. Someone had posted it in a Microsoft Word and I just saved it as a PDF. For me as a hobbyist it's accurate enough.

[Insaneride]

Gauge vs thickness depends on the metal in question.

16 gauge copper is a different thickness than ss, aluminum or sheet metal etc. I think of it like Troy ounces or precious metal is not measured the same as other metals. That's the best analogy I can offer and I don't have time to goooogle it but as the op pointed out, there are different tables with different thickness for metal. I mostly see tables for sheet metal but I'm sure the sparkles are used to working with copper.


Edit: I see ronsi already posted a chart before I posted. Good explanation ronsi, I honestly didn't know it had to do with thermal coefficient but that does explain a lot to me.

[smithdoor]

Here list of steel gauges
Note: look for wrong gauge charts each industry's used there own sizes.

Overs year you remember the basic sizes

Carbon Steel Gauge Chart*
Gauge
Number Inches MM
7 | .1793 | 4.554
8 | .1644 | 4.175
9 | .1495 | 3.797
10 | .1345 | 3.416
11 | .1196 | 3.038
12 | .1046 | 2.656
14. | .0747 | 1.897
16 | .0598 | 1.518
18 | .0478 | 1.214
20 | .0359 | .911
22 | .0299 | .759
24 | .0239 | .607
26 | .0179 | .454
28 | .0149 | .378

Hi. Wondering if anyone knows where I could down load a chart for conversions
Thickness Gauge to fractions. decimal. and mm. I'm sure I have seen them on WW at one time
Thanks.

[farmersammm]

I believe Machinery's has tolerances on sheet metal, or maybe it was something else I read. Sheet metal is not standard. It has a range of thickness within each gage. I have the specs somewhere.

https://www.ebay.com/itm/Precision-M....c100008.m2219

I dunno if you can find these in real numbers anymore(I got mine about 100yrs ago)...........looks like all the ones out there are metric. Worthless. But anyways......these will give you the absolute true dimensions so there's no guesswork.

[wb4rt]

Just in case you are interested, Miller sells a handy material thickness gauge. It is around $5.00. I keep a couple close by, one hangs on my welder cart. I don’t think many people are aware of these.

https://www.millerwelds.com/accessor...s-gauge-229895

[farmersammm]

[ronsii]

Just in case you are interested, Miller sells a handy material thickness gauge. It is around $5.00. I keep a couple close by, one hangs on my welder cart. I don’t think many people are aware of these.

https://www.millerwelds.com/accessor...s-gauge-229895

Yep, they are handy when dealing with thin stuff... I have 5 or 6 of them laying around... if I remember right they came with welders??? I think I also have a similar one without the miller name on it that came with an old plasma.

[psacustomcreations]

I like these kind since they give a wider number of sizes.

https://images.platforum.cloud/uploads/202...87e4640bbc.jpg

https://images.platforum.cloud/uploads/202...411e2616e8.jpg

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[BD1]

Yep, they are handy when dealing with thin stuff... I have 5 or 6 of them laying around... if I remember right they came with welders??? I think I also have a similar one without the miller name on it that came with an old plasma.

I got a couple of them when I bought a new machines .
I prefer the round ones like Pat shows.
Happy New Year Guys !


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[Lis2323]

I have a Starrett and a cheap generic US Standard gage for sheet and plate.

Pics tell the story. Starrett on the left. El-cheapo on the right.


https://images.platforum.cloud/uploads/202...0cec9acf80.jpg




https://images.platforum.cloud/uploads/202...2d703a0483.jpg


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[hommeacier]

One caution that you want to remember is that a standard wire gauge will read 2 gauge numbers LOWER than a U.S standard gauge for sheet and plate. Thus making you think that you have a thicker piece of sheet than you have ! Also,copper sheet for the sheet metal industry,is determined by ounce designation per square foot. That is, 16 Oz. Copper sheet weighs 1 pound per sq.ft.
16 Oz copper,one of the most commonly used in the sheet metal industry, is equal in thickness to 24 ga or a tight, tight 25 ga. on a sheet and plate gauge. 👍