Gage and Inch 2

[dcredskins]

Is there any relationship between gage (16 gage or 14 gage etc.) and inch thickness?

 

[csd72]

look in the back of the green AISC design book, there is a chart giving gage thicknesses in inches.

 

[JKW05]

http://www.onlineconversion.com/gauge_sheet_metal.htm

 

[Lion06]

If you have a Dietrich Catalog, it is in there also.

 

[dcredskins]

I am talking about in terms of definition. I know there is a table that shows the relation between gage and inch. I am saying can we say when it is 12 gage it means 12 sheets can fit in 1 inch space? Or when we say 18 gage it means 18 sheets can fit in 1 inch space.

I guess, my question is how do you define gage in terms of inch or mm?

BTW, JKW05, thanks for the link. This is very useful.

 

[HgTX]

There's not a set formula for gauge vs. thickness. For some products and some sizes, X gauge corresponds roughly to 1/X inches. But it's not a uniform conversion.

Hg

Eng-Tips policies: faq731-376

 

[whyun]

Internet is so powerful. A search on wiki got me this:

http://en.wikipedia.org/wiki/Sheet_metal_gauge

There is no mathematical correlation between gauge numbers and thickness but apparently there is a correlation between thickness and the density of 41.82 pounds per square foot per inch of thickness per Machinery's Handbook.

SSMA's thickness chart expresses the minimum thickness in terms of mils (one thousandths of an inch) which is approximately 95% of the design thickness. The design thickness as approximately 95% of the actual thickness based on the 41.82 psf/in.

 

[dcredskins]

Thanks to all.

 

[BarryEng]

I always thought that 1/4 inch was 4 gauge (imperial) & every change of 6 gauges doubled or halved the thickness.

4 g was 1/4 inch
10 g was 1/8 inch
16 g was 1/16 inch
22 g was 1/32 inch

I just did a google & found out that this rule is only roughly correct - but OK for an empirical relationship (in the workshop with no reference books).