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UTV's Off Road ( RZR, YXZ, Mini Buggy, Carts,etc.) => UTV General Discussion => Topic started by: southernford246 on December 26, 2008, 09:47:08 PM
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what is the sizes in inches for 40x40x2mm, 30x30x2.3mm, and 20x20x1.6mm box tubing??
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To Convert from MM to inches divide by 25.4.
So
40x40x2 is 1.575 x 1.575x.079.
30x30x2.3 is 1.181x1.181x.091.
20x20x1.6 is .787x.787x.063.
The is no exact conversion, but the sizes are close to 1-1/2, 1-1/4, and 1"
.062 is 16 guage.
.074 is 14 guage.
.109 is 12 guage.
.120 is 11 guage.
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Those are common sizes, .19? is 13 guage, but I have not found many companies who stock 13 guage.
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so im gessing a 10 gauge is 1/8"
also what steel would you use a hot rolled or cold rolled? for box pipe and sheet steel?
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10 is actually .132 I believe. 11 is considered 1/8"
You don't have a choice of cold or hot rolled on the tubing.
Cold rolled is a better finish that hot rolled, but also more expensive.
We don't know your application for the steel, so it is hard to say which is better.
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fuel tank, side panles and floor pan
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I do
fuel tank... 14GA. Because of where I put them you could go 16 Ga. IMO 14 is a better choice...safer and easier to weld on
Floor pan ...16 GA. I roll the pan around the bottom of the cage so if won't hang and catch on obstacles
Body panels...18 GA. with cross braking and bends for strength works for me
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what is the difference between flats, plates, and sheet steel???
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The Thickness!
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Yup,
Sheets generally sto at 10 ga.
The it is dimentianal 3/16'' etc
Flats or flat stock are geneally flat stips of steel IE 1/4 x 4''
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ok what is the strongest of those 3 and cold rolled or hot rolled?
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For the Piranha you want to use 1 1/2 sq. 14ga. for the upper and lower frames.
In tubing this will be (.083) wall thickness. For the 32mm you want 1 1/4 sq. 14ga.
For 20mm use 3/4sq. 16ga. (.065) Download a steel catalog from:
http://www.centralsteel.com/tube.htm (http://www.centralsteel.com/tube.htm)
The square tubing you want is on page 119.
For the roll bars use 1 1/4 O.D. x 12ga. DOM welded (page 99)
For all of your laser or waterjet work you want to use H.R.P.O. this is hot rolled pickled in oil.
It has a smooth skin like cold rolled and it's cheap. You may have trouble getting small sizes in HRPO it comes in large sheets. Whoever does your laserwork should stock it. If you want smaller widths, use cold rolled flats. Hot rolled flats have a nasty scale.
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If you're going to be bending it you want to use hot rolled. or hrpo
cold rolled will crack if bent to tight. So for a fuel tank you would probably want hrpo
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COLD ROLLED IS MORE DENSE AND UNIFORM
than hot rolled, it also costs more, and usually has some mill scale on it for tanks and skins hot rolled is fine
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COLD ROLLED IS MORE DENSE AND UNIFORM
than hot rolled, it also costs more, and usually has some mill scale on it for tanks and skins hot rolled is fine
explain that a little better spec, it sounds like you say cold rolled has scale to it, I can say hot rolled sux to machine... ;D
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Cold rolled is just that ..It's rolled to it's thickness wnen it has cooled off, making the ''grains'' more uniform and compressed. Whereas hot rolled is rolled to a slighly thicker dim. while still red hot and left to cool,thus shrinking to it's final thickness...and the thickness will vary and so will the density.. Hot rolled steel tends to be softer, and more ''Sticky'' when machining...I'm no machinest and 20 years ago in school they say it was sticky due to the grains not being compressed,and stringy.. Now not to split hair but that chunk of alloy I sent you machined nice didn't it?
Alloys are a whole nother topic
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Yes alloys and cold rolled machines like a wet dream...
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what would be 20nbx2.3mm
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huh?
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google CONVERT
It's a program that will do all of your metric to SAE for you
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For The Edge plans nb is "nominal bore"
2.3mm would be the wall thickness.
I use 1" O.D. x 3/4" I.D. (1/8 wall) DOM for a arm pivot tubes.
For the arms themselves I use 1" O.D. 12ga. DOM
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for the piranha the gear shift tube and the rear arms
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For the gear shift tube I use 7/8 O.D. x 14ga.
You need the 7/8 O.D. to fit your motorcycle clutch perch assembly.
For the a arms I use what I posted earlier.
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im talking about the tube that you weld in the upper frame to mount the gearshifter
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I don't set mine up that way, but I would probably use 1" O.D. x 3/4 I.D. DOM
then you could use standard 1/2" I.D. x 3/4 O.D. oilite flange bushings for the pivot.
Or turn up some delrin bushings to fit that size.
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ooo that might be better
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http://www.emachineshop.com/machine-shop/Metal-Gauge-Chart/page344.html (http://www.emachineshop.com/machine-shop/Metal-Gauge-Chart/page344.html)
Here is a chart
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The charts are fine for sheet steel, but tubing gauge sizes can be different.
For tubing I'd check with whoever you're buying your steel from.
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ya i will have to wait till monday because they are all off till then
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whats the standard lengths of tube steel ??
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12 feet on some 24 feet on others
Steel supplier will cut it down for you
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whats the standard lengths of tube steel ??
random 17-21 on round
24 on square, 20 on angle...
In this neck of the woods anyhow... You have an alro down by you somewere?
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I forgot about random drops :P
It's cheaper to buy the drops as well
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Alro stocks DOM tubing... thats were i buy everything now... When you do and if you do buy dom, make sure they call and check for lengths, I bought 6 pieces and the guy said ya there 21', got there to pick them up "prepaid" and they were 18' at 3.00 per foot, 18' of tubing is a lot to be off...Another time i had a lady answer, she said this is the price regardless of the length...Told her she was fxxking nuts...
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i know cloest to me is remington steel and binjermen steel i havent been able to get a hold of eather because of the holidays