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where can I find small diameter chrome tubing? (for racks)

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where can I find small diameter chrome tubing? (for racks)

Old 02-03-15, 05:38 PM
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stbtra
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where can I find small diameter chrome tubing? (for racks)

Looking for some tubing similar to Nitto racks, I can seem to find plenty of sources that aren't chromed I am not seeing any chromed tubing that's that small in diameter.
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Old 02-03-15, 05:42 PM
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Normally one chromes things after they're welded or brazed together.
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Old 02-03-15, 06:15 PM
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Nitto racks are chromed after construction. Chromed tubing is not sold as a raw material. You can use stainless, although it's not as strong as 4130 tubing
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Old 02-03-15, 09:10 PM
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busdriver1959
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Aircraft Spruce sells 4130 and stainless tubing in lots of diameters.
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Old 02-03-15, 10:21 PM
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I'm building a rack from rolled, welded-seam stainless tubing I bought from McMaster Carr. It's cheap, a buck a foot or something like that. Seems plenty strong, although you have to work a little to get rid of the signs of the weld. Don't put it in your lathe and sand it, I don't want to talk about why not.
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Old 02-04-15, 03:52 AM
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Stainless tubing can be fairly strong. In the manufacture it is work hardened which ups the strength. And the stiffness is similar even when the strength is not. Tubing is not normally the problem, the problem if any is at the joints, and in unsupported spans. But as mentioned the unsupported spans are mostly a mater of stiffness, so not a problem.

Frames are a different mater because they use fine wall tubing where the yield strength is an issue. Tubing wall thicknesses are similar in the rack material and the frame material, and yet the diameter is 4 times larger. That is a bouble whammy on the wall thickness relative to size, and also on the arch relative to wall thickness (harder to dent a smaller piece, and the ratio to the arch is lessor also). So relative to the wall thickness you have a scaleand geometry difference.
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Old 02-04-15, 10:01 AM
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Originally Posted by unterhausen View Post
I'm building a rack from rolled, welded-seam stainless tubing I bought from McMaster Carr. It's cheap, a buck a foot or something like that. Seems plenty strong, although you have to work a little to get rid of the signs of the weld. Don't put it in your lathe and sand it, I don't want to talk about why not.
Off Topic tangent-- Eric- I recently used the term "fire hosing" to describe the wild flaying about of a hose when high pressure water was running through it. Your warning reminded me of it Andy.
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Old 02-05-15, 12:04 AM
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I suspect OP was referring to Chromolly tubing vice chrome plated tubing... Anyone who has attempted to braze or weld chrome-plated tube without first grinding off the plating back a ways from the joint will swear at it, not swear by it.
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