hughpinder
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| posted on 20/11/08 at 09:47 AM |
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is this grade of steel ok
Looking for the steel for my roll cage and suspension arms
The spec is : cold drawn seamless BS6323 CFS3, with choices of "as drawn" (yield 360n/mm2, tensile 450), annealed (170 yield, 340
tensile) and normalised (215 yield,360 tensile).
I was thinking of using 50.8*2.03 for the roll cage - I think that fits the roll bar spec.
Which do I want?
(the full details can be seen at www.caparo.com/_assets/6690.pdf)
Thanks for any help
Hugh
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Mal
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| posted on 20/11/08 at 01:10 PM |
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Roll cage Tube
If you need the tube bending and you are having that done by a tube manipulation company I would contact them and ask what they normally use.
On the face of it the as drawn condition is the strongest and probably cheapest, if it does not have any post drawing heat treatment. Check also for
any differences in weldability between the 3
supply conditions.
Mal
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Peteff
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| posted on 20/11/08 at 01:15 PM |
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Normalising should make it easier to work it you are bending it yourself.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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NS Dev
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| posted on 20/11/08 at 07:55 PM |
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yep, you want normalised.
Annealed is too soft on the "unbent" bits and as drawn will crack on tight bends.
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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NS Dev
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| posted on 20/11/08 at 07:56 PM |
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ps yep "imperial-metric" 50mm x 2mm tube will be fine by the blue book.
Ps ps I have built a few cages
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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NS Dev
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| posted on 20/11/08 at 07:57 PM |
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ps ps ps.........
the bending process will work harden the bends to a higher tensile anyway
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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hughpinder
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| posted on 21/11/08 at 10:43 AM |
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Thanks for the info - I'll order the normalised stuff.
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