On Fri, 5 Aug 2005 jon@dakota-truck.net wrote:
>
> : You'd be better off paying for some cold drawn seamless alloy tubing (4130
> : or 4340)
>
>
> Non-chromoly, to avoid potential weld issues, right?
4130/4340 = chromo.
1010/1018/1020 = mild steel.
I'd go for 1018 myself, it's your "standard" mild steel in my expirience
and is quite easy to weld.
> What about
> something like 1010 - might be cheaper? I wouldn't even care about
> the seam, probably... Unless I'm making something that requires one
> tube to ride inside another, I'd be OK with a weld seam to save some
> bucks.
if you use HREW tube be sure to keep the seam to the inside since it's the
most brittle part of the tube. Also keep it to the inside radius of any
bends. I'm a sucker for DOM and think it's generally worth the extra
expense but I know where you're coming from. steel prices suck.
If *I* were going to cheap out, I'd use DOM for stressed members (frame
rails, roll halo, side impact members) and HREW for triangulation.
DOM = drawn over mandrel.
HREW = hot rolled electricly welded, aka seamed tubing.
yours in topic dredging,
MikeM
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