Jerry; Also 4130 is a heat treatable alloy. Since the welded area will cool
fairly rapidly it may well be one stage heat treated and brittle. Aircraft
4130 weldments are annealed or heat treated and drawn before use. 1018 will
not heat treat without adding carbon, so will not require annealing. Rich
Fox
-----Original Message-----
From: Jerry Dickinson <og_1leg@hotmail.com>
To: land-speed@autox.team.net <land-speed@autox.team.net>
Date: Wednesday, February 21, 2001 11:48 AM
Subject: Why not use 4130
>Why does the rulebook recommend Mild steel and not 4130? I know 4130 is
more
>diffacult to weld, but I would think if you had a welder that could weld it
>right 4130 would be stronger.
>_________________________________________________________________
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