[TowerTalk] Help identifying alloy in mast

[Doug Christensen]

One can often tell the amount of nickel, chromium, or carbon in an alloy by
doing a high speed grinding test. The higher the nickel, chromium or carbon
content, The more sparks you will have with the same " feed & speed ". Just
an old machinist that knows high alloy materials as compared to mild steel.



On Sun, Feb 9, 2020, 3:16 PM Richard (Rick) Karlquist <richard at karlquist.com>
wrote:

> I acquired a 1/2 inch wall, 2 inch OD mast as
> part of a tower deal.  I neglected to ask
> whether the mast was Chromoly or just steel.
> Is there any easy way to determine which alloy
> is present, such as doing a scratch test
> with a high speed steel bit or something?
> It seems reasonable that the previous user,
> having gone to the trouble of using such
> a thick wall mast, would also have gotten
> the best alloy.  But you never know about
> stuff like that.  The mast appears to be
> galvanized and has no visible rust.
>
> Rick N6RK
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