[TowerTalk] FW: Silver vs Aluminum vs Copper Re: OT:

[Jim Thomson]

Date: Sun, 3 Mar 2019 22:47:53 -0600
From: "Matt" <maflukey at gmail.com>

Subject: Re: [TowerTalk] FW: Silver vs Aluminum vs Copper Re: OT:
Inductor Calculator

<Look for 18-8 or 300 series stainless steel.   The 18 means 18% chromium and the 8 means 8% nickel.

<73

<Matt

<KM5VI

##  18-8  can still be found, but for the most part, the 18-8  has been replaced by the 3XX  series of SS.
304 SS  is  super shiny,  excellent corrosion resistance, and   readily available.   316  SS  is marine grade,
and is supposed to be the ultimate in corrosion resistance for harsh  environments.. like salt spray, acid rain etc.

##  as far as strength,  SS  is not strong material, it has the same tensile strength as  grade 2 mild steel, but plenty
good enough for most applications.  Phosphor bronze is a bit stronger, but our local suppliers  dont usually carry it.
However  Phosphor bronze  is readily available online.    I have also  silver plated  phosphor bronze  with the ..cool amp
goop....and ditto with   brass..and also copper.   IMO,  silver plated  phosphor bronze is about as good as it gets.
  Phosphor bronze is all I see being used by various HF  SW  Broadcast  ant  suppliers,  so they must be onto something.

Later.... Jim   VE7RF