As usual I was looking for something else and stumbled upon info from 1915 that gives the Poldi Antikorro steel has the following components:
0.145% Carbon
0.45% Silicon
0.50% Manganese
9.78% Nickel
Kind Regards, No Chromium? Poldi-- from Leopoldina Wittgenstein-- whose husband was an Austrian nobleman who developed the anti-korro/corro brand of gun barrel steel- the five crowns stamp sometimes seen on their trade mark may refer to his desire to have his steel exported and used by five other countries besides Austria-
Raimey
rse
