I was flipping thru >>Schuss & Waffe<< from 1913 and ran across these Böhler adverts with steel particulars.
Note too how the tubesets may have been supplied & that F.A. Klett was the authorized dealer in Suhl.




Streckgrenze(Stretch) & Bruchgrenze(Shear-I guess - breaking point) values in kg/mm^3.


Serbus,

Raimey
rse

Böhler Antinit - Vergütet(Hardened & Tempered)

Böhler WIIG45 - Vergütet

Böhler WIIG43 - Vergütet

Böhler Spezial - RDH, Vergütet

Böhler Blitz - RDH, Geglüht(Annealed), Vergütet

Have no idea on >>RDH<<??

Serbus,

Raimey
rse