With that said, how about circa 1905 Krupp Chrome Nickel Steel Brand "D"???
0.5% Carbon
3.26% Chromium
0.16% Manganese
1.26% Nickel
0.04% Phosphorus
0.11% Silicon
0.03% Sulphur
Tensile strength was near 106.5k lbs
Elastic limit near 92.5k lbs/in^2
A few Russian sources give Krupp Fluss Stahl as having:
0.45% Carbon
0.035%(Up to) Phosphorus
0.70% Manganese
0.25% Silicon
0.035%(Up to) Sulphur
They also note Special(Spezial-German)-Gewehr-Lauf-Stahl as being patented by Krupp in 1896 and having the following components:
0.61% Carbon
0.04% to 0.43% Phosphrous
0.65% Manganese
0.65%(??) Silicon
0.04% to 0.43% Sulphur
They give Nirosta(stainless steel) as having 18% Chromium & 8% Nickel in it's classified component content. Also noting that it was a very difficult steel to blue or cosmetically alter.
Kind Regards,
Raimey
rse
