D4 4 iron Damascus?

[Drew Hause]

Thanks to Dave Suponski we tested one sample. Scroll down about 1/2 way here
https://docs.google.com/document/d/1...U/edit?tab=t.0

Crolle Damascus
2 Crescent No. 8 Knickerbocker 3 Rod Oxford (undoubtedly Belgian sourced), c. 1905 – 53,000 and 56,500 psi.
1 Wm. Powell Birmingham 3 Rod Oxford – 54,500 psi
1 Unknown English maker 3 Rod Oxford – 49,000 psi
1 Unknown source 3 Rod Oxford – 54,000 psi
1 Parker D4 4 Rod Turkish – 57,500 psi
1 Parker DD 6 Rod Turkish – 55,000 psi


For comparison Parker Titanic, post-WWI Vulcan, and Trojan steels were essentially the same; AISI 1030 and 1035 medium carbon steels with a tensile strength of 76,000 - 85,000 psi.