1. Robert Mushet's "Titanic Steel" was an early titanium alloy; different stuff.
2. Lefever and the other U.S. makers used Krupp Fluss Stahl but the composition may well have changed pre-1900 vs. pre-WWI.
3. Parker Steel = Acid Bessemer Resulphurized Rephosphorized AISI 1109 Carbon Steel. Somewhat similar to Parker Decarbonized or "Plain" Steel.
4. Titanic, post-WWI Vulcan, and Trojan were essentially the same; AISI 1030 and 1035 Medium Carbon steels.
Titanic did have low levels of both nickel and chromium compared to the others, but it would not be an "alloy steel".
5. Pre-1900 Vulcan was AISI 1015 with a lower tensile strength than AISI 1030.
We should however have pre-1900, pre-WWI, and post-WWI samples of each.
Last edited by Drew Hause; 02-28-2016 at 10:36 PM..
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