This thread, and link I provided, are well researched and factually correct William. There is no statement that U.S. makers sources their decarbonized tubes from England, and you know it.
And obviously the decarbonized tubes used by Remington in 1900 and Parker in 1917 were of different quality and composition than Henry's stuff in 1860 or 1880.
I also disagree that the documented barrel composition analysis and tensile testing is of no value; but it was my money to waste. Tubes were purchased in large batches, and the composition of a 1898 Hunter Arms Armor Steel barrel accurately reflects the other Armor Steel tubes used in that period.
re: "alloy steel" let me help you with some cut and paste
"The term "alloy steel" is the standard term referring to steels with other alloying elements added deliberately in addition to the carbon. Common alloyants include manganese, nickel, chromium, molybdenum, vanadium, silicon, and boron."
You are correct that carbon steel with manganese is a "low alloy steel". The AISI 4XXXs are "alloy steels" with nickel, chromium and molybdenum, or combinations thereof, with specific ranges of concentrations ie. 4140. The Parker Titanic steel specimen did not fit those criteria.
And you are projecting again William, which bothers me not a bit. Is there any self-respect left William?
