This is silly William. There is no steel without carbon, phosphorus, sulfur or manganese (at least since Robert Mushet).
Do you see carbon on that list of elements that are used to define "alloy steel" (and there are of course others)?
The presence of carbon makes steel an "alloy"
The presence of OTHER elements, and the concentration thereof, defines "alloy steel"
And low alloy 4140 is routinely referred to as "alloy steel"
https://www.azom.com/article.aspx?ArticleID=6769

The point was and is, as you well know, that the low concentrations of Ni and Cr in Parker Titanic steel would not make it chrome nickel alloy steel.
This isn't hard William. Please stop twisting and misrepresenting my clear-to-understand posts.

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