Not modified A8? Perhaps not by your definition, which is a specific manufacturer's steel available on the street (Latrobe).
By "Modified A8" I did not mean Latrobe's "Modified A8" that you have quoted, rather a special composition that was loosely based on A8, in other words A8 that has been modified for the end user's (Busse) requirements. It is not a stock item you can look up on a steel manufacturer's chart like you suggest in the post above. in other words, it is a version of A8 that was modified to suit Busse.
By "Modified A8" I did not mean Latrobe's "Modified A8" that you have quoted, rather a special composition that was loosely based on A8, in other words A8 that has been modified for the end user's (Busse) requirements. It is not a stock item you can look up on a steel manufacturer's chart like you suggest in the post above. in other words, it is a version of A8 that was modified to suit Busse.