Yes of course, DU alloys have also improved, but by 2001 there is no longer the same gap as there was in 1991, by both american and LO values they used and still use (afaik) 0.75% titanium since the late 1990s. There are other ways to try and improve APFSDS design outside of just the metals & alloys used, this is where A3, A4 etc have had major changes and improvements.
M829A2 was when we last saw a genuinely major improvement by adjusting alloy levels/properties, since then, as far as I know, only the process of quenching/etc is what’s improving the projectiles, rather than their alloys actively being worked on.
They know all the proprietary classified characteristics of the round and put it in a calculator. God forbid the Government gets their hand on LO and improves their rounds.
I will argue that if anything, DU alloys were even more underdeveloped than WHA at the time, given that DU projectiles were only starting to be used ~20 years earlier
Not exactly. Monoblock DU appeared as early as 1982 with M827, first proper WHA monoblock was DM33 in 1988, before that we had Tungsten carbide (i.e a VERY different class of projectiles).
Before then there was monoblock M829A0 in 1985, actually even M774 was a monoblock, DU had a ~decade of headstart.
WHA development lagged behind pretty massively until mid 90s at the earliest, they had to play catchup.
0.75% titanium is quoted directly from what the americans use for their high LD monoblock projectiles… As ive already stated, Your data is almost >50 years out of date, L & Ws papers are from 2001, that alone is a 10 year diffrence. Further developments in APFSDS projectiles are exactly what THEY predicted in their papers.
They specifically predicted the testing and potential useage of high density jackted penetrators out of WHA, exactly like XH45, a prototype jacketed penetrator with massive increase in penetration over even DM53.