I actually figured it out, turns out the CX-950 IC plate was made out of silicon carbide, not alumina. I found out by checking out the only VPAM 10 certified plate made by tencate, the CX-850. I knew this one was already made out of SIC because denmark protection group's level IV plate has the same thickness and weight, and they openly advertise the material. Also, not only is the naming similar, but dividing the CX-950 IC's weight by the CX-850 IC gives exactly 1,5. I also had to account for the corners. Thus, the ME against RHA is exactly 3. It's around 2.4 against HHS. It still seems quite high, but I'm willing to believe it considering tungsten carbide often passes through steel very easily.
Check out my explanation above for the extreme values. Turns out I got the material wrong.
Also, that ceramic in the picture seems very good, even with the marketing. You mentionned Stanag Level 3, which rules out boron carbide since it needs to resist WC. Do you have any ideas what it's made of?
SirFlamenco got a reaction from Dragonstriker in Is ceramic 4 times as good as steel? Warning : MATH