Considering that the ZTZ96 hull composite was bug reported a year ago and it wasnt taken down after a full year, i guess its safe for me to conclude that im ok to post this source here too.
This document covers the composite armour of Type 85-II. As you may know, the Type 80/85 tanks were export designations whilst Type 88 were domestic versions. Type 85-IIM for example was exported to Sudan and they even have a license to produce it themselves. However China had an issue where they watched T-72’s get massacred in the 1991 gulf war and the best domestic tank they have was the Type 88A and Type 88B and they needed new and better domestic tank. Despite the number, whilst Type 88 was domestic version of Type 80, the Type 85 export actually came later than those tanks in the early 1990’s whilst Type 88 was from 1988… So what the chinese decided is that, their new Type 88C (III) will essentially be the Type 85-IIM but with a domestic engine that was built locally, although it did produce less horsepower. In the end the Type88C was renamed to Type 96 (ZTZ96).
Type 88 was actually the very first one to feature this new ‘683’ composite
However when the Type 85 came in the early 1990’s they improved the way its added to the hull and the composite actually extended down to the upper plate front tip.
So the ‘683’ add on composite was used on Chinese Type 88’s , Type 85’s and Type 96 tanks.
Source: https://www.doc88.com/p-3384866818635.html
20mm Modern HH Steel (444-514BHN) x 1.25
50mm Ceramic (Aluminum Titanate + Fibreglass Cloth) x 0.66
15mm Modern HH Steel (444-514BHN) x 1.25
15mm Air Gap x 0.05
100mm Steel (300BHN) x 1.00
25 + 33 + 18.75 + 0.75 + 100
177.5mm at 68 degrees = 474mm LOS
When APFSDS penetrates 380mm at 0 degrees, it defeats 177.5mm at 68 degrees (474mm LOS)
This is why ZTZ96 hull offers 380mm KE vs APFSDS
However… if the ZTZ96 recieved the Russia treatment, youd need 474mm at 0 degrees with APFSDS to penetrate that hull Armour.
So lets look at the facts again
T-72B features 176mm of Steel / 19mm Air / 10mm Rubber / 10mm anti radiation lining
Composite LOS thickness is 574mm LOS
ZTZ96 features 135mm of steel / 50mm ceramic / 15mm air
Composite LOS thickness is 534mm LOS
But somehow despite being only bit slightly bit better than ZTZ96 overall, its armour is modelled to be way stronger than ZTZ96. Russian Bias much?
T-72B should offer 550mm LOS (68) out of 574mm LOS composite
ZTZ96 Offers 474mm LOS (68) out of 534mm LOS of composite
In War Thunder the T-72B composite offers 660mm LOS out of 574mm LOS composite