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T72 Trials In The Bundeswehr And The Us Army?


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#101 Hakka

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Posted 11 September 2017 - 2356 PM


 
 
AG-4 isn't glass textolite, it's fiberglass.
 

They are both glass fibres in phenolic resin, but in textolite glas fibres are woven to a textile like mesh, while in fiberglass they are placed "at random". In tank armor version I am pretty sure they are in 1st form (at least it looked so on the cutaway).
http://www.eurokompo...les-protection/
Which subvariant of AG-4 was used in tank armor anyway?

Yes, that's right, the glass fibers are woven into sheets, so that makes it a glass textolite and not a fiberglass. I have heard the term "steklotekstolit" many times in reference to the T-72, so it simply cannot be fiberglass, so no AG-4. I read that it is probably KAST-V.

#102 bojan

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Posted 12 September 2017 - 0635 AM

But isn't binder the same?



#103 Hakka

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Posted 12 September 2017 - 0647 AM

But isn't binder the same?

 

Same phenolic resin, yes, but simply different layout of glass fibers.



#104 bojan

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Posted 12 September 2017 - 1722 PM

http://skmash.ru/str123.php

From what I understand AG-4S and AG-4NS use woven glass fibres?



#105 Hakka

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Posted 12 September 2017 - 1935 PM

The fibers in AG-4S are arranged in parallel, not woven, and not in textile form.

Edited by Hakka, 12 September 2017 - 1936 PM.


#106 Wiedzmin

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Posted 13 September 2017 - 0126 AM

T-64/72  used STB-3-FEF-N in first versions...



#107 Hakka

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Posted 13 September 2017 - 0143 AM

T-64/72  used STB-3-FEF-N in first versions...


Thanks for clearing it up. What were these first versions, though? Are they prototypes, or just early batches? And is the difference between STB-3-FEF-N and later glass textolites big enough to make a difference in protection?




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