greek armours

[hoplite14gr]

On Metal Thickness Segunda quotes in his book aboout the Spartans:
0,5mm to 1mm Bronze shield rim (Athenisce Mitteilungen, 52 1927)
In my opinion it only decorative item.

Other examples: (Source Archeology Students text book)

A "Gorgon" bronze shield emblazon in the National Museum in Athens is
at places 5mm
A bronze Pilos helmet in the National Museum in Athens is 2mm
A bronze "perizoma" remnant from Sparta Museum betweem 2mm to 3mm
A Bronze "cheack-piece from Sparta Museum Museum 3,2mm
A "Kegel" helmet and a bell cuirass at Argos between
1,5mm to 3mm at places.
(This means that they reinforced the "vital" parts more.)
Iron "cheack-piece from Dion Museum 2mm


Also the M-1942 US is arround 3mm cast iron NOT steel and it can resist
a direct hit from 0.45 slug at 50 meters (Army test 1975)
Only the English and Karduchian longbows and some crossbows have better penetration and also proved this in reconstructions.

The friend of mine who obliged to give me info from his textbook also told me that his tutors told him that they allow a 20 % error element because of time but I do not know how they measure that.
If any other memeber has experience in chemistry or time effect on Metallurgy I hope can enlighten us more.
Kind regards
Stefanos