SOVIET TYPE 85 MM CALIBER ARMOR-PIERCING PROJECTILES

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-00810A005300210006-7
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 2
• Document Creation Date: December 20, 2016
• Document Release Date: July 18, 2007
• Sequence Number: 6
• Publication Date: January 1, 1955
• Content Type: REPORT

Approved For Release 2007/07/18: CIA-RDP80-0081 OA005300210006-7
CENTRAL INTELLIGENCE 'AGENCY .
INFORMATION REPORT
This material contains Information affecting the Na-
tional Defense of the United States within the mean-
ing of the Espionage Laws, Title 18, U.S.O. Secs. 793
and 794, the transmission or revelation of which in
any manner to an unauthorized person is prohibited
by law.
SECRET - US OFFICIALS ONLY
COUNTRY USSR
SUBJECT Soviet Type 85 mm Caliber Armor-piercing
Projectiles
REPORT
DATE DISTR.
NO. OF PAGES
REQUIREMENT
REFERENCES
THE SOURCE EVALUATIONS IN THIS REPORT ARE DEFINITIVE.
THE APPRAISAL OF CONTENT IS TENTATIVE.
(FOR KEY SEE REVERSE)
31 January 1955
Soviet type 55 mm caliber
armor-piercing projectiles reveal that a mecnanicai properties, i.e., hardness
and tensile strength, of these projectiles are as indicated in the sketch on
page 2.
STATE X I ARMY eVI X I NAVY I X I ~R
(NOTE. Washington distribution indicated by "X", Field distribunon by ##* it.)
PSI AEC PSI (:V :C I -A
//
Approved For Release 2007/07/18: CIA-RDP80-0081 OA005300210006-7
 Approved For Release 2007/07/18: CIA-RDP80-0081 OA005300210006-7
SECRET - US OFFICIALS ONLY L
-2-
Caliber 85 nm Armor-piercing Projectile (Soviet)
Hardness:
Brinell)
Tensile Strength
H
95
6vM
34
RB
53.4
ti rM
185
Hg
534
'Gv'M
192
HB
555
tir'M
200
(Rockwell)
HRC 25
IrM
89
HRC
U0
L'M
135
HRC
x+1.5
? rr
141
HRC
4+6
''~M
158
kp sic //2
kp sic /=2
kp sic /mm2
kp sic /mm2
sic nan2 1
kp (sic)/mm2
kp (sic /nnn2
kp (sic)/mm2
Comment. This should probably read kg/nan2.
Approved For Release 2007/07/18: CIA-RDP80-0081 OA005300210006-7