Steel Grade 44 combines high strength, ductility,
toughness and feature good resistance to impact loads.
It is achieved not only by the steel chemical
composition, but also by using new melting and thermal treatment
methods.
The steel is manufactured as 2…15mm thick sheets.
The steel is widely used in body armor, civil
car armoring and bank equipment protection.
Mechanical Properties
| Ultimate strength, MPa |
Yield strength,
MPà |
Proportional limit, MPà |
Elongation, % |
RA, % |
Impact strength, J/sq.cm |
| 2050…2200 |
1550…1700 |
1400…1500 |
8..10 |
30…40 |
50…60 |
40…50 |
The steel allows production of protective tiles
of any shape; bending radius is less than 50mm.
The steel is weldable by special electrodes.
Protective performance of Steel 44:
| Weight of 1 sq.m of protection, kg |
Threat |
Impact velocity, m/s |
| 15,7 |
PM, 9mm
UZI, 9mm
ÒÒ. PSÒ, 7.62mm
.044 Ìàgnum |
311
340
437
440 |
| 31,5 |
AKM, PS-43, 7.62mm
AK-74,7N6, 5.45mm
Ì16, SS-109, 5.56mm |
705
890
830 |
The armor panels made of Steel 44 feature multi-hit
ability up to 5 hits into the area of 30õ30mm.
Ultrahighstrength bulletproof steel Grade
56 is made by a unique thermomechanical treatment method
which ensures the combination of high strength, ductility
and toughness in high-carbon armor steels with the carbon
content up to 0.4-0.55%.
The steel is patented (Patent RF No. 2015491).
Steel 56 ensures increase of bulletproof properties
of protection systems by15-20 % as compared to standard domestic
steels Grade Ts-85 and 44.
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