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Steel breastplate, or Stalnoi Nagrudnik (Russian: Стальной нагрудник) is a type of body armor similar to a cuirass developed by the Red Army in World War II. The native Cyrillic abbreviation for the vest was "СН", the Cyrillic letters Es and En. It consisted of two pressed steel plates that protected the front torso and groin.
Granit ceramic plate for 6B45 body armor with hits from 7.62x54R SVD rifle. Ceramic armor plates, typically composed of boron carbide, silicon carbide, or other similar materials, are common place in military applications. The advantage of ceramic armor is that it is not only lighter than metals, but much harder as well, which enables it to ...
The use of steel plates sewn into flak jackets dates to World War II, and was replaced by more modern materials such as fibre-reinforced plastic, since the mid-20th century. Mail armour is a layer of protective clothing worn most commonly from the 9th to the 13th century, though it would continue to be worn under plate armour until the 15th ...
There was a 150-year period in which better and more metallurgically advanced steel armor was being used, precisely because of the danger posed by the gun. Hence, guns and cavalry in plate armor were "threat and remedy" together on the battlefield for almost 400 years. By the 15th-century, Italian armor plates were almost always made of steel. [12]
SAPI plates meant for body armor come in front and back plates which are identical, and smaller side plates. The front and back plates come in five sizes. Their dimensions are the following: [1] [13] Front and back SAPI plates: Extra Small - 1.27 kg (2.8 lb) | 184 x 292 mm (7¼ x 11½ in) Small - 1.59 kg (3.5 lb) | 222 x 298 mm (8¾ x 11¾ in)
In the basic configuration 6B23 uses fabric elements based on 30 layers of Kevlar-like material (TSVM-2). They are located on the chest, back and sides. The 6B23-1 configuration has a steel chest armor plate, and the 6B23-2 uses a Granit-4M ceramic plate on the chest and steel on the back. Weight, depending on the panels used, ranges from 4 to ...
MIL-DTL-46100E specifies a steel of identical hardness. [3] MIL-DTL-32332 specifies ultra-hard steel, with Brinell hardness in excess of 570. [3] A Chinese publication lists 30MnCrNiMo "685" steel as the material used in Chinese rolled armor plates, with a Brinell Hardness of HBW 444-514 (thin) / 429-495 (thick).
Although the US military requirements for body armor mirror the NIJ's on a surface level, the two are very different systems. The two systems share a 44 mm (1.7 in) limit on back-face deformation, but SAPI-series plates increase linearly in protection (with each plate tested against the preceding plate's threats), and require a soft armor ...
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