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5083 aluminium alloy is an aluminium–magnesium alloy with magnesium and traces of manganese and chromium. It is highly resistant to attack by seawater and industrial chemicals. [1] Alloy 5083 retains exceptional strength after welding.
The M113 is built of 5083 aircraft-quality aluminum alloy. Aluminum alloy is lighter than steel but requires around three times the thickness for an equivalent level of ballistic protection, meaning the armor of the M113 was only designed for 7.62 mm and shell splinter protection.
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The basic hull of the AGS is made of welded 5083 aluminum alloy, [6] with a modular armor system that allows the vehicle to be equipped according to requirements. [8] Aluminum was chosen instead of steel in order to reduce the weight of the vehicle. The weight limit for the vehicle was driven by the requirement that it be capable of LVAD. [131 ...
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). According to the same publication, older vehicles use a 22SiMn2TiB "616" steel with a hardness of HBS ≤ 219.
The M2's base armor consists of an all-around 1 inch (25.4 mm) thick aluminum hull (mix of no. 5083 and no. 7039 alloys), heavily sloped in the front and mostly vertical on the sides and rear. The bottom of the hull front has an additional 0.375 inch (9.5 mm) thick steel applique plate, primarily intended to protect against mines.
A ballistic plate, also known as an armour plate, is a protective armoured plate inserted into a carrier or bulletproof vest, that can be used stand-alone, or in conjunction with other armour. "Hard armour" usually denotes armour that uses ballistic plates. It serves to defeat higher threats, and may be considered as a form of applique armour.
The smaller hard armour plates that were used with Enhanced Combat Body Armour [12] are inserted into side pockets (integral to Mk 1, Mk 2, Mk 3, and Mk 3A vests, integrated into cummerbunds issued with Mk 4 vest) or dedicated side pouches (Mk 4A vest) for additional lower torso protection, though they can also be used as an alternative to the ...