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MIL-DTL-46177 is an older, now-replaced standard for a high hardness steel RHA. [4] It specifies a harder steel that is nearly identical to AR500 in terms of tensile and yield strength. [5] The Brinell hardness of AR500 is in the 477-534 range. MIL-DTL-46100E specifies a steel of identical hardness. [3]
Bronze muscle cuirass, Italy, c. 350–300 BC. Partial plate armour, made out of bronze, which protected the chest and the lower limbs, was used by the ancient Greeks, as early as the late Bronze Age. The Dendra panoply protected the entire torso on both sides and included shoulder and neck protections.
Lamellar armour is a type of body armour made from small rectangular plates (scales or lamellae) of iron, steel, leather , bone, or bronze laced into horizontal rows. Lamellar armour was used over a wide range of time periods in Central Asia , Eastern Asia (especially in China , Japan , Korea , Mongolia , and Tibet ), Western Asia , and Eastern ...
The materials that make up naval armour have evolved over time, beginning with simply wood, then softer metals like lead or bronze, to harder metals such as iron, and finally steel and composites. Iron armour saw wide use in the 1860s and 1870s, but steel armor began to take over because it was stronger, and thus less could be used.
Bronze, or bronze-like alloys and mixtures, were used for coins over a longer period. Bronze was especially suitable for use in boat and ship fittings prior to the wide employment of stainless steel owing to its combination of toughness and resistance to salt water corrosion. Bronze is still commonly used in ship propellers and submerged bearings.
Mail's resistance to weapons is determined by four factors: linkage type (riveted, butted, or welded), material used (iron versus bronze or steel), weave density (a tighter weave needs a thinner weapon to surpass), and ring thickness (generally ranging from 1.0 to 1.6 mm diameter (18 to 14 gauge) wire in most examples). Mail, if a warrior could ...
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]
Krupp armour was a type of steel naval armour used in the construction of capital ships starting shortly before the end of the nineteenth century. It was developed by Germany's Krupp Arms Works in 1893 and quickly replaced Harvey armour as the primary method of protecting naval ships, before itself being supplanted by the improved Krupp ...