Armor steel plate

Pellets, slugs or flechettes made of U have very good powers of penetration. However, U is softer than steel so that in the process of penetrating an armored steel plate it is partially pulverized. Since in this form U is pyrophoric (self-igniting), such projectiles have an incendiary as well as a penetrating effect. According to one account of flechettes made of depleted U ... 

The DAVINCH is a double-walled steel chamber. The replaceable inner vessel is made of armor steel and the outer vessel is made of multilayered carbon steel plates with a corrosion- and stress-crack-resistant inner plate made of, for example, stainless steel, Hastalloy, or a similar material. The chambers are separated by air. Owing to its double-wall design and the materials of construction, the DAVINCH has the ability to confine high-pressure detonation gases, eliminating the need for an expansion tank to contain them following a detonation. 

Materials. Multilayer textiles developed for the air bs s used in the Mars Pathfinder and Exploration Rovers are being used in Warwick Mills puncture-and impact-resistant TurtleSkin product line of metal flex armor (MEA) vests, which are comparable to rigid steel plates but far more comfortable. 

We have virtually eliminated damage to steel targets, Powers says. That decreases the costs of operating a shooting range. Shoot houses can now be constructed from steel plate, as opposed to the expensive, heavy armored steel/rubber anti-ricochet panel/plywood construction, which is common in the industry. ... 

Nickel, used extensively to make coins and nickel steel for armor plates and burglar-proof vaults, and is also a component in Nichrome(R), Permalloy(R), and constantan. 

Special quality steels - A vast range of special quality steels is made in electric arc furnaces by adding other metals to form steel alloys. The most commonly known of these is stainless steel, which has chromium and nickel added to form a corrosion-resistant steel. There are very many others however the very hard steels used to make machine tools, the steels specially formulated to make them suitable for engineering, steels developed to survive for decades the hostile environment of nuclear reactors, light but strong steels used in aerospace, extra tough steels for armor plating - to name but a few. 

Panzergranate. Ger for a WWII projectile used against armor plate, or an AP (armor-piercing) projectile. According to Stettbacher (Ref), they were of one piece construction with a solid, sharp nose. They were effective against softer armor, but not against hardened steels Ref Stettbacher (1948), 401... 

The function of this fuze is to initiate, following a delay of 0.035 second after impact with steel armor plate, a high-order expln in the filler of projectiles from 6 to 16 inches in diam. The central axial assembly of the fuze, which is mounted on ball races, moves... 

Shells (loaded with Comp B) with these liners were tested by firing from the MIS rifle. These shells which rotated at about 210rpm, penetrated at least 3 inches in armor-plate in 96% of trials and 6 inches in 40% of trials. When fired at 120rpm in a spin-test app, the average penetration in mild steel was 7.4 indies. The standard 57mm M307A1 HEAT Shell which contains a hemispherical liner cannot be relied upon to penetrate 3 inches of armor plate... 

The knowledge and control of localized corrosion was also required to produce etched plates for the graphic artist with its intaglio lines. Prints made by the process first appear around 1500 AD, but there was a long prehistory in the decorative etching of metal surfaces, particularly those of steel arms and armor [279]. 

Dual hardness armor plate armor-soft steel and armor-aluminum ... 

This teat is conducted by placing the assembly vertically, at a known stand-off distance, above several layers of 0.5 inch thick armor-plate steel and detonating the charge. After detonation,the depth of hole, its average diameter at the top, and its volume are determined. Refs 1)TM 9—1910(1955),78—85 2)PATR 1740, Rev 1(1958) 3)Cook( 1958),226-64... 

The process consists of heating the fully machined part in an aimosphere rich in carbon monoxide or hydrocarbon gases at a temperature in the range I650-I800°F (899-982=C). Reactions at the surface of the rnetal liberate atomic carbon which is readily dissolved by the steel and diffuses inward from the surface. In a typical carburized case a depth of penetration of 0 05 inch (0.13 centimeter) was obtained in 4 hours at l701fF (927 C), The maximum carbon content at the surface was 1.10%. Shallow eases under 0 02 inch (0.05 centimeter) are useful for many purposes and very deep cases over 0.10 inch (0.25 centimeter) thick are required for gears lor heavy machinery and for armor plate. 

Tests by firing 20mm 37mm AP projs, prepd by the above method, against a 5cm thick chromium -nickel steel armor plate placed at a distance of 200 meters, showed that the av penetration was about 2/3 deeper than with an untreated standard AP proj... 

Penetration in Steel Armor Plate and Reinforced Concrete, inches... 

The Susan Sensitivity Test (Ref 7) is a projectile impact test with the projectile shown in Fig 1. The wt of expl in the projectile head is about 1 lb (0.45 kg). The target is armor-plate steel. The results of the tests are expressed in... 

Faraday (1791-1867) and the London cutler John Stodart. Six decades later, chromium steel was being made commercially in France for use in armor plating. By far the most important chromium alloy steel, however, was stainless steel, discovered in 1912 by the English inventor Harry Brearley (1871-1948). While trying to find a way of eliminating rust from gun barrels, Brearley accidentally discovered that the addition of a small amount of chromium to steel vastly improved its ability to resist oxidation. He gave the name rustless steel to his invention, although the product later became known as stainless steel. 

Armor-piercing (AP) ammunition has a projectile or projectile core constructed entirely from a combination of tungsten alloys, steel, iron, brass, bronze, beryllium copper, or depleted uranium. The most effective AP bullets are usually confined to rifle bullets, as velocity and range are important factors in AP requirements. Some revolver and pistol ammunition is described as metal piercing but, although it would be effective against vehicle bodywork and some body armor, it would be ineffective against heavy armor plate. AP bullets are, with very few exceptions, jacketed. 

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