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tulammo.ru /en / Tula Cartridge Plant , also Tula Cartridge Works ( TCW ) ( Russian : Тульский патронный завод , Tul'skiy Patronnyj Zavod ) is a company based in Tula, Russia .
7.62×54mmR lead core, bi-metal copper-steel full metal jacket bullet, polymer-coated steel case, non-corrosive, berdan primed. Note: Around summer 2013, some lots of this cartridge caliber from Romania contained corrosive components , thus the firearm needed to be thoroughly cleaned after each firing session.
Gilding metal is a type of tombac which is one of the most common jacketing materials for full metal and hollow-point jacketed bullets. The 1980 Olympic 'Bronze' medals were actually tombac. During World War II, Canada minted 5-cent pieces in tombac in 1942 and 1943. The German military used it for some combat medals during World War II.
Erosion corrosion is a form of corrosion damage usually on a metal surface caused by turbulence of a liquid or solid containing liquid and the metal surface. [67] Aluminum can be particularly susceptible due to the fact that the aluminum oxide layer which affords corrosion protection to the underlying metal is eroded away. [68] [69]
An alkaline pH has been shown to have a beneficial effect on the corrosion resistance for steel. [6] The mechanism for copper begins the same as for steel, evolution of the inhibitor. Once at the copper surface however, the inhibitor will form a copper benzotriazole complex which is protective.
Metallurgical failure analysis is the process to determine the mechanism that has caused a metal component to fail.It can identify the cause of failure, providing insight into the root cause and potential solutions to prevent similar failures in the future, as well as culpability, which is important in legal cases. [1]
The 7.62×39mm (also called 7.62 Soviet, formerly .30 Russian Short) [5] round is a rimless bottlenecked intermediate cartridge of Soviet origin. The cartridge is widely used due to the global proliferation of the AK-47 rifle and related Kalashnikov-pattern rifles, the SKS semi-automatic rifle, and the RPD/RPK light machine guns.
Headquarters in Werdohl, Germany. VDM Metals Group (formerly Vereinigte Deutsche Metallwerke) based in Werdohl, Germany, is a manufacturer of corrosion-resistant, heat-resistant and high-temperature nickel alloys, cobalt and zirconium alloys as well as high-alloyed special stainless steels.