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Although molybdenum-rich high-speed steels such as AISI M1 had seen some use since the 1930s, it was the material shortages and high costs caused by WWII that spurred development of less expensive alloys substituting molybdenum for tungsten. The advances in molybdenum-based high speed steel during this period put them on par with, and in ...
A variety of blade materials can be used to make the blade of a knife or other simple edged hand tool or weapon, such as a sickle, hatchet, or sword. The most common blade materials are carbon steel, stainless steel, tool steel, and alloy steel. Less common materials in blades include cobalt and titanium alloys, ceramic, obsidian, and plastic.
Technically known as putties, but more commonly Plastic explosives, these mixtures are a thick, flexible, moldable solid material that can be shaped and will retain that shape after forming, much like clay. Putties normally contain mostly RDX explosive, but may include some PETN (Semtex, for example). Some common putties are: C4
Other materials are often added to the iron/carbon mixture to produce steel with the desired properties. Nickel and manganese in steel add to its tensile strength and make the austenite form of the iron-carbon solution more stable, chromium increases hardness and melting temperature, and vanadium also increases hardness while making it less ...
These firecrackers most commonly have a small capsule with up to 50 milligrams of powder (30 milligrams is most common), in contrast with the 5200 milligrams (5.2 g) that real M-80s contain, and a fuse in it. Surrounding the capsule is plaster or a similar material, and finally a red tube and two plastic endcaps.
A material property is an intensive property of a material, i.e., a physical property or chemical property that does not depend on the amount of the material. These quantitative properties may be used as a metric by which the benefits of one material versus another can be compared, thereby aiding in materials selection.
Drugs, weapons and human trafficking. That's probably what comes to mind when thinking about the black market -- but the illegal trade is more varied than you may think, and it also encompasses ...
Material selection is often benefited by the use of material index or performance index relevant to the desired material properties. [2] For example, a thermal blanket must have poor thermal conductivity in order to minimize heat transfer for a given temperature difference. It is essential that a designer should have a thorough knowledge of the ...