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This hardness allows tungsten carbide tools to cut almost all other materials with ease and allows for high-speed tooling. It lasts up to 100 times longer than steel and is right next to diamond in hardness. While being extremely difficult to work, forge, machine, turn, or deform once made, tungsten carbide will resist galling/scratches/erosion/corrosion as well as drastic changes in temperature. It is 2-3 times as rigid and dense as most steels and is currently one of our strongest engineering materials. It is the most important tungsten compound, composing 60% of all tungsten applications, and is sold under at least 5000+ different names and grades. It can be monotungsten carbide (WC) or a matrix of ditungsten carbide (W 2C), and each has its own unique properties based on composition and fabrication method. Tungsten carbide is not a true alloy, but a ceramic-like compound made by using the sintering process where carbon black is added to tungsten powder and shaped to produce an extremely hard and brittle cement once cooled. They are widely specified in oncology tools, electrical sensor shields, guidance system components, and military technology. The greatest advantage to tungsten nickel copper alloys is their non-magnetic nature this feature allows them to be used in applications where tungsten nickel iron alloys would be magnetically disruptive. They possess excellent thermal stability and can shield from radiation about as well as other tungsten alloys. They are great electrical conductors and are easy to machine despite their high mechanical strength. They are about as popular as nickel-iron alloys, but generally, have lower tensile strength (500-700 MPa) and ductility. The non-magnetic cousin to tungsten nickel iron alloys is the tungsten nickel copper alloys. Some notable applications include balance weights, security and defense applications, ballasts, bearing assemblies, and more. These alloys are perfect for radiation shielding, as its high density matched with its radiation resistance are ideal for protective components. Tungsten nickel iron alloys have a low expansion coefficient useful for glass-to-metal seals and possess high moduli of elasticity, which makes them resistant to elastic deformation. Iron makes these alloys magnetic, which is important to know if they are planned to be used in any magnetism-sensitive operations such as medical imaging equipment. They have 1.7 times the radiation shielding capabilities of lead and are non-toxic to biological systems (which cannot be said for lead). These alloys have good machining qualities and plasticity and can withstand intense temperatures, while still having a thermal conductivity that is 5 times that of die & punch steels. These metals have tensile strengths ranging from 600-1000 MPa, which surpasses most if not all other alloys. They are a silvery-grey color, have a range of densities from 16.85-19.3 g/cm 3, and are also known as Densalloy ®, Mallory, WNiFe, and/or Densimet ®. The most common of the tungsten alloys, tungsten nickel iron alloys are top of the list in terms of ductility, strength, and density. Regardless, this section will break down the popular types of tungsten alloys and in what applications they are often used. There is no true naming standard for these alloys, as they are set individually by the manufacturer and are not superimposable onto a general scheme such as with the alloys of steel or aluminum. Tungsten alloys, sometimes referred to as heavy alloys, are usually 90-97% tungsten with the rest of its composition being a matrix of metals which improve the ductility and machinability of the resulting alloy. The hope is that, by learning about the different grades of tungsten alloy available, buyers will have an easier time choosing the right tungsten alloy for their projects. We will investigate the main categories of tungsten alloys, their beneficial properties, and the applications for each type. Besides being a great alloying element, tungsten can also be the base for its own alloys, and this article will highlight the basic categories of these tungsten-based alloys. Tungsten provides a unique contribution, as it imbues exceptional strength, corrosion resistance, and other useful properties to base metals. Tungsten is an invaluable element in the alloying process, where elements are blended to form new and improved metals known as alloys. Tungsten is valuable as an alloying element to create improved metal alloys when added to base metals.