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Titanium alone is a strong, light metal. It is stronger than common, low-carbon steels, but 45% lighter. It is also twice as strong as weak aluminium alloys but only 60% heavier. Titanium has outstanding corrosion resistance to seawater, and thus is used in propeller shafts, rigging and other parts of boats that are exposed to seawater.
Titanium may be anodized to vary the thickness of the surface oxide layer, causing optical interference fringes and a variety of bright colors. [124] With this coloration and chemical inertness, titanium is a popular metal for body piercing. [125] Titanium has a minor use in dedicated non-circulating coins and medals.
Tungsten occurs in many alloys, which have numerous applications, including incandescent light bulb filaments, X-ray tubes, electrodes in gas tungsten arc welding, superalloys, and radiation shielding. Tungsten's hardness and high density make it suitable for military applications in penetrating projectiles.
Tungsten (W) Adds strength, and toughness, and improves hardenability. Retains hardness at elevated temperature. Improves corrosion and heat resistance. Titanium (Ti) increases strength, toughness, heat, and corrosion resistance plus reduces weight. increases hardness and wear resistance of nitrogen or carbon at the surface of the alloy ...
For the production of the tungsten heavy alloy, binder mixtures of nickel and iron or nickel and copper are widely used. The tungsten content of the alloy is normally above 90%. The diffusion of the binder elements into the tungsten grains is low even at the sintering temperatures and therefore the interior of the grains are pure tungsten. [18]
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Inconel 686 (chromium, molybdenum, tungsten) Invar; Monel metal (copper, iron, manganese) Nichrome ; Nickel-carbon ; Nicrosil (chromium, silicon, magnesium) Nimonic (chromium, cobalt, titanium), used in jet engine turbine blades; Nisil ; Nitinol (titanium, shape memory alloy) Magnetically "soft" alloys Mu-metal ; Permalloy (iron, molybdenum)