The addition of copper and nickel makes this tungsten more corrosion resistant than tungsten carbide.

Made of 75% tungsten for wear and arc-erosion resistance and 25% copper for electrical and thermal conductivity, these work well for electrodes in the electrical-discharge machining of tungsten carbide and other dense material. They’re RWMA Class 11, so use them for facings and insets for flash and butt welding dies, projection welding electrodes, and seam welding. Compared to RWMA Class 10, they’re more wear resistant because they contain more tungsten. Also known as Elkonite.

This tungsten alloy is strong, corrosion resistant, and extremely dense. It’s dense enough to use as a lead alternative to shield from radiation, a vibration dampener in small spaces for equipment such as helicopter blades, and as crankshaft weights. Its density also means it won’t lose its shape under extreme conditions. Because this alloy has good tensile strength, it’s often used to protect electrical components in applications such as radiography. However, the high tungsten levels that give it good tensile strength also give it poor impact strength—it’s more brittle than similar alloys. This alloy won’t corrode when exposed to outside elements and chemicals. Containing nickel and iron, it’s easier to machine than pure tungsten and tungsten carbide. It won’t expand at high temperatures.

This high-density tungsten alloy is thermally conductive, so it quickly dissipates heat without deforming at high temperatures. Three to four times as thermally conductive as steel, it’s often formed into dies for short cycle times. Also known as Super Chatter Free tungsten, it’s commonly used as a boring bar to dampen vibration during machining, leading to a smoother finished product. This alloy contains molybdenum and nickel, making it easier to machine than pure tungsten and tungsten carbide. It won’t corrode when exposed to outside elements and chemicals.