Tungsten Mechanical Cable

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Tungsten Cable for Surgical Robots

Tungsten Cable is Driving Today's Surgical Robotics Revolution and Sava's Producing it Right Now.

Tungsten, also commonly known as Wolfram (W), is among the strongest metals on earth, which is why it is commonly found in the motion control systems of today’s most sophisticated surgical robots. Because of tungsten’s superior tensile strength, the cable can withstand sometimes millions of cycles in the surgical robots within which they are found. Tungsten also has the highest melting temperature of all elements as well. Its tolerance of extreme heat therefore makes it the ideal mechanical cable material in applications such as those involving industrial furnaces.

The tungsten wires Carl Stahl Sava Industries uses to manufacture mechanical cable is available in bright or black as drawn surface finishes. The black as drawn finish is commonly used in surgical robotic mechanical cable assemblies, while the bright finish alternative is often found in semiconductor crystal growing furnaces, but as regularly is used in a host of other medical and surgical instruments too.

High-Quality Tungsten Wire & Cable for Surgical RobotsHigh-Quality Tungsten Wire & Cable for Surgical Robots

Common Tungsten Cable Applications

Surgical Robots: Tungsten Cable Manufacturing
Tungsten cable has shown tensile strengths a minimum of 20 percent greater than that found in equivalent diameter and construction 304 stainless steel mechanical cable.

Sava produces tungsten cables for the most demanding surgical robotics, medical devices and industrial applications and offers the latest tungsten cable constructions manufactured using the latest stranding technology available.

Tungsten mechanical cable has a wide variety of practical applications and today represents the go-to mechanical cable material used in the fast-growing surgical robotics industry. Sava works with some of the largest global makers of surgical robots and these elegant machines require Sava’s tungsten cables to actuate the sophisticated musculoskeletal movements for which these modern marvels are produced. As a matter of fact, the greater tensile strength achieved with tungsten cables can be packaged in smaller and smaller robotic components. By making smaller, yet stronger mechanical cable, the surgical robotics components such cables rely upon can be correspondingly smaller as well, helping make robotic appendages easier to manipulate through tight, often twisting and unforgiving cavities.

Likewise, medical devices for minimally-invasive surgery benefit from using tungsten wires and cables as well. One such application Sava builds tungsten cables for is an abdominal catheter stylet. In this fascinating application, the tungsten wire is straightened and cut to length, which becomes a subcomponent of the larger medical device.

Other Tungsten Cable Applications: Tungsten Cable Manufacturing

Another emergent market using tungsten mechanical cable more and more is those producing semiconductor crystals. Because of tungsten’s excellent thermal properties, it can be used in furnaces at 2,100 degrees Fahrenheit without annealing the wire rope. In this application, the crystal is grown in the high-temperature furnace and pulled over a protracted period to produce a finished, silicon ingot. Furnaces that reach over 2,000 degrees Fahrenheit cannot afford to have the cables they contain change strength and tolerance characteristics. Thus, stainless steel or other mechanical cable materials susceptible to quality changes where excessive heat is present are not suited to such harsh conditions.

Sava's Tungsten Cable Constructions

Sava manufactures a complete line of tungsten mechanical cable constructions to suit any motion control obligation. Browse our tungsten cable solutions® below and contact us to get started building your tungsten strand.


133 Wires, Anti-rotation, common in semiconductor Crystal Growing.


343 wires, is extremely flexible and common in surgical robots, semiconductor crystal growing.


201 Wires, 7x7 IWRC and is common in surgical robots.


259 Wires, is flexible and common in surgical robots.


361 Wires, is extremely flexible and common in surgical robots.


703 Wires, is extremely flexible and common in surgical robots