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About Tungsten Heavy Alloy

Tungsten Heavy Alloy

MarShield Radiation Shielding are experts in the in the customization of tungsten heavy alloy for the Nuclear Energy, Nuclear Medicine / Radioisotope, diagnostic imaging and non-destructive testing industries.

Why Tungsten?

Tungsten Heavy Alloy has a density of up to 18.89 g/cm3 vs. lead at 11.34 g/cm3.  It’s ease of mechanical processing / machining, high ductility and strength makes it a viable option for many applications where lead is not feasible whether it be for size reduction, maximizing weight in large or small cavities or for radiation shielding. Tungsten Alloy is strong and highly customizable into precision components.


  • High Energy Radiation Shielding – Nuclear, Medical & Industrial
  • Counterbalance for Vibration Dampening
  • Aircraft control surfaces
  • Auto racing industry
  • Boring bars
  • Bucking Bars
  • Down hole logging-Sinker bars
  • Engine components
  • Fire arms
  • Golf club weights
  • Helicopter rotor Systems
  • Ship ballasts

Radiation Protection – Nuclear, Medical & NDT

  • Tungsten Heavy Alloy is an excellent material for shielding, guaranteeing that radiation exposure is kept to a minimum and ensuring that ALARA goals in the workplace. Machinability, radiographic density, strength, low toxicity, and heat resistance allow for superior design adaptability vs. other shielding materials. Tungsten Alloys are easily customizable.
  • Isotope vials and containers
  • Custom shielding components
  • Collimators for x-ray detectors
  • Multi-leaf collimators
  • Collimators for radiosurgery

Tungsten Heavy Alloy Ballast Weight

Tungsten Heavy Alloy allows for maximum weight is the smallest of places and is highly superior when it comes to dimensional stability, durability, density as well as low toxicity.

Aircraft and Marine Counterbalance Weights

Machinability to exact tolerances is why Tungsten Heavy Alloy is one of the preferred materials in the domain of aerospace for varied years as:

  • Counterbalance weight for rudders, ailerons
  • Helicopter blades and propellers
  • Radar equipment and avionics systems


Balancing weights on crankshafts, balance shafts on large diesel engines and other uses as damper weight and as absorber components in drive train are also popular due to tungsten heavy alloy’s high density, excellent mechanical processing characteristics, and high elasticity.

Down hole well logging weights and casings

Well logging is used in the gas and oil industry for the categorization of wells and positioning of down hole equipment. It is an outstanding casing material for down hole logging of gas and oil. Mechanical properties are noteworthy to the survivability of them rather large components.

Bucking Bars

Bucking bars of Tungsten Heavy Alloy are highly denser than steel, hence ensuring bucking bar of the similar weight but half of the size. They are used in setting of rivet to up the shank. They also reduce the recoil while reflecting the impact reverse to the shank of rivet.

Racing Weights in Formula 1 Race

It is used by specialized racing teams in a diversity of racing forums for fine-tuning the chassis and skid plates. It ensures 50% more weight of a given volume having the added advantages of straight attachment using threaded holes as well as the freedom from the deformation.

Boring Bars and Tooling

The combined high elastic (Young’s) modulus, high density and machine ability of the alloys make them perfect materials for boring bars as well as grinding quills with no chatter. High extension rations are achievable with high stiffness of the material. With high density, the range has become an effective inertial damping material of cutting with induced vibration. Grade HA170 or HA175 Tungsten alloy is most commonly used.

Sporting goods for golf clubs and firearms

Tungsten Heavy Alloy has maximum density that allows for the smallest component possible. Hence, it is used in golf clubs as well as tennis rackets that increases the spot size as well as adds to the stability while decreasing the vibration and shock for enhanced power and control. Balance fine tuning as well as inertial masses to move through the center of gravity.

Additional Applications

  • Homeland Defense
  • Personal protection devices for emergency responders
  • Clinical point shielding
  • Isotope production, containment and transport
  • Large container inspection device
  • Nuclear medicine and power plant shielding
  • Oncology Isotopic
  • Accelerator based platforms
  • Radiography
  • X-ray collimators as well as area shielding

Brochures | 3-Part CSI specifications

Brochures for Tungsten Heavy Alloy

Brochures for Tungsten Heavy Alloy
Preview Description Format Size Open
Information Sheets
Product Information Sheets
  40 kB Open
Production Technology
At Mars Metal our team of experienced designers, engineers, and trades people find innovative ways to...
  44 kB Open
Quality Assurance
Mars Metal is continuing to expand our ability to offer world leading products through an increased...
  45 kB Open
Lead Recycle Program
Mars Metal buys clean, heavy melt lead scrap. It might be overrun material from production work, sheet lead...
  39 kB Open

3-Part CSI specifications for Tungsten Heavy Alloy

3-Part CSI specifications for Tungsten Heavy Alloy
Description Format Size Download
Lead Material Safety Data
  39 kB Download
Lead Shot MSDS
Lead Shot Material Safety Data
  39 kB Download

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News archive:
Tungsten Heavy Alloy from MarsMetal (Jun 13, 2022)

05 - Metals
05 45 13 - Mechanical Metal Supports
05 59 00 - Metal Specialties
07 15 13 - Sheet Lead Waterproofing
08 34 46 - Radio-Frequency-Interference Shielding Doors
08 34 49 - Radiation Shielding Doors and Frames
08 34 49.13 - Neutron Shielding Doors and Frames
09 91 00 - Painting
12 57 16 - Welding Screens
13 49 13 - Integrated X-Ray Shielding Assemblies
13 49 16 - Modular X-Ray Shielding Rooms
13 49 19 - Lead-Lined Materials
13 49 23 - Integrated RFI/EMI Shielding Assemblies
13 49 26 - Modular RFI/EMI Shielding Rooms
14 28 19 - Elevator Equipment
14 28 19.13 - Elevator Safety Equipment
23 33 13 - Dampers
31 75 00 - Shaft Construction
34 82 00 - Bridge Specialties
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41 35 33 - Molds
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