High-density Tungsten Heavy Metal Alloys are manufactured following the international standard of ASTM B777-15. These alloys are processed via powder metallurgy, where tungsten powder (90% to 97%) is mixed with Nickel, Copper, or Iron binders and then compressed. Through liquid sintering, the result is a series of four classes of high-density, machinable Tungsten Nickel Iron or Tungsten Nickel Copper Alloys, available in both magnetic and non-magnetic compositions.
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Alloyed with Ni & Fe, or Ni & Cu for Magnetic or Non-Magnetic Grades
Complex Parts or Components Can Be More Efficiently Produced
Environmentally Friendly & Lead-Free
High Density Range: 16.85 to 18.85 g/cc
Characteristics & Features
Tungsten heavy alloys possess the highest melting point of all metals and are suitable for extreme high-temperature applications. Key characteristics include:
Low coefficient of thermal expansion and high dimensional stability.
Homogeneous structure with no grain direction due to the liquid phase sintering process.
Excellent radiation shielding properties for X-Rays and Gamma Rays.
High Young’s Modulus and vibration-damping capabilities.
Wide Range of Applications
Typical applications include weights, ballast, balancing rotating systems for aerospace and race cars, boring bars, sinker bars, crank shafts, radiation shielding, medical imaging, high precision tools, darts, lead replacement, collimators, and oil and gas drilling equipment.
Technical Parameters
Alloy Type
WNiFe (ASTM B777, AMS-T-21014)
WNiCu (ASTM B777, AMS-T-21014)
Designation
90W
93W
95W
97W
90W
93W
95W
Density (g/cm3)
16.85-17.30
17.15-17.85
17.75-18.35
18.25-18.85
16.85-17.30
17.15-17.85
17.75-18.35
Tensile (MPa)
758 Min
758 Min
724 Min
689 Min
648 Min
648 Min
648 Min
Elongation (%)
5 Min
5 Min
3 Min
2 Min
2 Min
2 Min
1 Min
Hardness (HRC)
32 Max
33 Max
34 Max
35 Max
32 Max
33 Max
34 Max
Product Forms: Delivered as semi-finished for further processing or as finished products per customer drawings. These products are lead-free to protect the environment. Reliability: Shipped with internal Test Reports for physical and chemical properties. Delivery: 15-30 days production lead time based on specifications and quantity.
Frequently Asked Questions
1. What are the main benefits of using Tungsten Heavy Alloys?
They offer extremely high density (up to 18.85 g/cc), excellent radiation absorption, superior machinability compared to pure tungsten, and high mechanical strength.
2. Are these alloys magnetic?
We provide both magnetic (WNiFe) and non-magnetic (WNiCu) alloys. Non-magnetic versions have a maximum magnetic permeability of 1.05.
3. Which industry standards do your products follow?
Our tungsten alloys meet international standards such as ASTM B777-15, AMS-T-21014, and MIL-T-21014.
4. Can I get custom-shaped parts?
Yes, we specialize in producing complex parts and semi-finished components according to specific customer technical drawings.
5. Are these materials toxic or harmful to health?
No, these tungsten alloys are lead-free, non-toxic, and environmentally friendly, making them safe for various medical and industrial uses.
6. What is the typical lead time for production?
Standard production lead time is 15 to 30 days, depending on the complexity of the drawings and the order quantity.
Clyde Golf
