Tungsten alloys

Tungsten alloys constitute a vital group of materials within the industry due to their unique combination of properties. Tungsten, renowned for its exceptionally high melting point (3,422°C) and density, is often alloyed with other metals such as nickel, copper, or iron to enhance workability and mechanical performance. These alloys are extensively used in sectors such as aerospace, defense, power generation, and medical technology, where extreme temperatures, wear resistance, and high strength are required.

Thanks to their excellent thermal and electrical conductivity, combined with high corrosion resistance, tungsten alloys play a crucial role in jet engines, radiation shielding, and precision instruments, among others. The versatility of these alloys makes them indispensable in applications where conventional metals fall short. In this text, we delve deeper into the composition, properties, and applications of tungsten alloys, as well as the challenges and innovations within this material field.

Tungsten Specifications

W90NiFe/W90NiCu

W92.5NiFe/W92.5NiCu

W95NiFe/W95NiCu

W97NiFe

W90NiFeMo

 

Class 1

 Class 2 Class 3 Class 4 (non-standard)

Chemical Composition

Tungsten (W)

90

 92.5 95 97 90

Nickel (Ni)

 6 5.25 3.5 2.1 4

Iron (Fe) / Copper (Cu)

 4 2.25 1.5 0.9 2

Molybdenum (Mo)

–

–

–

–

4

Physical Properties

Density (g/cm3) 16.85-17.25 17.15-17.85 17.75-18.35 18.25-18.85 17.10-17.30
Thermal conductivity (W/m * K-1) 70/95 75/100 85/105 90/115 80
Coefficient of Thermal Expansion 5.8 5.5 5.2 5.0 5.3
Specific Electrical Resistivity 0.17/0.13 0.15/0.12 0.13/0.11 0.10/0.09 –
Physical Properties
E-modulus (GPa) 320-340 340-360 350-380 360-380 350
Tensile Strength (MPa) 750-1200 750-1400 720-1200 680-1000 700-1000
Yield Strength (MPa) 517 517 517 517
Elongation A (%) 5-30 5-25 3-15 2-10 2-15
Hardness (HRC) 24-32 25-33 25-34 30-35 24-32
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