High Performance Density 90WNiFe Heavy Tungsten Alloy Wire
Heavy Tungsten Alloy Wire has high hardness (also known as 3H
alloy) and comprehensive excellent properties such as good
ductility, electrical conductivity, and thermal conductivity play
an important role in weapon manufacturing and are widely used in
the defense industry. Aerospace and civil industries (such as
electrical, drilling and other industries). High specific gravity
tungsten alloy has become a military and civilian alloy material.
SPECIFICATION & CHEMICAL COMPOSITIONS (NOMINALS)
| Chemical Composition | 90%W | 93%W | 95%W | 97%W |
| State | Sinter | Vacuum | Forge | Sinter | Vacuum | Forge | Sinter | Vacuum | Sinter | Vacuum |
Density
(g/cc) | 16.85-17.25 | 17.15-17.85 | 17.75-18.35 | 18.25- 18.85 |
Hardness
(HRC) | 32 Max | 30 Max | 40 Min | 33 Max | 31 Max | 40 Min | 34 Max | 32 Max | 35 Max | 33 Max |
| Tensile Strength (Max) | 770 Min | 900 Min | 1400
Max | 770 Min | 910 Min | 1440 Max | 735 Min | 920 Min | 700 Min | 850 Min |
Yield Strength
(Mpa) | 620 Min | 620 Min | 1280 Max | 650 Min | 650 Min | 1340 Max | 650 Min | 650 Min | - | - |
Elongation
(%) | 5 Min | 15 Min | 5 Min | 5 Min | 12 Min | 3 Min | 3 Min | 12 Min | 2 Min | 6 Min |
Heavy Tungsten Alloy Wire Picture:
Introduction and characteristics of Tungsten Alloy Wire
The tungsten content of heavy tungsten alloys ranges from 90% to
98%, which is the reason for their high density (16.5 to
19.00g/CC). Nickel, iron and/or copper are used as metal adhesive
substrates to hold fragile tungsten particles together, making the
tungsten alloy ductile and easy to work. Nickel-iron is the most
commonly used additive, with a ratio of 7Ni:3Fe or 8Ni :2Fe (weight
ratio).
The usual process for preparing heavy tungsten alloys involves
mixing the desired amount of tungsten, iron, nickel or copper
powder and then cold pressing and liquid phase sintering to almost
full density. During the liquid phase treatment, a certain amount
of tungsten is added into the tungsten alloy melt to form
microstructure, through which larger tungsten particles (20-60 μm)
are dispersed in the matrix alloy.
Application of Tungsten Alloy Wire
In order to increase the kinetic energy of projectile core and
enhance the ability of piercing armor, the application of high
specific gravity tungsten alloy is a successful technical measure
in the design and development of shell piercing projectile abroad.
At present, in addition to the United States, many countries in
Western Europe have adopted tungsten alloy projectile core
materials.
