W - Ni - Fe Tungsten Cube 2.8, 3.2 mm with Tensile Strength 920 -
Tungsten heavy alloys which can also be called high gravity alloys
are refractory metals, it is a kind of alloy using tungsten as
matrix and components nickel, iron, copper and other alloying
elements. Basically there are two series, W-Ni-Fe and W-Ni-Cu,
sometimes even W-Ni-Cu-Fe.
Our tungsten alloy cube are produced by powder metal and sintering
processes.Tungsten is the world's 4th heaviest metal.Tungsten heavy
alloy contains mainly tungsten ranging from 80wt% to 98wt%, and its
density can reach 15.8~18.5g/cm3. Nickel, iron, copper serve as
binder between tungsten grains and make the material ductile and
more machinable. Compared to W-Ni-Cu, W-Ni-Fe possesses a better
mechanical property, being widely used in national defense
Tungsten heavy alloys have many special properties such as high
density (15.8-18.5g/cm3), high melting point, wear resistance, high
tensile strength, good elongation capacity, low vapor pressure,
excellent thermal stability and high radiation absorption capacity,
etc., so due to these advantages they are widely used in various
fields including the military, sports, aerospace, aviation, oil
drilling, electrical instrumentation and medical industries.
Our processing route for tungsten heavy alloys is show in Figure 1.
Firstly, mix the calculated amount of elemental powders according
to certain ratio, ball milling to even all powders and refine
powder grains. Then, employ cold pressing and liquid phase
sintering to almost full density. The matrix alloy melts and some
tungsten dissolves into solution during liquid phase processing,
resulting in a microstructure through which large tungsten grains
(20–60µm) are dispersed in the matrix alloy. The as-sintered
material often is subjected to certain aging treatments, finally
leading to improved strength and hardness in the heavy alloys.
1. AMS Specifications
Tensile Strength (MPa)
2. Our General Sizes (Customization accepted)
2.8 x 2.8 x 2.8 mm
3.2 x 3.2x 3.2 mm
W: 94% min , Ni:4% , Fe:2%
W: 94% min , Ni:4% , Fe:2%
0.40g (± 0.02g)
≥ 17.95 g/cm3
Tungsten heavy alloy has a series of excellent physical, chemical
and mechanical properties, so it is widely used for the balance
weight and military industry.
Advantages of tungsten heavy alloy:
The most outstanding property of heavy metal alloys is the high
density, which is far higher than nickel, titanium and lead alloys.
It is employed to be a substitute for those alloys, not only
because of its superior physical properties mentioned above, but a
low expansion coefficient and high modulus of elasticity. Its ray
absorption capability is 30~40% higher than lead, the thermal
conductivity is five times than die steel.