High Density Tungsten Heavy Alloy Plate WNiCu ASTM B777
Tungsten Heavy Alloy Plate is also called tungsten heavy alloy
because the weight of tungsten alloy is more than twice that of
iron or steel. Tungsten alloys with high specific gravity are
usually refractory metals with two-phase composites composed of
W-Ni-Fe or W-Ni-Cu or even W-Ni-Cu-Fe. Some tungsten alloys add
rare earths and/or other metals such as Co. , Mo, Cr, tungsten
heavy alloys have a very high melting point, the density is twice
that of steel, and more than 50% heavier than lead.
SPECIFICATIONS & 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 |
Tungsten Heavy Alloy Plate Picture:
Introduction and characteristics of Tungsten Heavy Alloy Plate
The tungsten content in tungsten heavy alloys varies from 90% to
98%, which is responsible for their high density (16.5 to
19.00g/cc). Nickel, iron and/or copper are used as a metal binder
base to hold the brittle tungsten particles together, making the
tungsten alloy malleable and easy to work. Nickel-iron is the most
commonly used additive, with a ratio of 7Ni:3Fe or 8Ni:2Fe (weight
ratio).
Common processes for preparing tungsten heavy alloys include 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, the matrix tungsten
alloy melts and brings some tungsten into the solution to form a
microstructure through which large tungsten particles (20 -- 60μm)
are dispersed in the matrix alloy.
Application of Tungsten Heavy Alloy Plate
- The thermoelectric generator is a kind of fusion energy generating
equipment that uses radioisotopes. It can use high-density tungsten
alloy as a container. It has been widely used in weather stations,
light buoys, sound telecommunication beacons, oceanographic
research, etc.
