WNiCu Tungsten Alloy Electrodes ASTM B777 High HardnessTungsten Alloy Electrodes are tungsten based alloy materials
(tungsten content is generally 80% - 98%) and a small amount of
nickel, iron, copper, cobalt, molybdenum, chromium and other
elements. The density of high specific gravity tungsten alloy can
reach 15.20~18.70g/cm3, which is also called high specific gravity
tungsten alloy or high density alloy material. Because the weight
of tungsten alloy is more than twice that of steel. What is Tungsten Alloy Electrodes?Heavy tungsten alloys are mainly divided into two series: nickel
iron, nickel nickel, nickel copper, and even tungsten. In contrast,
o-ni-fe alloy has good mechanical properties and plays an important
role in various fields of national defense industry and national
economy. It is a very important new military material in the
national defense industry, and has gradually expanded to various
civil industries. The tungsten content of 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 binder substrates to
fix fragile tungsten particles together, making tungsten alloys
ductile and easy to use. Iron nickel nickel is the most commonly
used additive, and its ratio is 7ni:3fe or 8ni:2fe (by weight).
Tungsten Alloy Electrodes CHEMICAL COMPOSITIONS (NOMINAL)| 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 |
Application of Tungsten Alloy ElectrodesTungsten alloys with high specific gravity are used to make tool
shanks, especially boring bars. Tungsten alloy with high specific gravity is used as counterweight
material for high crankshaft of small chain saw engine. The electrodes of EDM and electrochemical machine tools are also
made of high specific gravity tungsten.
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