Corrosion Resistant High Hardness 90WNiFe Tungsten Alloy Drilling
Bit Tungsten Alloy Drilling Bit is heavy duty tungsten screws because
they weigh more than twice as much as steel. High specific gravity
tungsten alloys are usually refractory metals containing w nickel
iron, w nickel copper or even w nickel copper iron complexes. Rare
earths are added to some tungsten alloys and / or other metals such
as cobalt, molybdenum and chromium. Heavy tungsten alloy has a high
melting point, twice the density of steel and more than 50% heavier
than lead. Tungsten Alloy Drilling Bit SPECIFICATIONS :| 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 |
What is Tungsten Alloy Drilling Bit?Heavy tungsten alloys are mainly divided into W nickel-iron, W
nickel-copper, and even W nickel-iron copper series. In contrast,
western nickel-iron alloys have better mechanical properties and
play an important role in various fields of the national defense
industry and the national economy. It is a very important new
military material in the national defense industry and is gradually
developing to various civil industries. The heavy tungsten alloy contains 90-98% tungsten and has a high
density (16.5-19.00 g / CC). Nickel, iron, and / or copper are used
as metal binder substrates to bond fragile tungsten particles
together, making tungsten alloys tough and easy to use. Iron nickel
is the most commonly used additive, and its ratio is 7Ni: 3Fe or
8ni: 2Fe (calculated by weight).
Application of Tungsten Alloy Drilling BitIt is used as a shielding element for a dual source distance
densitometer. The instrument is used to measure the oil content of
layers several kilometers below the surface. After transforming the
original lead shield element into high specific gravity tungsten
alloy, it has been widely used with small volume, high precision
and long service life.
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