95WNiFe High temperature Resistance Tungsten Heavy Alloy Dies Tungsten Heavy Alloy Dies are 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-Ni-Fe,
W-Ni-Cu, and even W-Ni-Cu-Fe complexes. Rare earth/other metals
such as cobalt, molybdenum and chromium are added to some tungsten
alloys. Heavy tungsten alloys have a high melting point, are twice
as dense as steel and more than 50 percent heavier than lead. Tungsten Heavy Alloy Dies 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 Heavy Alloy Dies?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 the defense industry and various areas of
the national economy. It is a very important new military material
in national defense industry, and is gradually developing into
various civilian industries. Heavy duty tungsten alloys contain 90-98% high density tungsten
(16.5-19.00g/CC). Nickel, iron and/or copper are used as metal
adhesive substrates to hold the brittle tungsten particles
together, making the tungsten alloy strong and easy to use. Fe-ni
is the most commonly used additive, with a weight ratio of 7Ni: 3Fe
or 8Ni: 2F
Application of Tungsten Heavy Alloy DiesDie casting is a low-chip, chip-free precision casting process that
can directly manufacture parts of complex shapes. Single process,
high yield, no pores, saving raw materials, especially in iron
metal die casting, the working conditions of the mold are very
harsh, it must be resistant to high temperature, high pressure and
metal flow corrosion, and can withstand corrosion, oxidation and
thermal shock. High specific gravity tungsten alloy has good
thermal conductivity and corrosion resistance, and is a good die
casting material. Compared with the copper mold, its service life
is increased by dozens of times.
|
