High Strength Polished Tungsten Heavy Alloy Blank 90WNiCuTungsten Heavy Alloy Blank is mainly divided into
tungsten nickel-iron, tungsten nickel-copper and even tungsten
nickel-iron copper. In contrast, West nickel-iron alloy has better
mechanical properties and plays an important role in the defense
industry and various sectors of the national economy. It is a very
important new military material in the national defense industry
and is gradually developing into various civil industries. Introduction & Features of Tungsten Heavy Alloy BlankHigh density: Tungsten alloys have a density of 18.5g/cm3 and are
much smaller than other materials of the same mass. Corrosion resistance: Tungsten alloys are chemically stable and
will not react with anything at room temperature. Fishing pendants
are used for prolonged exposure to water. If the material is iron,
it is easy to oxidize. High hardness: Tungsten alloy hardness is second only to diamond,
with considerable hardness. Fishing pendants inevitably collide
with hard objects during use. High hardness materials make the
spindles less prone to fracture and deformation.
SPECIFICATION & CHEMICAL COMPOSITION (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 |
Application of Tungsten Heavy Alloy BlankThe weight in the automatic watch uses the slight movement of the
arm and the inertia of the weight to drive the windings for
automatic winding. The heavier the hammer, the greater the inertial
energy, and the longer it takes to move. Therefore, hammerhead
materials need to have sufficient gravity, non-magnetic, moderate
strength and good corrosion resistance, and can be machined into
other precision parts. At present, some famous Brands of Swiss
automatic watches use this alloy, most of which are W-NICU alloy.
When using, the hammer should be plated with gold or nickel to
improve corrosion resistance and beauty. China has also adopted
high gravity tungsten alloy as a counterweight material for
automatic watches.
|
