Polishing High Performance WNiFe Tungsten Heavy Alloy Rod
WNiFe Tungsten Heavy Alloy Rod has high density, high strength High hardness (affectionately known as 3H alloy) and good comprehensive excellent properties such as ductility, conductivity and thermal conductivity play an important role in weapon manufacturing, and then have been widely used in national defense industry, aerospace and civil industry (such as electrical industry and drilling industry). High specific gravity tungsten alloy material has become a kind of military and civil alloy material.
SPECIFICATION & 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 |
WNiFe Tungsten Heavy Alloy Rod Picture:
Introduction and characteristics of WNiFe Tungsten Heavy Alloy Rod
The tungsten content in tungsten heavy 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 matrix to fix brittle tungsten particles together, making tungsten alloys ductile and easy to process. Ferronickel is the most commonly used additive in the proportion of 7Ni: 3Fe or 8ni: 2Fe (weight ratio).
Common processes for preparing tungsten heavy alloys include mixing the required amount of tungsten, iron, nickel or copper powder, and then cold pressing and liquid phase sintering to almost full density. In the process of liquid phase treatment, the matrix tungsten alloy melts, some tungsten is brought into the solution to form microstructure, and large tungsten particles (20 – 60 µ m) are dispersed in the matrix alloy through this microstructure.
Application of WNiFe Tungsten Heavy Alloy Rod
In the design and development of shelled armor piercing projectiles abroad, in order to increase the kinetic energy of the core and improve the armor piercing ability, the application of high specific gravity tungsten alloy is an effective technical measure. Foreign countries attach great importance to it. It began to be developed in the early 1970s and put into use in a short time. At present, in addition to the use of high specific gravity tungsten alloy core materials in the United States, many Western European countries also use them accordingly.
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