Standard WNiFe WNiCu Machined Heavy Tungsten Alloy Screws
Heavy Tungsten Alloy Screws is a kind of tungsten as the matrix alloy material (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 is up to 15.20~18.70g/cm3, also known as high specific gravity tungsten alloy or high density alloy material. Because tungsten alloys weigh more than twice as much as steel.
SPECIFICATIONS & 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 |
Machined Heavy Tungsten Alloy Screws Picture:



What is Heavy Tungsten Alloy Screws?
- Heavy tungsten alloy is mainly divided into nickel nickel iron, nickel nickel alloy, nickel copper, even tungsten alloy two series. 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 national defense industry and has been gradually extended to various civil industries.
- The tungsten content in tungsten alloys varies from 90% to 98%, which is responsible for their high density (16.5 to 19.00g/CC). Nickel, iron and/or copper are used as a metal binder base to hold the fragile tungsten particles together, making the tungsten alloy malleable and easy to work. Ferric nickel Nickel is the most commonly used additive in 7Ni: 3Fi or 8Ni: 2Fe by weight
Application of Heavy Tungsten Alloy Screws
- High gravity tungsten alloys are used to make tool holders, especially boring bars.
- High gravity tungsten alloy is used as the counterweight material for the high crankshaft of the small engine of forest chainsaw.
- The electrodes of edM and electrochemical machine tools are also made of tungsten gold with high gravity