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Linear Formula: | W-Ni-Fe |
Material: | W-90% Ni-7% Fe-3% W-92.5% Ni-5.25% Fe-2.25% W-95% Ni-3.5% Fe-1.5% W-97% Ni-2.1% Fe-0.9% |
Standard: | ASTM B777, MIL-T-21014 |
Shape: | Rod, Ball, Plate, and other shapes per requirements |
Size: | Customize |
Tungsten Nickel Iron Alloy Description
Tungsten nickel iron contains 1% to 3% of iron and 1% to 7% of nickel composited at ratios ranging from FeNi 1:1 to 1:4. The 1% to 3 % of iron additive is responsible for significant differences in tungsten alloys containing nickel iron exhibit, comparing tungsten alloys containing nickel copper. First, tungsten nickel iron is ferromagnetic material because of the iron. Iron imparts other special attributes to tungsten nickel iron, such as its comparatively higher density, melting point, ductility, and strength. By virtue of these excellent properties, tungsten nickel iron alloys have better high-temperature strength and higher cold-work deformation rate than tungsten nickel copper. All these allow it to be used in many industries including sports, medicine, etc. Tungsten nickel iron is a high-density alloy suitable for high-temperature environments and applications such as bearing assembly, ballast, casting, step soldering, and radiation shielding.
Tungsten nickel iron alloys are available in numerous machined shapes such as bar, ingot, ribbon, wire, shot, sheet, and foil, in various dimensions. We can also produce materials to custom specifications by request.
Specification for Tungsten Nickel Iron Alloy
ASTM B777-15 | Magnetic | Magnetic | Magnetic | Magnetic |
AMS 7725E | Type 2 | Type 2 | Type 2 | Type 2 |
MIL-T-21014 Rev D | Class 1 | Class 2 | Class 3 | Class 4 |
SAE-AMS-T-21014 | Class 1 | Class 2 | Class 3 | Class 4 |
Tungsten (wt%) | 90 | 92.5 | 95 | 97 |
Binder | Ni/Fe | Ni/Fe | Ni/Fe | Ni/Fe |
g/cm3 | 17.10 | 17.50 | 18.10 | 18.50 |
lb/in3 | 0.62 | 0.63 | 0.65 | 0.67 |
Hardness, HRC | 27 | 24 | 24 | 25 |
Mpa | 645 | 645 | 660 | 660 |
ksi | 95 | 95 | 95 | 95 |
Mpa | 875 | 900 | 910 | 915 |
ksi | 126 | 130 | 131 | 132 |
Physical and Mechanical Properties of Tungsten Nickel Iron Alloy
Alloy Type (wt%) | 90W-7Ni-3Fe | 93W-5Ni-2Fe | 95W-3.5Ni-1.5Fe | 97W-2.1Ni-0.9Fe |
MIL-T-21014 | Class 1 | -- | Class 3 | Class 4 |
SAE-AMS-T-21014 | Class 1 | -- | Class 3 | Class 4 |
ASTM B777-87 | Class 1 | -- | Class 3 | Class 4 |
Typical Density | 17.1 | 17.6 | 18 | 18.5 |
Typical Hardness RC | 25 | 26 | 27 | 28 |
Yield Strength Min | 650~850 | 650~850 | 600~750 | 620~670 |
Elongation % | 20~25 | 15~20 | 8~13 | 2~5 |
Dimensions of Shaped W-Ni-Fe Alloy Products
Product | Length (mm) | Width (mm) | Thickness (mm) | Diameter (mm) |
W alloy rod | 2 ~ 600 | --- | --- | 2 ~ 320 |
W alloy ball | --- | --- | --- | 1.5 ~ 200 |
W alloy plate | 10 ~ 600 | 10 ~ 300 | 2 ~ 200 | --- |
Other types | Cube, ring, block and other customized shaped products | |||
Tungsten Nickel Iron Alloy Applications and Related Industries
● Counterweight
● Bucking bar
● Balance hammer
● Gyroscope rotor
● Guide
● Shock absorber
● Die-casting mold
● Tool holder, boring bar
● Automatic watch hammer
● Conventional weapons with armor-piercing missile
● Electric products with riveting head and switch contacts
● Anti-ray shielding components
● Research & Laboratory
● Material
● Aerospace
● Military
Chemical Identifiers
Linear Formula | W-Ni-Fe |
MDL Number | N/A |
EC No. | N/A |
Pubchem CID | 57448909 |
IUPAC Name | iron; nickel; tungsten |
SMILES | [Fe].[Ni].[W] |
InchI Identifier | InChI=1S/Fe.Ni.W |
InchI Key | OWUGOENUEKACGV-UHFFFAOYSA-N |
Tungsten Nickel Iron Alloy Properties (Theoretical)
Compound Formula | WNiFe |
Appearance | Silvery-gray metallic solid in various forms (wire, sheet, rod, bar, powder) |
Melting Point | N/A |
Boiling Point | N/A |
Density | 16.85-19.3 g/cm3 |
Solubility in H2O | N/A |
Electrical Resistivity | 9 x 10-6 ω·cm |
Poisson's Ratio | 0.21-0.24 |
Tensile Strength | 680-785 MPa |
Thermal Conductivity | .18-.30 CGS Units |
Thermal Expansion | 4.0 µm/m·°C (linear) |
Vickers Hardness | 255-360 |
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