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W-Ni-Fe Series
Material Type
Metal
Material Name
W-Ni-Fe Series (ASTM)
Alternative Names
WM0125
Process Compatibility
CNC Milling, CNC Turning
introduction
W-Ni-Fe Series (ASTM) in CNC Machining
CNC machining of tungsten-heavy alloys, such as the W-Ni-Fe series, needs careful consideration due to the hardness and density of these materials.
When machining these alloys, we use specialized tools, including hardened cutters made of carbide or other durable materials. Coatings like TiAlN can enhance tool performance. We use low cutting speeds, around 50-150 SFM, and controlled feed rates to prevent excessive tool wear. Coolants aid in heat dissipation during machining.
CNC turning and milling are common techniques, with constant tool engagement to maintain stability. Post-machining processes, including deburring, may be necessary. We check regularly to ensure the machined components meet the required tolerances.
Properties
Properties Table of W-Ni-Fe Series (ASTM)
| MECHANICAL PROPERTIES | W90Ni7Fe3 | W95Ni3Fe2 | W97Ni2Fe1 |
|---|---|---|---|
| Hardness;Rockwell C | 25 | 25 | 25 |
| Ultimate Tensile Strength; PSI | 110,000 | 105,000 | 100,000 |
| Yield Strength,0.2% Offset;PSI | 75,000 | 75,000 | 75,000 |
| Elongation,% in 1'' | 5+ | 3+ | 2+ |
| Proportional Elastic Limit; PSI | 52,000 | 44,000 | 45,000 |
| Modulus of Elasticity; PSI | 45 x 10^6 | 50 x 10^6 | 53 x 10^6 |
| Physical Properties | W90Ni7Fe3 | W95Ni3Fe2 | W97Ni2Fe1 |
| Density(g/cc) | 17 | 18 | 18.5 |
| Density(lbs/in^3) | 0.614 | 0.65 | 0.668 |
| Mil.Spec.T-21014 D | Class 1 | Class 3 | Class 4 |
| ASTM-B777 | Grade 1 | Grade 3 | Grade 4 |
| Type | Type II & III | Type II & III | Type II & III |
| Magnetism | Slightly Magnetic | Slightly Magnetic | Slightly Magnetic |
| Thermal Properties | W90Ni7Fe3 | W95Ni3Fe2 | W97Ni2Fe1 |
| Coefficient of Thermal Expansion(x 10^-6°C,20°-400°C） | 4.8 | 4.6 | 4.5 |
| Thermal Conductivity(CGS Units) | 0.18 | 0.26 | 0.3 |
| Electrical Properties | W90Ni7Fe3 | W95Ni3Fe2 | W97Ni2Fe1 |
| Electrical Conductivity(%IACS) | 10 | 13 | 17 |
TECHNOLOGY OVERVIEW
Basic Knowledge of W-Ni-Fe Series (ASTM)
What is W-Ni-Fe Series (ASTM)?
The W-Ni-Fe series are composed of tungsten heavy alloys with varying compositions, characterized by the weight percentages of tungsten (W), nickel (Ni), and iron (Fe).
In W90Ni7Fe3, 90% is tungsten, 7% is nickel, and 3% is iron. W95Ni3Fe2 consists of 95% tungsten, 3% nickel, and 2% iron, while W97Ni2Fe1 has 97% tungsten, 2% nickel, and 1% iron.
Tungsten is a refractory metal with a high density and melting point. It contributes to the density of the alloy and provides mechanical strength.
Nickel is added to improve the ductility and toughness of the alloy. It also enhances machinability and helps achieve a more uniform structure.
Iron is another alloying element that contributes to the material's overall properties. It can influence the mechanical and thermal properties of the alloy.
Advantages of W-Ni-Fe Series (ASTM)
High density
Excellent magnetic properties
Superior wear resistance
Good thermal conductivity
High tensile strength
Corrosion resistance
Precision machining capabilities
Applications of W-Ni-Fe Series (ASTM)
Aerospace components
Electrical contacts
Medical devices
Nuclear reactor components
Oil and gas drilling equipment
High-performance tools and dies
Missile components
High-temperature furnace parts
Automotive components
Electronic packaging materials
FAQ
Machining W-Ni-Fe Series (ASTM) Buying FAQ
Common uses include radiation shielding in medical equipment and nuclear applications, counterweights in aerospace and defense systems, and weights in sporting equipment such as golf clubs or fishing weights. Additionally, W90Ni7Fe3 is also used in industrial tools, electronics, oil and gas exploration tools, and even in components for astronomy and space exploration.
W-Ni-Fe tungsten alloys can be welded using techniques like TIG welding or laser welding, but due to their high melting point and potential brittleness, careful parameter control is required.
The W-Ni-Fe series, tungsten heavy alloys, are not lightweight. Comprising tungsten, nickel, and iron, they are materials with high density, good mechanical strength, and radiation shielding properties.
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