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W-Ni-Cu Series
Material Type
Metal
Material Name
W-Ni-Cu Series (ASTM)
Alternative Names
WM0126
Process Compatibility
CNC Milling, CNC Turning
introduction
W-Ni-Cu Series (ASTM) in CNC Machining
The W-Ni-Cu series, also known as tungsten heavy alloys (WHAs), is a group of materials composed mainly of tungsten (W), with nickel (Ni) and copper (Cu) making up the rest.
These alloys are valued for their high density. CNC machining of W-Ni-Cu alloys is possible but requires specialized tools due to tungsten's hardness. Machinability is improved with the addition of nickel and copper. Carbide or diamond tools are commonly used, and cutting speeds must be reduced to avoid tool wear. The use of coolant is essential to dissipate heat during machining.
Achieving a smooth surface finish may require post-machining processes like grinding or polishing. DEK strictly follows safety precautions when machining due to the potential hazards of tungsten dust. Specific machining parameters depend on the alloy's composition.
Properties
Properties Table of W-Ni-Cu Series (ASTM)
| MECHANICAL PROPERTIES | 90W-6Ni-4Cu | 93W-4Ni-3Cu | 95W-3.5Ni-1.5Cu |
|---|---|---|---|
| Typical Density(g/cc) | 17 | 17.6 | 18 |
| Typical Hardness RC | 24 | 26 | 27 |
| Yield Strength Min(MPa) | 550~750 | 550~770 | 500~700 |
| Elongation(%) | 8~15 | 5~10 | 3~5 |
| Physical Properties | |||
| Corrosion Resistance | Wear Resistance | ||
| Magnetism | Non-Magnetic | ||
| Thermal Properties | |||
| Maximum Service Temperature | High Melting Point | ||
| Thermal Conductivity | Excellent Thermal Stability |
TECHNOLOGY OVERVIEW
Basic Knowledge of W-Ni-Cu Series(ASTM)
What is W-Ni-Cu Series (ASTM)?
The W-Ni-Cu series refers to tungsten heavy alloys that consist of tungsten (W), nickel (Ni), and copper (Cu). These alloys are known for their high density, excellent radiation shielding properties, and good mechanical strength. The ASTM (American Society for Testing and Materials) specifications provide standards for these materials to ensure their quality and performance in various applications.
W90Ni6Cu4, W93Ni4Cu3, and W95Ni3.5Cu1.5 are from the W-Ni-Cu series. W90Ni6Cu4 means that the alloy is composed of 90% tungsten, 6% nickel, and 4% copper by weight. W93Ni4Cu3 is 93% tungsten, 4% nickel, and 3% copper by weight, and then W95Ni3.5Cu1.5 is 95% tungsten, 3.5% nickel, and 1.5% copper by weight.
Advantages of W-Ni-Cu Series (ASTM)
High density
Excellent thermal conductivity
Superior wear resistance
Good machinability
Resistance to corrosion
High strength at elevated temperatures
Capability for intricate shapes
Effective for radiation shielding
Ductile and formable
Reliable mechanical properties
Applications of W-Ni-Cu Series (ASTM)
Aerospace components
Electrical contacts
High-temperature furnace components
Heavy-duty electrical switches
Plasma-facing components in fusion reactors
Medical devices
Oil and gas drilling equipment
Electronic packaging
Automotive components
Microwave devices
FAQ
MachiningW-Ni-Cu Series (ASTM) Buying FAQs
Tungsten materials are challenging to weld using traditional methods. However, specialized processes such as inert gas tungsten arc welding (TIG welding) or laser welding can be employed to join them.
Laser cutting is not recommended for tungsten W-Ni-Cu Series due to its high melting point and density. Tungsten is known for its resistance to laser cutting processes. However, other machining methods, like electrical discharge machining (EDM) or abrasive waterjet cutting, can be more suitable for tungsten materials. These methods allow for precision cutting without causing excessive heat.
Tungsten W-Ni-Cu Series has a very high melting point, around 3,422 degrees Celsius (6,192 degrees Fahrenheit). At normal operating conditions, tungsten heavy alloys do not melt.
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