CAS 7440-33-7 99.99 Tungsten Materials W Ring Excellent Abrasion Resistance
CAS 7440-33-7 99.99 W Ring Excellent Abrasion Resistance
Quick Details
Purity: W ≥99.95%
Dimensions: ring face width is about 4mm, wall thickness is about 1.5mm, inner ring circumference is 52, 54, 56, 58, 60, 62, 64mm
Process: polishing
Advantages:
1. Excellent abrasion resistance
2. High wear resistance
3. High fractural strength
4. High thermal conductivity
5. Small heat expansion co-efficient
Specification
|
Atomic number |
74 |
|
CAS number |
7440-33-7 |
|
Atomic mass |
183.84 [g/mol] |
|
Melting point |
3420 °C |
|
Boiling point |
5555 °C |
|
Density at 20 °C |
19.25 [g/cm3] |
|
Crystal structure |
Body-centered cubic |
|
Coefficient of linear thermal expansion at 20 °C |
4.410-6 [m/(mK)] |
|
Thermal conductivity at 20 °C |
164 [W/(mK)] |
|
Specific heat at 20 °C |
0.13 [J/(gK)] |
|
Electrical conductivity at 20 °C |
18.2106 [S/m] |
|
Specific electrical resistance at 20 °C |
0.055 [(mm2)/m] |
Applications
1. Widely used in semiconductor, chemical vapor deposition (CVD) and physical vapor deposition (PVD) display and optical applications;
2. Applied in producing electrodes, heating elements, heat shields, sintering trays, sintering boats, stacking sheets, base plates, sputtering targets, crucibles in electronic and vacuum applications.
3. can be used as contacts in vehicle motors.
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A: Yes, we could offer the sample, but need pay the cost of sample and freight since our product is high value.
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