| |
| Physical Properties | Metric | English | Comments |
|---|
| Density | >= 19.3 g/cc | >= 0.697 lb/in³ |
| a Lattice Constant | 3.1585 Å | 3.1585 Å |
Vapor Pressure  | 2.57311e-018 bar
@Temperature 1527 °C | 1.93e-15 torr
@Temperature 2781 °F |
| | 1.05e-11 bar
@Temperature 2127 °C | 7.90e-9 torr
@Temperature 3861 °F |
| | 5.32e-11 bar
@Temperature 2000 °C | 3.99e-8 torr
@Temperature 3630 °F |
| | 6.67e-9 bar
@Temperature 2500 °C | 0.00000500 torr
@Temperature 4530 °F |
| | 8.67e-8 bar
@Temperature 2727 °C | 0.0000650 torr
@Temperature 4941 °F |
| | 0.00000133 bar
@Temperature 3000 °C | 0.000997 torr
@Temperature 5430 °F |
| | 0.00000624 bar
@Temperature 3227 °C | 0.00468 torr
@Temperature 5841 °F |
| |
| Chemical Properties | Metric | English | Comments |
|---|
| Atomic Mass | 183.92 | 183.92 |
| Atomic Number | 74 | 74 |
| Atomic Volume | 9.53 | 9.53 |
| |
| Mechanical Properties | Metric | English | Comments |
|---|
| Modulus of Elasticity | 407 GPa | 59000 ksi |
| |
| Electrical Properties | Metric | English | Comments |
|---|
| Electrical Resistivity | 0.00000550 ohm-cm
@Temperature 20.0 °C | 0.00000550 ohm-cm
@Temperature 68.0 °F |
| | 0.00000728 ohm-cm
@Temperature 100 °C | 0.00000728 ohm-cm
@Temperature 212 °F |
| | 0.0000180 ohm-cm
@Temperature 500 °C | 0.0000180 ohm-cm
@Temperature 932 °F |
| | 0.00002243 ohm-cm
@Temperature 700 °C | 0.00002243 ohm-cm
@Temperature 1290 °F |
| | 0.0000330 ohm-cm
@Temperature 1000 °C | 0.0000330 ohm-cm
@Temperature 1830 °F |
| | 0.00003465 ohm-cm
@Temperature 1100 °C | 0.00003465 ohm-cm
@Temperature 2010 °F |
| | 0.00004966 ohm-cm
@Temperature 1500 °C | 0.00004966 ohm-cm
@Temperature 2730 °F |
| | 0.00005752 ohm-cm
@Temperature 1800 °C | 0.00005752 ohm-cm
@Temperature 3270 °F |
| | 0.00006961 ohm-cm
@Temperature 2100 °C | 0.00006961 ohm-cm
@Temperature 3810 °F |
| | 0.00100 ohm-cm
@Temperature 3000 °C | 0.00100 ohm-cm
@Temperature 5430 °F |
| |
| Thermal Properties | Metric | English | Comments |
|---|
| CTE, linear | 4.45 µm/m-°C
@Temperature 0.000 - 500 °C | 2.47 µin/in-°F
@Temperature 32.0 - 932 °F |
| | 4.98 µm/m-°C
@Temperature 0.000 - 500 °C | 2.77 µin/in-°F
@Temperature 32.0 - 932 °F |
| Specific Heat Capacity | 0.140 J/g-°C | 0.0335 BTU/lb-°F |
| Thermal Conductivity | 92.9 W/m-K
@Temperature 2000 °C | 644 BTU-in/hr-ft²-°F
@Temperature 3630 °F |
| | 103 W/m-K
@Temperature 1727 °C | 710 BTU-in/hr-ft²-°F
@Temperature 3141 °F |
| | 106 W/m-K
@Temperature 1527 °C | 733 BTU-in/hr-ft²-°F
@Temperature 2781 °F |
| | 109 W/m-K
@Temperature 1327 °C | 754 BTU-in/hr-ft²-°F
@Temperature 2421 °F |
| | 112 W/m-K
@Temperature 1127 °C | 777 BTU-in/hr-ft²-°F
@Temperature 2061 °F |
| | 115 W/m-K
@Temperature 927 °C | 797 BTU-in/hr-ft²-°F
@Temperature 1700 °F |
| | 121 W/m-K
@Temperature 500 °C | 841 BTU-in/hr-ft²-°F
@Temperature 932 °F |
| | 159 W/m-K
@Temperature 100 °C | 1100 BTU-in/hr-ft²-°F
@Temperature 212 °F |
| | 167 W/m-K
@Temperature 20.0 °C | 1160 BTU-in/hr-ft²-°F
@Temperature 68.0 °F |
| Melting Point | 3410 °C | 6170 °F |
| Boiling Point | 5900 °C | 10700 °F |
| |
| Component Elements Properties | Metric | English | Comments |
|---|
| Aluminum, Al | <= 0.0025 % | <= 0.0025 % |
| Carbon, C | <= 0.0050 % | <= 0.0050 % |
| Chromium, Cr | <= 0.0020 % | <= 0.0020 % |
| Copper, Cu | <= 0.0010 % | <= 0.0010 % |
| Iron, Fe | <= 0.0030 % | <= 0.0030 % |
| Molybdenum, Mo | <= 0.0050 % | <= 0.0050 % |
| Nickel, Ni | <= 0.0030 % | <= 0.0030 % |
| Other, each | <= 0.0020 % | <= 0.0020 % |
| Oxygen, O | <= 0.0050 % | <= 0.0050 % |
| Potassium, K | <= 0.0020 % | <= 0.0020 % |
| Silicon, Si | <= 0.0040 % | <= 0.0040 % |
| Sodium, Na | <= 0.0020 % | <= 0.0020 % |
| Tungsten, W | >= 99.95 % | >= 99.95 % |
| |
| Descriptive Properties |
|---|
| Electron Work Function | 4.55 |
| Lattice Structure | Body Centered Cubic |
| RoHS Compliance | 2002/95/EC |
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