Class | Nominal tungsten (weight percent) | Density (g/cc) | Hardness ( HRC )(maximum) |
1 | 90 | 16.85 - 17.25 | 32 |
2 | 92.5 | 17.15- 17.85 | 33 |
3 | 95 | 17.75- 18.35 | 34 |
4 | 97 | 18.25- 18.85 | 35 |
Material |
WCu%
Tungsten Content |
Hardness
HB |
g/
Density at 20ºC |
W/M.K
Thermal conductivity at 25ºC |
(10-6/k)
Coefficient of thermal expansion at 20ºC |
W90Cu10 | 90 | 260 | 17.0 | 180-190 | 6.5 |
W85Cu15 | 85 | 240 | 16.4 | 190-200 | 7.0 |
W80Cu20 | 80 | 220 | 15.6 | 200-210 | 8.3 |
W75Cu25 | 75 | 195 | 14.9 | 220-230 | 9.0 |
W50Cu50 | 50 | 125 | 12.2 | 310-340 | 12.5 |
Tungsten
Content |
Type |
Diameter
(mm) |
Dia.Tolerance
(mm) |
Length
(mm) |
L tolerance
(mm) |
99.95% | Sintering rod | 40-100 | ±3 | 500max | ±5 |
99.95% | Froged rod | 20-80 | ±2 | 800max | ±5 |
99.95% | Ground rod | 2-60 | ±0.1 | 600max | ±1 |
Content of Tungsten | Content of all other elements | Content of each element |
≥99.95% | ≤0.05% | ≤0.01% |