Pure Tungsten Rod
Tungsten Rod(Bar)
Application
Tungsten rod(bar) is for the application if emission cathode,high-temperature forming rod,support wire,lead-in wire,printer pin,various delectrodes and heating devices of quartz furnace,etc.
Specification
:mm
Surface Sizes | Swaged | As-Drawn | Cleaned& Straightened | Ground | Length Tolerance | ||||
Diameter Tolerance | Ovality | Diameter Tolerance | Ovality | Diameter Tolerance | Ovality | Diameter Tolerance | Ovality | ||
0.2≤d<0.5 | - | - | ±0.01 | 0.01 | ±0.01 | 0.01 | - | - | L<100±1.0 100≤L<300±1.5 300≤L<500±2.0 500≤L<1000±2.5 1000≤L<2000±5.0 |
0.5≤d<0.8 | - | - | ±0.02 | 0.02 | ±0.02 | 0.02 | ±0.01 | 0.01 | |
0.8≤d<1.0 | - | - | ±0.02 | 0.02 | ±0.02 | 0.02 | ±0.02 | 0.02 | |
1.0≤d<1.8 | - | - | ±0.03 | 0.03 | ±0.03 | 0.03 | ±0.02 | 0.02 | |
1.8≤d<3.5 | - | - | ±0.05 | 0.05 | ±0.05 | 0.05 | ±0.03 | 0.03 | |
3.5≤d<5.0 | ±0.1 | - | - | - | - | - | ±0.05 | 0.05 | |
5.0≤d<9.0 | ±0.2 | - | - | - | - | - | ±0.08 | 0.08 | |
9.0≤d<13.0 | ±0.3 | - | - | - | - | - | ±0.10 | 0.10 | |
13.0≤d<17.0 | ±0.4 | - | - | - | - | - | - | - |
Note:Tungsten rod(bar),at or thicker than 17mm,or thinner than 0.2mm may be as agreed between supplier and purchaser.