■ 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. |
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