TUNGSTEN WIRE
|
Grade of wire |
Mass fraction, max , % |
|||||||
|
Tungsten, min |
ThO2 |
Summ of impurity |
Fe |
Ca |
Mo |
Al |
Si |
|
|
ВА |
99,95 |
----- |
----- |
0,005 |
0,005 |
0,03 |
0,004 |
0,006 |
|
ВЧ |
99,92 |
---- |
0,08 |
----- |
----- |
----- |
----- |
----- |
|
ВРН |
99,90 |
----- |
----- |
0,01 |
0,02 |
0,04 |
0,01 |
0,01 |
|
ВМ |
99,70 |
0,17-0,25 |
0,05 |
----- |
----- |
----- |
----- |
----- |
|
ВТ-7 |
98,96 |
0,70-0,99 |
0,05 |
----- |
----- |
----- |
----- |
----- |
|
ВТ-10 |
98,46 |
1,0-1,49 |
0,05 |
----- |
----- |
----- |
----- |
----- |
|
ВТ-15 |
97,95 |
1,5-2,0 |
0,05 |
----- |
----- |
----- |
----- |
----- |
TUNGSTEN WIRE used for production of incasdescent lamp spirals and other light sources, cathodes and heaters of electronics, wirking with temperature no more than 2100 Celsius degrees under increase mechanical loadings (ВМ Grade); hooks, springs and cathodes of electric and gas-dischage devices (ВТ Grade), and also for beams and other details of devices, which do not need in using tungsten with special additives.
