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Baoji Refractory Metal Developer Co.,Ltd is one of the leading China thoriated tungsten wires manufacturers and suppliers, and as a professional company we have productive factory, welcome to wholesale thoriated tungsten wires products from us.
THORIATED TUNGSTEN WIRES
WTH7 can be used for making electron tube, the hook of emitting tube, spring, high temperature electrode and negative electrode of light air discharge.
WTH10?WTH15?WTH20?WTH40 can be used for making a negative electrode and
railing electrode of electrode and filament which is against vibration.
² Chemical Composition:
Designation | W% min | Oxide% | Impurity% | Each Impurity |
WTH7 | 98.90 | 0.70~0.99 | <0.10 | <0.01 |
WTH10 | 98.41 | 1.00~1.49 | <0.10 | <0.01 |
WTH15 | 97.91 | 1.50~1.99 | <0.10 | <0.01 |
WTH20 | 97.64 | 1.99~2.50 | <0.10 | <0.01 |
WTH40 | 95.69 | 3.90~4.2 | <0.10 | <0.01 |
² Specification and Tolerance:
Designation | WTH7 | WTH10 | WTH15 | WTH20 | WTH40 |
Condition | R | ||||
Size | F0.15mm~F0.16mm | ||||
Diameter mm | 200mmweight of tolerance% | Diameter of tolerance% | ||
? | ? | ? | ? | |
F 0.2~F 0.35 | ±1.5 | ±2.0 | — | — |
>F 0.35~F 1.6 | — | — | ±1.0 | ±2.0 |
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