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Tungsten Wire Heating Filament

1.Name:tungsten wire heating filament
2.Material:W1.W2
3.Purity:99.95% Min

Product Details

Product Description

tungsten wire heating filament

Chemical composition:

Mark

Tungsten Content

Impurity

Total content

Individual element content

WAL1,WAL2

≥99.95%

≤0.05%

≤0.01%

W1

≥99.95%

≤0.05%

≤0.01%

W2

≥99.92%

≤0.05%

≤0.01%

Attention: Potassium is not as impurity content

Specification:

Diameter

(μm)

Weight

(mg/200mm)

200m weight tolerance(%)

Diameter Tolerance (%)

Grade 0

Grade Ⅰ

Grade Ⅱ

Grade Ⅰ

Grade Ⅱ

8

0.19

±3.0

±4.0

±5.0

----

14

0.59

±2.5

±3.0

±4.0

---

18

0.98

±2.0

±2.5

±3.0

---

40

4.85

±1.5

±2.0

±2.5

80

19.39

±1.0

±1.5

±2.0



300

19.39

±1.0

±1.5

350

±1.5

±2.0

d>500

±1.0

±1.5

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