Wolfraam elektrode materiaal

Added impurity

Impurity quantity

Other impurities

Tungsten

Electric discharged power

Color sign

CeO2

1.80 - 2.20%

<0.20%

The rest

2.7 - 2.8

Grey

Added impurity

Impurity quantity

Other impurities

Tungsten

Electric discharged power

Color sign

La2O3

0.80 - 1.20%

<0.20%

The rest

2.6 - 2.7

Black

La2O3

1.30 - 1.70%

<0.20%

The rest

2.8 - 3.0

Yellow

La2O3

1.80 - 2.20%

<0.20%

The rest

2.8 - 3.2

Sky blue

Added impurity

Impurity quantity

Other impurities

Tungsten

Electric discharged power

Color sign

ZrO2

0.20 - 0.40%

<0.20%

The rest

2.5 - 3.0

Brown

ZrO2

0.70 - 0.90%

<0.20%

The rest

2.5 - 3.0

White

Trade mark

ThO2 Content

Color sign

WT10

0.90 - 1.20

Primary

WT20

1.80 - 2.20

Red

WT30

2.80 - 3.20

Purple

WT40

3.80 - 4.20

Orange Primary

Electrode Name

Added impurity

Impurity quantity

Other impurities

Tungsten

Electric discharged power

Color sign

Pure Tungsten Electrode

--

--

<0.20%

The rest

4.5

Green

Yttrium-Tungsten Electrode

YO2

1.80 - 2.20%

<0.20%

The rest

2.0 - 3.9

Blue

Composite Electrode

ReOx

1.00 - 4.00%

<0.20%

The rest

2.45 - 3.1

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