Designation

Composition Dioxide

Oxide in%

Impurities Content %

Tungsten

Content%

Color Mark

WL10

LA2O3

0.80~1.20

<0.2

Remainder

tungsten

WL15

LA2O3

1.30~1.70

<0.2

Remainder

tungsten

WL20

LA2O3

1.80~2.20

<0.2

Remainder

tungsten

WT20

ThO2

1.70~2.20

<0.2

Remainder

tungsten

WC20

CeO2

1.80~2.20

<0.2

Remainder

tungsten

WZr3

ZrO2

0.20~0.40

<0.2

Remainder

tungsten

WZr8

ZrO2

0.70~0.90

<0.2

Remainder

tungsten

WP

——

——

<0.2

99.8

tungsten

WY20

Y2O3

1.80~2.20%

<0.2

Remainder

tungsten