Trade mark

Added impurity

Impurity quantity %

Impurities Content %

Tungsten

Content%

Color sign

    Standard

WT10

ThO₂

0.90~1.20%

<0.2

Balance

yellow

IS06848

AWS A5.12M

WT20

ThO₂

1.8~2.2%

<0.2

Balance

red

WT30

ThO₂

2.80~3.20%

<0.2

Balance

purple

WT40

ThO₂

3.80~4.20%

<0.2

Balance

orange